octave: liboctave/oct-inttypes.h annotate

annotate liboctave/oct-inttypes.h @ 8333:9238637cb81c

style fixes

author	John W. Eaton <jwe@octave.org>
date	Tue, 18 Nov 2008 11:14:31 -0500
parents	c374691576f6
children	5abe5ae55465

rev	line source
4902 bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	1 /*
bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	2
7017 a1dbe9d80eee [project @ 2007-10-12 21:27:11 by jwe] jwe parents: 7016 diff changeset	3 Copyright (C) 2004, 2005, 2006, 2007 John W. Eaton
8185 69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	4 Copyright (C) 2008 Jaroslav Hajek <highegg@gmail.com>
4902 bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	5
bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	6 This file is part of Octave.
bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	7
bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	8 Octave is free software; you can redistribute it and/or modify it
bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	9 under the terms of the GNU General Public License as published by the
7016 93c65f2a5668 [project @ 2007-10-12 06:40:56 by jwe] jwe parents: 6764 diff changeset	10 Free Software Foundation; either version 3 of the License, or (at your
93c65f2a5668 [project @ 2007-10-12 06:40:56 by jwe] jwe parents: 6764 diff changeset	11 option) any later version.
4902 bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	12
bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	13 Octave is distributed in the hope that it will be useful, but WITHOUT
bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	16 for more details.
bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	17
bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	18 You should have received a copy of the GNU General Public License
7016 93c65f2a5668 [project @ 2007-10-12 06:40:56 by jwe] jwe parents: 6764 diff changeset	19 along with Octave; see the file COPYING. If not, see
93c65f2a5668 [project @ 2007-10-12 06:40:56 by jwe] jwe parents: 6764 diff changeset	20 <http://www.gnu.org/licenses/>.
4902 bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	21
bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	22 */
bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	23
bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	24 #if !defined (octave_inttypes_h)
bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	25 #define octave_inttypes_h 1
bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	26
6482 7e958a1532c6 [project @ 2007-04-04 02:37:07 by jwe] jwe parents: 6402 diff changeset	27 #include <climits>
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	28 #include <cstdlib>
6482 7e958a1532c6 [project @ 2007-04-04 02:37:07 by jwe] jwe parents: 6402 diff changeset	29
4902 bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	30 #include <limits>
bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	31 #include <iostream>
bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	32
8185 69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	33 #include "lo-math.h"
5828 22e23bee74c8 [project @ 2006-05-23 06:05:14 by jwe] jwe parents: 5533 diff changeset	34 #include "oct-types.h"
4953 7a3a480e8645 [project @ 2004-09-01 21:10:28 by jwe] jwe parents: 4952 diff changeset	35 #include "lo-ieee.h"
4969 52f808101130 [project @ 2004-09-08 02:44:04 by jwe] jwe parents: 4968 diff changeset	36 #include "lo-mappers.h"
4902 bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	37
8185 69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	38 #ifdef OCTAVE_INT_USE_LONG_DOUBLE
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	39 inline long double xround (long double x) { return roundl (x); }
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	40 #endif
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	41
8319 c374691576f6 Fix for MSVC compilation Michael Goffioul <michael.goffioul@gmail.com> parents: 8293 diff changeset	42 // Undefine min/max if needed (this may happen under Windows)
c374691576f6 Fix for MSVC compilation Michael Goffioul <michael.goffioul@gmail.com> parents: 8293 diff changeset	43 #ifdef min
c374691576f6 Fix for MSVC compilation Michael Goffioul <michael.goffioul@gmail.com> parents: 8293 diff changeset	44 #undef min
c374691576f6 Fix for MSVC compilation Michael Goffioul <michael.goffioul@gmail.com> parents: 8293 diff changeset	45 #undef max
c374691576f6 Fix for MSVC compilation Michael Goffioul <michael.goffioul@gmail.com> parents: 8293 diff changeset	46 #endif
c374691576f6 Fix for MSVC compilation Michael Goffioul <michael.goffioul@gmail.com> parents: 8293 diff changeset	47
8333 9238637cb81c style fixes John W. Eaton <jwe@octave.org> parents: 8319 diff changeset	48 // FIXME -- we define this by our own because some compilers, such as
9238637cb81c style fixes John W. Eaton <jwe@octave.org> parents: 8319 diff changeset	49 // MSVC, do not provide std::abs (int64_t) and std::abs (uint64_t). In
9238637cb81c style fixes John W. Eaton <jwe@octave.org> parents: 8319 diff changeset	50 // the future, it should go away in favor of std::abs.
8293 ad5bb02d267a workaround missing std::abs(int64_t) in MSVC Jaroslav Hajek <highegg@gmail.com> parents: 8202 diff changeset	51 template <class T>
ad5bb02d267a workaround missing std::abs(int64_t) in MSVC Jaroslav Hajek <highegg@gmail.com> parents: 8202 diff changeset	52 inline T octave_int_abs (T x) { return x >= 0 ? x : -x; }
ad5bb02d267a workaround missing std::abs(int64_t) in MSVC Jaroslav Hajek <highegg@gmail.com> parents: 8202 diff changeset	53
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	54 // Query for an integer type of certain sizeof, and signedness.
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	55 template<int qsize, bool qsigned>
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	56 struct query_integer_type
4902 bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	57 {
bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	58 public:
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	59 static const bool registered = false;
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	60 typedef void type; // Void shall result in a compile-time error if we
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	61 // attempt to use it in computations.
4902 bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	62 };
bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	63
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	64 #define REGISTER_INT_TYPE(TYPE) \
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	65 template <> \
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	66 class query_integer_type<sizeof (TYPE), std::numeric_limits<TYPE>::is_signed> \
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	67 { \
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	68 public: \
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	69 static const bool registered = true; \
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	70 typedef TYPE type; \
7598 a89b3fa632ee partial specialization for octave_int_fit_to_range John W. Eaton <jwe@octave.org> parents: 7596 diff changeset	71 }
7596 6929e40fc597 compatible handling of NaN -> int conversions John W. Eaton <jwe@octave.org> parents: 7534 diff changeset	72
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	73 // No two registered integers can share sizeof and signedness.
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	74 REGISTER_INT_TYPE (int8_t);
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	75 REGISTER_INT_TYPE (uint8_t);
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	76 REGISTER_INT_TYPE (int16_t);
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	77 REGISTER_INT_TYPE (uint16_t);
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	78 REGISTER_INT_TYPE (int32_t);
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	79 REGISTER_INT_TYPE (uint32_t);
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	80 REGISTER_INT_TYPE (int64_t);
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	81 REGISTER_INT_TYPE (uint64_t);
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	82
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	83 // Selects one of two types, according to a static bool. May be useful in
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	84 // general.
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	85
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	86 template<bool cond, class TT, class FT>
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	87 class if_else_type
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	88 {
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	89 public:
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	90 typedef FT type;
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	91 };
4943 1a499d0c58f5 [project @ 2004-08-31 00:51:31 by jwe] jwe parents: 4920 diff changeset	92
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	93 template<class TT, class FT>
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	94 class if_else_type<true, TT, FT>
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	95 {
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	96 public:
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	97 typedef TT type;
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	98 };
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	99
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	100 // Rationale: Comparators have a single static method, rel(), that returns the
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	101 // result of the binary relation. They also have two static boolean fields:
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	102 // ltval, gtval determine the value of x OP y if x < y, x > y, respectively.
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	103 #define REGISTER_OCTAVE_CMP_OP(NM,OP) \
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	104 class NM \
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	105 { \
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	106 public: \
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	107 static const bool ltval = (0 OP 1), gtval = (1 OP 0); \
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	108 template <class T> \
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	109 static bool op (T x, T y) { return x OP y; } \
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	110 }
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	111
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	112 // We also provide two special relations: ct, yielding always true, and cf,
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	113 // yielding always false.
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	114 #define REGISTER_OCTAVE_CONST_OP(NM,value) \
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	115 class NM \
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	116 { \
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	117 public: \
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	118 static const bool ltval = value, gtval = value; \
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	119 template <class T> \
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	120 static bool op (T, T) { return value; } \
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	121 }
4943 1a499d0c58f5 [project @ 2004-08-31 00:51:31 by jwe] jwe parents: 4920 diff changeset	122
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	123 // Handles non-homogeneous integer comparisons. Avoids doing useless tests.
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	124 class octave_int_cmp_op
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	125 {
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	126 // This determines a suitable promotion type for T1 when meeting T2 in a
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	127 // binary relation. If promotion to int or T2 is safe, it is used. Otherwise,
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	128 // the signedness of T1 is preserved and it is widened if T2 is wider.
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	129 // Notice that if this is applied to both types, they must end up with equal
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	130 // size.
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	131 template <class T1, class T2>
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	132 class prom
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	133 {
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	134 // Promote to int?
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	135 static const bool pint = (sizeof (T1) < sizeof (int)
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	136 && sizeof (T2) < sizeof (int));
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	137 static const bool t1sig = std::numeric_limits<T1>::is_signed;
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	138 static const bool t2sig = std::numeric_limits<T2>::is_signed;
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	139 static const bool psig =
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	140 (pint \|\| (sizeof (T2) > sizeof (T1) && t2sig) \|\| t1sig);
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	141 static const int psize =
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	142 (pint ? sizeof (int) : (sizeof (T2) > sizeof (T1)
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	143 ? sizeof (T2) : sizeof (T1)));
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	144 public:
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	145 typedef typename query_integer_type<psize, psig>::type type;
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	146 };
4943 1a499d0c58f5 [project @ 2004-08-31 00:51:31 by jwe] jwe parents: 4920 diff changeset	147
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	148 // Implements comparisons between two types of equal size but
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	149 // possibly different signedness.
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	150 template<class xop, int size>
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	151 class uiop
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	152 {
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	153 typedef typename query_integer_type<size, false>::type utype;
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	154 typedef typename query_integer_type<size, true>::type stype;
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	155 public:
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	156 static bool op (utype x, utype y)
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	157 { return xop::op (x, y); }
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	158 static bool op (stype x, stype y)
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	159 { return xop::op (x, y); }
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	160 static bool op (stype x, utype y)
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	161 { return (x < 0) ? xop::ltval : xop::op (static_cast<utype> (x), y); }
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	162 static bool op (utype x, stype y)
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	163 { return (y < 0) ? xop::gtval : xop::op (x, static_cast<utype> (y)); }
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	164 };
4943 1a499d0c58f5 [project @ 2004-08-31 00:51:31 by jwe] jwe parents: 4920 diff changeset	165
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	166 public:
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	167 REGISTER_OCTAVE_CMP_OP (lt, <);
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	168 REGISTER_OCTAVE_CMP_OP (le, <=);
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	169 REGISTER_OCTAVE_CMP_OP (gt, >);
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	170 REGISTER_OCTAVE_CMP_OP (ge, >=);
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	171 REGISTER_OCTAVE_CMP_OP (eq, ==);
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	172 REGISTER_OCTAVE_CMP_OP (ne, !=);
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	173 REGISTER_OCTAVE_CONST_OP (ct, true);
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	174 REGISTER_OCTAVE_CONST_OP (cf, false);
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	175
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	176 // Universal comparison operation.
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	177 template<class xop, class T1, class T2>
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	178 static bool
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	179 op (T1 x, T2 y)
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	180 {
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	181 typedef typename prom<T1, T2>::type PT1;
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	182 typedef typename prom<T2, T1>::type PT2;
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	183 return uiop<xop, sizeof (PT1)>::op (static_cast<PT1> (x),
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	184 static_cast<PT2> (y));
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	185 }
8185 69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	186
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	187 public:
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	188
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	189 // Mixed comparisons
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	190 template <class xop, class T>
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	191 static bool
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	192 mop (T x, double y)
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	193 { return xop::op (static_cast<double> (x), y); }
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	194
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	195 template <class xop, class T>
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	196 static bool
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	197 mop (double x, T y)
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	198 { return xop::op (x, static_cast<double> (y)); }
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	199
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	200 // Typecasting to doubles won't work properly for 64-bit integers - they lose precision.
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	201 // If we have long doubles, use them...
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	202 #ifdef OCTAVE_INT_USE_LONG_DOUBLE
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	203 #define DEFINE_LONG_DOUBLE_CMP_OP(T1, T2) \
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	204 template <class xop> \
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	205 static bool \
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	206 mop (T1 x, T2 y) \
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	207 { \
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	208 return xop::op (static_cast<long double> (x), \
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	209 static_cast<long double> (y)); \
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	210 }
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	211 DEFINE_LONG_DOUBLE_CMP_OP(double, uint64_t)
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	212 DEFINE_LONG_DOUBLE_CMP_OP(double, int64_t)
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	213 DEFINE_LONG_DOUBLE_CMP_OP(int64_t, double)
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	214 DEFINE_LONG_DOUBLE_CMP_OP(uint64_t, double)
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	215 #undef DEFINE_LONG_DOUBLE_CMP_OP
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	216
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	217 #else
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	218 // ... otherwise, use external handlers
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	219 template <class xop> static OCTAVE_API bool mop (uint64_t, double);
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	220 template <class xop> static OCTAVE_API bool mop (int64_t, double);
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	221 template <class xop> static OCTAVE_API bool mop (double, uint64_t);
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	222 template <class xop> static OCTAVE_API bool mop (double, int64_t);
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	223 #endif
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	224
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	225 };
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	226
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	227 // Base integer class. No data, just conversion methods and exception flags.
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	228 template <class T>
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	229 class octave_int_base
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	230 {
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	231 protected:
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	232
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	233 static T min_val () { return std::numeric_limits<T>:: min (); }
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	234 static T max_val () { return std::numeric_limits<T>:: max (); }
4943 1a499d0c58f5 [project @ 2004-08-31 00:51:31 by jwe] jwe parents: 4920 diff changeset	235
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	236 public:
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	237
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	238 // Convert integer value.
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	239 template <class S>
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	240 static T
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	241 truncate_int (const S& value)
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	242 {
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	243 // An exhaustive test whether the max and/or min check can be omitted.
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	244 static const bool t_is_signed = std::numeric_limits<T>::is_signed;
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	245 static const bool s_is_signed = std::numeric_limits<S>::is_signed;
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	246 static const int t_size = sizeof (T), s_size = sizeof (S);
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	247 static const bool omit_chk_min =
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	248 (! s_is_signed \|\| (t_is_signed && t_size >= s_size));
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	249 static const bool omit_chk_max =
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	250 (t_size > s_size \|\| (t_size == s_size
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	251 && (! t_is_signed \|\| s_is_signed)));
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	252 // If the check can be omitted, substitute constant false relation.
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	253 typedef octave_int_cmp_op::cf cf;
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	254 typedef octave_int_cmp_op::lt lt;
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	255 typedef octave_int_cmp_op::gt gt;
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	256 typedef typename if_else_type<omit_chk_min, cf, lt>::type chk_min;
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	257 typedef typename if_else_type<omit_chk_max, cf, gt>::type chk_max;
4943 1a499d0c58f5 [project @ 2004-08-31 00:51:31 by jwe] jwe parents: 4920 diff changeset	258
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	259 // Efficiency of the following depends on inlining and dead code
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	260 // elimination, but that should be a piece of cake for most compilers.
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	261 if (chk_min::op (value, static_cast<S> (min_val ())))
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	262 {
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	263 ftrunc = true;
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	264 return min_val ();
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	265 }
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	266 else if (chk_max::op (value, static_cast<S> (max_val ())))
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	267 {
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	268 ftrunc = true;
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	269 return max_val ();
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	270 }
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	271 else
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	272 return static_cast<T> (value);
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	273 }
4943 1a499d0c58f5 [project @ 2004-08-31 00:51:31 by jwe] jwe parents: 4920 diff changeset	274
8185 69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	275 private:
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	276
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	277 // Computes a real-valued threshold for a max/min check.
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	278 template <class S>
8185 69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	279 static S
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	280 compute_threshold (S val, T orig_val)
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	281 {
8193 5fd507839b76 remove the int->real conversion code vulnerability to compiler optimization Jaroslav Hajek <highegg@gmail.com> parents: 8191 diff changeset	282 val = xround (val); // Fool optimizations (maybe redundant)
5fd507839b76 remove the int->real conversion code vulnerability to compiler optimization Jaroslav Hajek <highegg@gmail.com> parents: 8191 diff changeset	283 // If val is even, but orig_val is odd, we're one unit off.
5fd507839b76 remove the int->real conversion code vulnerability to compiler optimization Jaroslav Hajek <highegg@gmail.com> parents: 8191 diff changeset	284 if (orig_val % 2 && val / 2 == xround (val / 2))
8333 9238637cb81c style fixes John W. Eaton <jwe@octave.org> parents: 8319 diff changeset	285 // FIXME -- is this always correct?
8193 5fd507839b76 remove the int->real conversion code vulnerability to compiler optimization Jaroslav Hajek <highegg@gmail.com> parents: 8191 diff changeset	286 val *= (static_cast<S>(1) - (std::numeric_limits<S>::epsilon () / 2));
5fd507839b76 remove the int->real conversion code vulnerability to compiler optimization Jaroslav Hajek <highegg@gmail.com> parents: 8191 diff changeset	287 return val;
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	288 }
8185 69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	289
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	290 public:
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	291 // Convert a real number (check NaN and non-int).
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	292 template <class S>
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	293 static T
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	294 convert_real (const S& value)
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	295 {
8185 69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	296 // Compute proper thresholds.
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	297 static const S thmin = compute_threshold (static_cast<S> (min_val ()), min_val ());
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	298 static const S thmax = compute_threshold (static_cast<S> (max_val ()), max_val ());
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	299 if (lo_ieee_isnan (value))
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	300 {
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	301 fnan = true;
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	302 return static_cast<T> (0);
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	303 }
8193 5fd507839b76 remove the int->real conversion code vulnerability to compiler optimization Jaroslav Hajek <highegg@gmail.com> parents: 8191 diff changeset	304 else if (value < thmin)
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	305 {
8193 5fd507839b76 remove the int->real conversion code vulnerability to compiler optimization Jaroslav Hajek <highegg@gmail.com> parents: 8191 diff changeset	306 ftrunc = true;
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	307 return min_val ();
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	308 }
8193 5fd507839b76 remove the int->real conversion code vulnerability to compiler optimization Jaroslav Hajek <highegg@gmail.com> parents: 8191 diff changeset	309 else if (value > thmax)
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	310 {
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	311 ftrunc = true;
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	312 return max_val ();
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	313 }
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	314 else
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	315 {
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	316 S rvalue = xround (value);
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	317 if (rvalue != value) fnon_int = true;
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	318 return static_cast<T> (rvalue);
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	319 }
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	320 }
4902 bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	321
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	322 // Exception flags rationale:
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	323 // There is little reason to distinguish math and conversion exceptions at
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	324 // octave_int level. Doing this would require special constructors for
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	325 // intermediate int results in math computations.
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	326 //
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	327 // Boolean flags are used rather than a single flag, because raising a boolean
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	328 // flag is faster than masking an int flag (single mov versus mov, or, mov).
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	329 // Also, it is atomic, and thus thread-safe (but there is one flag for all
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	330 // threads).
4902 bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	331
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	332 static bool get_trunc_flag () { return ftrunc; }
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	333 static bool get_nan_flag () { return fnan; }
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	334 static bool get_non_int_flag () { return fnon_int; }
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	335 static void clear_conv_flags ()
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	336 {
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	337 ftrunc = false;
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	338 fnan = false;
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	339 fnon_int = false;
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	340 }
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	341 // For compatibility.
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	342 static bool get_math_trunc_flag () { return ftrunc \|\| fnan; }
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	343 static void clear_conv_flag () { clear_conv_flags (); }
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	344
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	345 protected:
7521 6f10bbb2854a avoid some GCC warnings for unsigned comparisons John W. Eaton <jwe@octave.org> parents: 7503 diff changeset	346
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	347 // Conversion flags.
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	348 static bool ftrunc;
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	349 static bool fnon_int;
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	350 static bool fnan;
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	351 };
7521 6f10bbb2854a avoid some GCC warnings for unsigned comparisons John W. Eaton <jwe@octave.org> parents: 7503 diff changeset	352
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	353 template<class T> bool octave_int_base<T>::ftrunc = false;
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	354 template<class T> bool octave_int_base<T>::fnon_int = false;
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	355 template<class T> bool octave_int_base<T>::fnan = false;
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	356
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	357 // Saturated (homogeneous) integer arithmetics. The signed and unsigned
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	358 // implementations are significantly different, so we implement another layer
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	359 // and completely specialize. Arithmetics inherits from octave_int_base so that
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	360 // it can use its exceptions and truncation functions.
7521 6f10bbb2854a avoid some GCC warnings for unsigned comparisons John W. Eaton <jwe@octave.org> parents: 7503 diff changeset	361
6f10bbb2854a avoid some GCC warnings for unsigned comparisons John W. Eaton <jwe@octave.org> parents: 7503 diff changeset	362 template <class T, bool is_signed>
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	363 class octave_int_arith_base
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	364 { };
7521 6f10bbb2854a avoid some GCC warnings for unsigned comparisons John W. Eaton <jwe@octave.org> parents: 7503 diff changeset	365
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	366 // Unsigned arithmetics. C++ standard requires it to be modular, so the
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	367 // overflows can be handled efficiently and reliably.
7521 6f10bbb2854a avoid some GCC warnings for unsigned comparisons John W. Eaton <jwe@octave.org> parents: 7503 diff changeset	368 template <class T>
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	369 class octave_int_arith_base<T, false> : octave_int_base<T>
7521 6f10bbb2854a avoid some GCC warnings for unsigned comparisons John W. Eaton <jwe@octave.org> parents: 7503 diff changeset	370 {
6f10bbb2854a avoid some GCC warnings for unsigned comparisons John W. Eaton <jwe@octave.org> parents: 7503 diff changeset	371 public:
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	372
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	373 static T
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	374 abs (T x) { return x; }
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	375
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	376 static T
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	377 signum (T x) { return x ? static_cast<T> (1) : static_cast<T> (0); }
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	378
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	379 // Shifts do not overflow.
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	380 static T
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	381 rshift (T x, int n) { return x >> n; }
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	382
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	383 static T
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	384 lshift (T x, int n) { return x << n; }
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	385
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	386 static T
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	387 minus (T x)
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	388 {
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	389 if (x != 0) octave_int_base<T>::ftrunc = true;
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	390 return static_cast<T> (0);
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	391 }
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	392
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	393 // the overflow behaviour for unsigned integers is guaranteed by C/C++,
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	394 // so the following should always work.
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	395 static T
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	396 add (T x, T y)
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	397 {
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	398 T u = x + y;
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	399 if (u < x)
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	400 {
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	401 u = octave_int_base<T>::max_val ();
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	402 octave_int_base<T>::ftrunc = true;
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	403 }
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	404 return u;
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	405 }
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	406
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	407 static T
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	408 sub (T x, T y)
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	409 {
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	410 T u = x - y;
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	411 if (u > x)
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	412 {
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	413 u = 0;
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	414 octave_int_base<T>::ftrunc = true;
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	415 }
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	416 return u;
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	417 }
7521 6f10bbb2854a avoid some GCC warnings for unsigned comparisons John W. Eaton <jwe@octave.org> parents: 7503 diff changeset	418
8185 69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	419 // Multiplication is done using promotion to wider integer type. If there is
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	420 // no suitable promotion type, this operation MUST be specialized.
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	421 static T
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	422 mul (T x, T y)
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	423 {
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	424 // Promotion type for multiplication (if exists).
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	425 typedef typename query_integer_type<2*sizeof (T), false>::type mptype;
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	426 return truncate_int (static_cast<mptype> (x)
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	427 * static_cast<mptype> (y));
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	428 }
7521 6f10bbb2854a avoid some GCC warnings for unsigned comparisons John W. Eaton <jwe@octave.org> parents: 7503 diff changeset	429
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	430 // Division with rounding to nearest. Note that / and % are probably
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	431 // computed by a single instruction.
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	432 static T
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	433 div (T x, T y)
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	434 {
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	435 if (y != 0)
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	436 {
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	437 T z = x / y, w = x % y;
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	438 if (w >= y-w) z += 1;
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	439 return z;
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	440 }
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	441 else
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	442 {
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	443 octave_int_base<T>::ftrunc = true;
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	444 return x ? octave_int_base<T>::max_val () : 0;
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	445 }
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	446 }
7521 6f10bbb2854a avoid some GCC warnings for unsigned comparisons John W. Eaton <jwe@octave.org> parents: 7503 diff changeset	447 };
6f10bbb2854a avoid some GCC warnings for unsigned comparisons John W. Eaton <jwe@octave.org> parents: 7503 diff changeset	448
8185 69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	449 #ifdef OCTAVE_INT_USE_LONG_DOUBLE
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	450 // Handle 64-bit multiply using long double
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	451 template <>
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	452 inline uint64_t
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	453 octave_int_arith_base<uint64_t, false>:: mul (uint64_t x, uint64_t y)
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	454 {
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	455 long double p = static_cast<long double> (x) * static_cast<long double> (y);
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	456 if (p > static_cast<long double> (octave_int_base<uint64_t>::max_val ()))
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	457 {
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	458 octave_int_base<uint64_t>::ftrunc = true;
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	459 return octave_int_base<uint64_t>::max_val ();
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	460 }
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	461 else
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	462 return static_cast<uint64_t> (p);
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	463 }
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	464 #else
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	465 // Special handler for 64-bit integer multiply.
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	466 template <>
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	467 OCTAVE_API uint64_t
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	468 octave_int_arith_base<uint64_t, false>::mul (uint64_t, uint64_t);
8185 69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	469 #endif
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	470
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	471 // Signed integer arithmetics.
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	472 // Rationale: If HAVE_FAST_INT_OPS is defined, the following conditions
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	473 // should hold:
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	474 // 1. Signed numbers are represented by twos complement
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	475 // (see <http://en.wikipedia.org/wiki/Two%27s_complement>)
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	476 // 2. static_cast to unsigned int counterpart works like interpreting
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	477 // the signed bit pattern as unsigned (and is thus zero-cost).
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	478 // 3. Signed addition and subtraction yield the same bit results as unsigned.
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	479 // (We use casts to prevent optimization interference, so there is no
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	480 // need for things like -ftrapv).
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	481 // 4. Bit operations on signed integers work like on unsigned integers,
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	482 // except for the shifts. Shifts are arithmetic.
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	483 //
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	484 // The above conditions are satisfied by most modern platforms. If
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	485 // HAVE_FAST_INT_OPS is defined, bit tricks and wraparound arithmetics are used
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	486 // to avoid conditional jumps as much as possible, thus being friendly to modern
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	487 // pipeline processor architectures.
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	488 // Otherwise, we fall back to a bullet-proof code that only uses assumptions
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	489 // guaranteed by the standard.
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	490
7521 6f10bbb2854a avoid some GCC warnings for unsigned comparisons John W. Eaton <jwe@octave.org> parents: 7503 diff changeset	491 template <class T>
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	492 class octave_int_arith_base<T, true> : octave_int_base<T>
7521 6f10bbb2854a avoid some GCC warnings for unsigned comparisons John W. Eaton <jwe@octave.org> parents: 7503 diff changeset	493 {
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	494 // The corresponding unsigned type.
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	495 typedef typename query_integer_type<sizeof (T), false>::type UT;
7521 6f10bbb2854a avoid some GCC warnings for unsigned comparisons John W. Eaton <jwe@octave.org> parents: 7503 diff changeset	496 public:
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	497
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	498 // Returns 1 for negative number, 0 otherwise.
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	499 static T
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	500 signbit (T x)
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	501 {
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	502 #ifdef HAVE_FAST_INT_OPS
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	503 return static_cast<UT> (x) >> std::numeric_limits<T>::digits;
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	504 #else
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	505 return (x < 0) ? 1 : 0;
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	506 #endif
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	507 }
7521 6f10bbb2854a avoid some GCC warnings for unsigned comparisons John W. Eaton <jwe@octave.org> parents: 7503 diff changeset	508
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	509 static T
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	510 abs (T x)
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	511 {
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	512 #ifdef HAVE_FAST_INT_OPS
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	513 // This is close to how GCC does std::abs, but we can't just use std::abs,
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	514 // because its behaviour for INT_MIN is undefined and the compiler could
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	515 // discard the following test.
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	516 T m = x >> std::numeric_limits<T>::digits;
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	517 T y = (x ^ m) - m;
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	518 if (y < 0)
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	519 {
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	520 y = octave_int_base<T>::max_val ();
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	521 octave_int_base<T>::ftrunc = true;
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	522 }
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	523 return y;
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	524 #else
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	525 // -INT_MAX is safe because C++ actually allows only three implementations
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	526 // of integers: sign & magnitude, ones complement and twos complement.
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	527 // The first test will, with modest optimizations, evaluate at compile
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	528 // time, and maybe eliminate the branch completely.
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	529 T y;
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	530 if (octave_int_base<T>::min_val () < -octave_int_base<T>::max_val ()
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	531 && x == octave_int_base<T>::min_val ())
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	532 {
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	533 y = octave_int_base<T>::max_val ();
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	534 octave_int_base<T>::ftrunc = true;
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	535 }
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	536 else
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	537 y = (x < 0) ? -x : x;
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	538 return y;
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	539 #endif
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	540 }
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	541
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	542 static T
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	543 signum (T x)
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	544 {
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	545 // With modest optimizations, this will compile without a jump.
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	546 return ((x > 0) ? 1 : 0) - signbit (x);
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	547 }
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	548
8333 9238637cb81c style fixes John W. Eaton <jwe@octave.org> parents: 8319 diff changeset	549 // FIXME -- we do not have an authority what signed shifts should
9238637cb81c style fixes John W. Eaton <jwe@octave.org> parents: 8319 diff changeset	550 // exactly do, so we define them the easy way. Note that Matlab does
9238637cb81c style fixes John W. Eaton <jwe@octave.org> parents: 8319 diff changeset	551 // not define signed shifts.
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	552
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	553 static T
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	554 rshift (T x, int n) { return x >> n; }
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	555
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	556 static T
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	557 lshift (T x, int n) { return x << n; }
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	558
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	559 // Minus has problems similar to abs.
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	560 static T
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	561 minus (T x)
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	562 {
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	563 #ifdef HAVE_FAST_INT_OPS
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	564 T y = -x;
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	565 if (y == octave_int_base<T>::min_val ())
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	566 {
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	567 --y;
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	568 octave_int_base<T>::ftrunc = false;
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	569 }
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	570 return y;
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	571 #else
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	572 T y;
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	573 if (octave_int_base<T>::min_val () < -octave_int_base<T>::max_val ()
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	574 && x == octave_int_base<T>::min_val ())
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	575 {
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	576 y = octave_int_base<T>::max_val ();
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	577 octave_int_base<T>::ftrunc = true;
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	578 }
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	579 else
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	580 y = -x;
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	581 return y;
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	582 #endif
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	583 }
7521 6f10bbb2854a avoid some GCC warnings for unsigned comparisons John W. Eaton <jwe@octave.org> parents: 7503 diff changeset	584
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	585 static T
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	586 add (T x, T y)
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	587 {
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	588 #ifdef HAVE_FAST_INT_OPS
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	589 // The typecasts do nothing, but they are here to prevent an optimizing
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	590 // compiler from interfering. Also, the signed operations on small types
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	591 // actually return int.
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	592 T u = static_cast<UT> (x) + static_cast<UT> (y);
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	593 T ux = u ^ x, uy = u ^ y;
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	594 if ((ux & uy) < 0)
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	595 {
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	596 u = octave_int_base<T>::max_val () + signbit (~u);
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	597 octave_int_base<T>::ftrunc = true;
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	598 }
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	599 return u;
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	600 #else
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	601 // We shall carefully avoid anything that may overflow.
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	602 T u;
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	603 if (y < 0)
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	604 {
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	605 if (x < octave_int_base<T>::min_val () - y)
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	606 {
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	607 u = octave_int_base<T>::min_val ();
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	608 octave_int_base<T>::ftrunc = true;
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	609 }
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	610 else
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	611 u = x + y;
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	612 }
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	613 else
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	614 {
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	615 if (x > octave_int_base<T>::max_val () - y)
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	616 {
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	617 u = octave_int_base<T>::max_val ();
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	618 octave_int_base<T>::ftrunc = true;
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	619 }
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	620 else
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	621 u = x + y;
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	622 }
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	623
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	624 return u;
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	625 #endif
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	626 }
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	627
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	628 // This is very similar to addition.
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	629 static T
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	630 sub (T x, T y)
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	631 {
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	632 #ifdef HAVE_FAST_INT_OPS
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	633 // The typecasts do nothing, but they are here to prevent an optimizing
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	634 // compiler from interfering. Also, the signed operations on small types
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	635 // actually return int.
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	636 T u = static_cast<UT> (x) - static_cast<UT> (y);
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	637 T ux = u ^ x, uy = u ^ ~y;
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	638 if ((ux & uy) < 0)
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	639 {
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	640 u = octave_int_base<T>::max_val () + signbit (~u);
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	641 octave_int_base<T>::ftrunc = true;
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	642 }
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	643 return u;
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	644 #else
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	645 // We shall carefully avoid anything that may overflow.
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	646 T u;
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	647 if (y < 0)
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	648 {
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	649 if (x > octave_int_base<T>::max_val () + y)
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	650 {
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	651 u = octave_int_base<T>::max_val ();
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	652 octave_int_base<T>::ftrunc = true;
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	653 }
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	654 else
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	655 u = x - y;
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	656 }
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	657 else
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	658 {
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	659 if (x < octave_int_base<T>::min_val () + y)
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	660 {
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	661 u = octave_int_base<T>::min_val ();
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	662 octave_int_base<T>::ftrunc = true;
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	663 }
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	664 else
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	665 u = x - y;
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	666 }
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	667
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	668 return u;
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	669 #endif
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	670 }
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	671
8185 69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	672 // Multiplication is done using promotion to wider integer type. If there is
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	673 // no suitable promotion type, this operation MUST be specialized.
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	674 static T
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	675 mul (T x, T y)
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	676 {
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	677 // Promotion type for multiplication (if exists).
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	678 typedef typename query_integer_type<2*sizeof (T), true>::type mptype;
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	679 return truncate_int (static_cast<mptype> (x)
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	680 * static_cast<mptype> (y));
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	681 }
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	682
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	683 // Division.
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	684 static T
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	685 div (T x, T y)
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	686 {
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	687 T z;
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	688 if (y == 0)
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	689 {
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	690 octave_int_base<T>::ftrunc = true;
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	691 if (x < 0)
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	692 z = octave_int_base<T>::min_val ();
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	693 else if (x != 0)
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	694 z = octave_int_base<T>::max_val ();
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	695 else
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	696 z = 0;
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	697 }
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	698 else if (y < 0)
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	699 {
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	700 // This is a special case that overflows as well.
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	701 if (y == -1 && x == octave_int_base<T>::min_val ())
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	702 {
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	703 octave_int_base<T>::ftrunc = true;
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	704 z = octave_int_base<T>::max_val ();
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	705 }
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	706 else
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	707 {
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	708 z = x / y;
8293 ad5bb02d267a workaround missing std::abs(int64_t) in MSVC Jaroslav Hajek <highegg@gmail.com> parents: 8202 diff changeset	709 T w = -octave_int_abs (x % y); // Can't overflow, but std::abs (x) can!
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	710 if (w <= y - w)
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	711 z -= 1 - (signbit (x) << 1);
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	712 }
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	713 }
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	714 else
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	715 {
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	716 z = x / y;
8333 9238637cb81c style fixes John W. Eaton <jwe@octave.org> parents: 8319 diff changeset	717 // FIXME -- this is a workaround due to MSVC's absence of
9238637cb81c style fixes John W. Eaton <jwe@octave.org> parents: 8319 diff changeset	718 // std::abs (int64_t). The call to octave_int_abs can't
9238637cb81c style fixes John W. Eaton <jwe@octave.org> parents: 8319 diff changeset	719 // overflow, but std::abs (x) can!
9238637cb81c style fixes John W. Eaton <jwe@octave.org> parents: 8319 diff changeset	720 T w = octave_int_abs (x % y);
9238637cb81c style fixes John W. Eaton <jwe@octave.org> parents: 8319 diff changeset	721
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	722 if (w >= y - w)
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	723 z += 1 - (signbit (x) << 1);
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	724 }
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	725 return z;
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	726 }
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	727
7521 6f10bbb2854a avoid some GCC warnings for unsigned comparisons John W. Eaton <jwe@octave.org> parents: 7503 diff changeset	728 };
6f10bbb2854a avoid some GCC warnings for unsigned comparisons John W. Eaton <jwe@octave.org> parents: 7503 diff changeset	729
8185 69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	730 #ifdef OCTAVE_INT_USE_LONG_DOUBLE
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	731 // Handle 64-bit multiply using long double
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	732 template <>
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	733 inline int64_t
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	734 octave_int_arith_base<int64_t, true>:: mul (int64_t x, int64_t y)
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	735 {
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	736 long double p = static_cast<long double> (x) * static_cast<long double> (y);
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	737 // NOTE: We could maybe do it with a single branch if HAVE_FAST_INT_OPS, but it
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	738 // would require one more runtime conversion, so the question is whether it would
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	739 // really be faster.
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	740 if (p > static_cast<long double> (octave_int_base<int64_t>::max_val ()))
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	741 {
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	742 octave_int_base<int64_t>::ftrunc = true;
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	743 return octave_int_base<int64_t>::max_val ();
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	744 }
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	745 else if (p < static_cast<long double> (octave_int_base<int64_t>::min_val ()))
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	746 {
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	747 octave_int_base<int64_t>::ftrunc = true;
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	748 return octave_int_base<int64_t>::min_val ();
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	749 }
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	750 else
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	751 return static_cast<int64_t> (p);
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	752 }
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	753 #else
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	754 // Special handler for 64-bit integer multiply.
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	755 template <>
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	756 OCTAVE_API int64_t
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	757 octave_int_arith_base<int64_t, true>::mul (int64_t, int64_t);
8185 69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	758 #endif
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	759
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	760 // This class simply selects the proper arithmetics.
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	761 template<class T>
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	762 class octave_int_arith
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	763 : public octave_int_arith_base<T, std::numeric_limits<T>::is_signed>
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	764 {};
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	765
4902 bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	766 template <class T>
bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	767 class
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	768 octave_int : public octave_int_base<T>
4902 bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	769 {
bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	770 public:
4943 1a499d0c58f5 [project @ 2004-08-31 00:51:31 by jwe] jwe parents: 4920 diff changeset	771 typedef T val_type;
1a499d0c58f5 [project @ 2004-08-31 00:51:31 by jwe] jwe parents: 4920 diff changeset	772
4902 bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	773 octave_int (void) : ival () { }
bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	774
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	775 octave_int (T i) : ival (i) { }
4902 bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	776
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	777 octave_int (double d) : ival (octave_int_base<T>::convert_real (d)) { }
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	778
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	779 octave_int (float d) : ival (octave_int_base<T>::convert_real (d)) { }
6402 fe9817a6ee98 [project @ 2007-03-13 02:25:31 by jwe] jwe parents: 6108 diff changeset	780
8185 69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	781 #ifdef OCTAVE_INT_USE_LONG_DOUBLE
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	782 octave_int (long double d) : ival (octave_int_base<T>::convert_real (d)) { }
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	783 #endif
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	784
4902 bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	785 octave_int (bool b) : ival (b) { }
bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	786
bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	787 template <class U>
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	788 octave_int (const U& i) : ival(octave_int_base<T>::truncate_int (i)) { }
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	789
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	790 template <class U>
4902 bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	791 octave_int (const octave_int<U>& i)
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	792 : ival (octave_int_base<T>::truncate_int (i.value ())) { }
4902 bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	793
bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	794 octave_int (const octave_int<T>& i) : ival (i.ival) { }
bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	795
bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	796 octave_int& operator = (const octave_int<T>& i)
bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	797 {
bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	798 ival = i.ival;
bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	799 return *this;
bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	800 }
bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	801
bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	802 T value (void) const { return ival; }
bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	803
4949 f6b63ff1119b [project @ 2004-08-31 19:17:44 by jwe] jwe parents: 4943 diff changeset	804 const unsigned char * iptr (void) const
f6b63ff1119b [project @ 2004-08-31 19:17:44 by jwe] jwe parents: 4943 diff changeset	805 { return reinterpret_cast<const unsigned char *> (& ival); }
f6b63ff1119b [project @ 2004-08-31 19:17:44 by jwe] jwe parents: 4943 diff changeset	806
4902 bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	807 bool operator ! (void) const { return ! ival; }
bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	808
7198 4555c116b420 [project @ 2007-11-27 03:06:10 by jwe] jwe parents: 7177 diff changeset	809 bool bool_value (void) const { return static_cast<bool> (value ()); }
4555c116b420 [project @ 2007-11-27 03:06:10 by jwe] jwe parents: 7177 diff changeset	810
4555c116b420 [project @ 2007-11-27 03:06:10 by jwe] jwe parents: 7177 diff changeset	811 char char_value (void) const { return static_cast<char> (value ()); }
4555c116b420 [project @ 2007-11-27 03:06:10 by jwe] jwe parents: 7177 diff changeset	812
4555c116b420 [project @ 2007-11-27 03:06:10 by jwe] jwe parents: 7177 diff changeset	813 double double_value (void) const { return static_cast<double> (value ()); }
4555c116b420 [project @ 2007-11-27 03:06:10 by jwe] jwe parents: 7177 diff changeset	814
4555c116b420 [project @ 2007-11-27 03:06:10 by jwe] jwe parents: 7177 diff changeset	815 float float_value (void) const { return static_cast<float> (value ()); }
4555c116b420 [project @ 2007-11-27 03:06:10 by jwe] jwe parents: 7177 diff changeset	816
7177 57d2546ad8d5 [project @ 2007-11-14 22:21:35 by jwe] jwe parents: 7017 diff changeset	817 operator T (void) const { return value (); }
57d2546ad8d5 [project @ 2007-11-14 22:21:35 by jwe] jwe parents: 7017 diff changeset	818
7198 4555c116b420 [project @ 2007-11-27 03:06:10 by jwe] jwe parents: 7177 diff changeset	819 // char and bool operators intentionally omitted.
5533 667ad2becb63 [project @ 2005-11-10 21:40:48 by jwe] jwe parents: 5420 diff changeset	820
7198 4555c116b420 [project @ 2007-11-27 03:06:10 by jwe] jwe parents: 7177 diff changeset	821 operator double (void) const { return double_value (); }
4902 bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	822
7198 4555c116b420 [project @ 2007-11-27 03:06:10 by jwe] jwe parents: 7177 diff changeset	823 operator float (void) const { return float_value (); }
5030 160365410ad4 [project @ 2004-09-24 03:22:23 by jwe] jwe parents: 5029 diff changeset	824
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	825 octave_int<T>
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	826 operator + () const
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	827 { return *this; }
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	828
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	829 // unary operators & mappers
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	830 #define OCTAVE_INT_UN_OP(OPNAME,NAME) \
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	831 inline octave_int<T> \
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	832 OPNAME () const \
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	833 { return octave_int_arith<T>::NAME (ival); }
4902 bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	834
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	835 OCTAVE_INT_UN_OP(operator -, minus)
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	836 OCTAVE_INT_UN_OP(abs, abs)
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	837 OCTAVE_INT_UN_OP(signum, signum)
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	838
8185 69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	839 #undef OCTAVE_INT_UN_OP
4902 bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	840
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	841 // Homogeneous binary integer operations.
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	842 #define OCTAVE_INT_BIN_OP(OP, NAME, ARGT) \
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	843 inline octave_int<T> \
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	844 operator OP (const ARGT& y) const \
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	845 { return octave_int_arith<T>::NAME (ival, y); } \
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	846 inline octave_int<T>& \
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	847 operator OP##= (const ARGT& y) \
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	848 { \
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	849 ival = octave_int_arith<T>::NAME (ival, y); \
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	850 return *this; \
4952 bfd57b466752 [project @ 2004-09-01 00:49:05 by jwe] jwe parents: 4949 diff changeset	851 }
bfd57b466752 [project @ 2004-09-01 00:49:05 by jwe] jwe parents: 4949 diff changeset	852
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	853 OCTAVE_INT_BIN_OP(+, add, octave_int<T>)
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	854 OCTAVE_INT_BIN_OP(-, sub, octave_int<T>)
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	855 OCTAVE_INT_BIN_OP(*, mul, octave_int<T>)
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	856 OCTAVE_INT_BIN_OP(/, div, octave_int<T>)
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	857 OCTAVE_INT_BIN_OP(<<, lshift, int)
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	858 OCTAVE_INT_BIN_OP(>>, rshift, int)
4952 bfd57b466752 [project @ 2004-09-01 00:49:05 by jwe] jwe parents: 4949 diff changeset	859
8185 69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	860 #undef OCTAVE_INT_BIN_OP
7503 8c32f95c2639 convert mapper functions to new format David Bateman <dbateman@free.fr> parents: 7198 diff changeset	861
8185 69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	862 static octave_int<T> min (void) { return std::numeric_limits<T>::min (); }
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	863 static octave_int<T> max (void) { return std::numeric_limits<T>::max (); }
4906 6754342ef7ad [project @ 2004-06-23 11:11:50 by jwe] jwe parents: 4902 diff changeset	864
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	865 static int nbits (void) { return std::numeric_limits<T>::digits; }
4909 5c9e36402f17 [project @ 2004-07-12 17:08:24 by jwe] jwe parents: 4906 diff changeset	866
4949 f6b63ff1119b [project @ 2004-08-31 19:17:44 by jwe] jwe parents: 4943 diff changeset	867 static int byte_size (void) { return sizeof(T); }
f6b63ff1119b [project @ 2004-08-31 19:17:44 by jwe] jwe parents: 4943 diff changeset	868
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	869 static const char *type_name ();
7997 2b8952e133c9 implement checked conversions between integers Jaroslav Hajek <highegg@gmail.com> parents: 7922 diff changeset	870
8185 69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	871 // The following are provided for convenience.
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	872 static const octave_int zero, one;
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	873
5900 c20eb7330d13 [project @ 2006-07-22 08:31:16 by jwe] jwe parents: 5898 diff changeset	874 // Unsafe. This function exists to support the MEX interface.
c20eb7330d13 [project @ 2006-07-22 08:31:16 by jwe] jwe parents: 5898 diff changeset	875 // You should not use it anywhere else.
c20eb7330d13 [project @ 2006-07-22 08:31:16 by jwe] jwe parents: 5898 diff changeset	876 void mex_get_data (void) const { return const_cast<T > (&ival); }
c20eb7330d13 [project @ 2006-07-22 08:31:16 by jwe] jwe parents: 5898 diff changeset	877
4902 bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	878 private:
bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	879
bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	880 T ival;
bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	881 };
bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	882
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	883 // No mixed integer binary operations!
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	884
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	885 template <class T>
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	886 inline bool
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	887 xisnan (const octave_int<T>&)
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	888 { return false; }
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	889
8333 9238637cb81c style fixes John W. Eaton <jwe@octave.org> parents: 8319 diff changeset	890 // FIXME -- can/should any of these be inline?
7997 2b8952e133c9 implement checked conversions between integers Jaroslav Hajek <highegg@gmail.com> parents: 7922 diff changeset	891
4902 bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	892 template <class T>
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	893 extern OCTAVE_API octave_int<T>
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	894 pow (const octave_int<T>&, const octave_int<T>&);
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	895
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	896 template <class T>
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	897 extern OCTAVE_API octave_int<T>
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	898 pow (const double& a, const octave_int<T>& b);
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	899
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	900 template <class T>
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	901 extern OCTAVE_API octave_int<T>
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	902 pow (const octave_int<T>& a, const double& b);
7922 935be827eaf8 error for NaN values in & and \| expressions John W. Eaton <jwe@octave.org> parents: 7789 diff changeset	903
935be827eaf8 error for NaN values in & and \| expressions John W. Eaton <jwe@octave.org> parents: 7789 diff changeset	904 template <class T>
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	905 extern OCTAVE_API octave_int<T>
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	906 powf (const float& a, const octave_int<T>& b);
4952 bfd57b466752 [project @ 2004-09-01 00:49:05 by jwe] jwe parents: 4949 diff changeset	907
bfd57b466752 [project @ 2004-09-01 00:49:05 by jwe] jwe parents: 4949 diff changeset	908 template <class T>
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	909 extern OCTAVE_API octave_int<T>
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	910 powf (const octave_int<T>& a, const float& b);
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	911
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	912 // Binary relations
4953 7a3a480e8645 [project @ 2004-09-01 21:10:28 by jwe] jwe parents: 4952 diff changeset	913
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	914 #define OCTAVE_INT_CMP_OP(OP, NAME) \
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	915 template<class T1, class T2> \
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	916 inline bool \
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	917 operator OP (const octave_int<T1>& x, const octave_int<T2>& y) \
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	918 { return octave_int_cmp_op::op<octave_int_cmp_op::NAME, T1, T2> \
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	919 (x.value (), y.value ()); }
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	920
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	921 OCTAVE_INT_CMP_OP (<, lt)
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	922 OCTAVE_INT_CMP_OP (<=, le)
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	923 OCTAVE_INT_CMP_OP (>, gt)
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	924 OCTAVE_INT_CMP_OP (>=, ge)
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	925 OCTAVE_INT_CMP_OP (==, eq)
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	926 OCTAVE_INT_CMP_OP (!=, ne)
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	927
8185 69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	928 #undef OCTAVE_INT_CMP_OP
4953 7a3a480e8645 [project @ 2004-09-01 21:10:28 by jwe] jwe parents: 4952 diff changeset	929
7a3a480e8645 [project @ 2004-09-01 21:10:28 by jwe] jwe parents: 4952 diff changeset	930 template <class T>
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	931 inline std::ostream&
4902 bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	932 operator << (std::ostream& os, const octave_int<T>& ival)
bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	933 {
bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	934 os << ival.value ();
bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	935 return os;
bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	936 }
bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	937
bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	938 template <class T>
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	939 inline std::istream&
4902 bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	940 operator >> (std::istream& is, octave_int<T>& ival)
bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	941 {
bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	942 T tmp = 0;
bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	943 is >> tmp;
bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	944 ival = tmp;
bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	945 return is;
bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	946 }
bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	947
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	948 // Bitwise operations
7789 82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7598 diff changeset	949
4906 6754342ef7ad [project @ 2004-06-23 11:11:50 by jwe] jwe parents: 4902 diff changeset	950 #define OCTAVE_INT_BITCMP_OP(OP) \
6754342ef7ad [project @ 2004-06-23 11:11:50 by jwe] jwe parents: 4902 diff changeset	951 template <class T> \
6754342ef7ad [project @ 2004-06-23 11:11:50 by jwe] jwe parents: 4902 diff changeset	952 octave_int<T> \
6754342ef7ad [project @ 2004-06-23 11:11:50 by jwe] jwe parents: 4902 diff changeset	953 operator OP (const octave_int<T>& x, const octave_int<T>& y) \
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	954 { return x.value () OP y.value (); }
4906 6754342ef7ad [project @ 2004-06-23 11:11:50 by jwe] jwe parents: 4902 diff changeset	955
6754342ef7ad [project @ 2004-06-23 11:11:50 by jwe] jwe parents: 4902 diff changeset	956 OCTAVE_INT_BITCMP_OP (&)
6754342ef7ad [project @ 2004-06-23 11:11:50 by jwe] jwe parents: 4902 diff changeset	957 OCTAVE_INT_BITCMP_OP (\|)
6754342ef7ad [project @ 2004-06-23 11:11:50 by jwe] jwe parents: 4902 diff changeset	958 OCTAVE_INT_BITCMP_OP (^)
6754342ef7ad [project @ 2004-06-23 11:11:50 by jwe] jwe parents: 4902 diff changeset	959
8185 69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	960 #undef OCTAVE_INT_BITCMP_OP
4906 6754342ef7ad [project @ 2004-06-23 11:11:50 by jwe] jwe parents: 4902 diff changeset	961
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	962 // General bit shift.
4909 5c9e36402f17 [project @ 2004-07-12 17:08:24 by jwe] jwe parents: 4906 diff changeset	963 template <class T>
5c9e36402f17 [project @ 2004-07-12 17:08:24 by jwe] jwe parents: 4906 diff changeset	964 octave_int<T>
4920 b22a7a1db0d5 [project @ 2004-07-27 18:15:25 by jwe] jwe parents: 4919 diff changeset	965 bitshift (const octave_int<T>& a, int n,
b22a7a1db0d5 [project @ 2004-07-27 18:15:25 by jwe] jwe parents: 4919 diff changeset	966 const octave_int<T>& mask = std::numeric_limits<T>::max ())
4909 5c9e36402f17 [project @ 2004-07-12 17:08:24 by jwe] jwe parents: 4906 diff changeset	967 {
5c9e36402f17 [project @ 2004-07-12 17:08:24 by jwe] jwe parents: 4906 diff changeset	968 if (n > 0)
4952 bfd57b466752 [project @ 2004-09-01 00:49:05 by jwe] jwe parents: 4949 diff changeset	969 return (a << n) & mask;
4909 5c9e36402f17 [project @ 2004-07-12 17:08:24 by jwe] jwe parents: 4906 diff changeset	970 else if (n < 0)
4952 bfd57b466752 [project @ 2004-09-01 00:49:05 by jwe] jwe parents: 4949 diff changeset	971 return (a >> -n) & mask;
4909 5c9e36402f17 [project @ 2004-07-12 17:08:24 by jwe] jwe parents: 4906 diff changeset	972 else
5c9e36402f17 [project @ 2004-07-12 17:08:24 by jwe] jwe parents: 4906 diff changeset	973 return a;
5c9e36402f17 [project @ 2004-07-12 17:08:24 by jwe] jwe parents: 4906 diff changeset	974 }
5c9e36402f17 [project @ 2004-07-12 17:08:24 by jwe] jwe parents: 4906 diff changeset	975
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	976 typedef octave_int<int8_t> octave_int8;
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	977 typedef octave_int<int16_t> octave_int16;
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	978 typedef octave_int<int32_t> octave_int32;
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	979 typedef octave_int<int64_t> octave_int64;
4902 bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	980
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	981 typedef octave_int<uint8_t> octave_uint8;
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	982 typedef octave_int<uint16_t> octave_uint16;
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	983 typedef octave_int<uint32_t> octave_uint32;
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	984 typedef octave_int<uint64_t> octave_uint64;
5072 97b62f0c1bee [project @ 2004-11-09 05:51:30 by jwe] jwe parents: 5030 diff changeset	985
8185 69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	986 #define OCTAVE_INT_DOUBLE_BIN_OP0(OP) \
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	987 template <class T> \
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	988 inline octave_int<T> \
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	989 operator OP (const octave_int<T>& x, const double& y) \
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	990 { return octave_int<T> (static_cast<double> (x) OP y); } \
8185 69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	991 template <class T> \
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	992 inline octave_int<T> \
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	993 operator OP (const double& x, const octave_int<T>& y) \
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	994 { return octave_int<T> (x OP static_cast<double> (y)); } \
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	995
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	996 #ifdef OCTAVE_INT_USE_LONG_DOUBLE
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	997 // Handle mixed op using long double
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	998 #define OCTAVE_INT_DOUBLE_BIN_OP(OP) \
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	999 OCTAVE_INT_DOUBLE_BIN_OP0(OP) \
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	1000 template <> \
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	1001 inline octave_int64 \
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	1002 operator OP (const double& x, const octave_int64& y) \
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	1003 { return octave_int64 (x OP static_cast<long double> (y.value ())); } \
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	1004 template <> \
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	1005 inline octave_uint64 \
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	1006 operator OP (const double& x, const octave_uint64& y) \
8191 9cb73236e552 fix uint64 mixed operations Jaroslav Hajek <highegg@gmail.com> parents: 8185 diff changeset	1007 { return octave_uint64 (x OP static_cast<long double> (y.value ())); } \
8185 69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	1008 template <> \
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	1009 inline octave_int64 \
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	1010 operator OP (const octave_int64& x, const double& y) \
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	1011 { return octave_int64 (static_cast<long double> (x.value ()) OP y); } \
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	1012 template <> \
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	1013 inline octave_uint64 \
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	1014 operator OP (const octave_uint64& x, const double& y) \
8191 9cb73236e552 fix uint64 mixed operations Jaroslav Hajek <highegg@gmail.com> parents: 8185 diff changeset	1015 { return octave_uint64 (static_cast<long double> (x.value ()) OP y); }
8185 69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	1016
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	1017 #else
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	1018 // external handlers
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	1019 #define OCTAVE_INT_DOUBLE_BIN_OP(OP) \
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	1020 OCTAVE_INT_DOUBLE_BIN_OP0(OP) \
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	1021 template <> \
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	1022 OCTAVE_API octave_int64 \
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	1023 operator OP (const double&, const octave_int64&); \
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	1024 template <> \
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	1025 OCTAVE_API octave_uint64 \
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	1026 operator OP (const double&, const octave_uint64&); \
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	1027 template <> \
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	1028 OCTAVE_API octave_int64 \
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	1029 operator OP (const octave_int64&, const double&); \
7521 6f10bbb2854a avoid some GCC warnings for unsigned comparisons John W. Eaton <jwe@octave.org> parents: 7503 diff changeset	1030 template <> \
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	1031 OCTAVE_API octave_uint64 \
8185 69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	1032 operator OP (const octave_uint64&, const double&);
5072 97b62f0c1bee [project @ 2004-11-09 05:51:30 by jwe] jwe parents: 5030 diff changeset	1033
8185 69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	1034 #endif
5072 97b62f0c1bee [project @ 2004-11-09 05:51:30 by jwe] jwe parents: 5030 diff changeset	1035
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	1036 OCTAVE_INT_DOUBLE_BIN_OP (+)
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	1037 OCTAVE_INT_DOUBLE_BIN_OP (-)
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	1038 OCTAVE_INT_DOUBLE_BIN_OP (*)
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	1039 OCTAVE_INT_DOUBLE_BIN_OP (/)
5072 97b62f0c1bee [project @ 2004-11-09 05:51:30 by jwe] jwe parents: 5030 diff changeset	1040
8185 69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	1041 #undef OCTAVE_INT_DOUBLE_BIN_OP0
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	1042 #undef OCTAVE_INT_DOUBLE_BIN_OP
5072 97b62f0c1bee [project @ 2004-11-09 05:51:30 by jwe] jwe parents: 5030 diff changeset	1043
8185 69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	1044 #define OCTAVE_INT_DOUBLE_CMP_OP(OP,NAME) \
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	1045 template <class T> \
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	1046 inline bool \
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	1047 operator OP (const octave_int<T>& x, const double& y) \
8185 69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	1048 { return octave_int_cmp_op::mop<octave_int_cmp_op::NAME> (x.value (), y); } \
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	1049 template <class T> \
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	1050 inline bool \
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	1051 operator OP (const double& x, const octave_int<T>& y) \
8185 69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	1052 { return octave_int_cmp_op::mop<octave_int_cmp_op::NAME> (x, y.value ()); }
5072 97b62f0c1bee [project @ 2004-11-09 05:51:30 by jwe] jwe parents: 5030 diff changeset	1053
8185 69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	1054 OCTAVE_INT_DOUBLE_CMP_OP (<, lt)
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	1055 OCTAVE_INT_DOUBLE_CMP_OP (<=, le)
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	1056 OCTAVE_INT_DOUBLE_CMP_OP (>=, ge)
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	1057 OCTAVE_INT_DOUBLE_CMP_OP (>, gt)
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	1058 OCTAVE_INT_DOUBLE_CMP_OP (==, eq)
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	1059 OCTAVE_INT_DOUBLE_CMP_OP (!=, ne)
5072 97b62f0c1bee [project @ 2004-11-09 05:51:30 by jwe] jwe parents: 5030 diff changeset	1060
8185 69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	1061 #undef OCTAVE_INT_DOUBLE_CMP_OP
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	1062
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	1063 // Floats are handled by simply converting to doubles.
5072 97b62f0c1bee [project @ 2004-11-09 05:51:30 by jwe] jwe parents: 5030 diff changeset	1064
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	1065 #define OCTAVE_INT_FLOAT_BIN_OP(OP) \
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	1066 template <class T> \
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	1067 inline octave_int<T> \
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	1068 operator OP (const octave_int<T>& x, float y) \
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	1069 { return x OP static_cast<double> (y); } \
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	1070 template <class T> \
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	1071 inline octave_int<T> \
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	1072 operator OP (float x, const octave_int<T>& y) \
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	1073 { return static_cast<double> (x) OP y; }
5072 97b62f0c1bee [project @ 2004-11-09 05:51:30 by jwe] jwe parents: 5030 diff changeset	1074
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	1075 OCTAVE_INT_FLOAT_BIN_OP (+)
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	1076 OCTAVE_INT_FLOAT_BIN_OP (-)
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	1077 OCTAVE_INT_FLOAT_BIN_OP (*)
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	1078 OCTAVE_INT_FLOAT_BIN_OP (/)
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	1079
8185 69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	1080 #undef OCTAVE_INT_FLOAT_BIN_OP
5072 97b62f0c1bee [project @ 2004-11-09 05:51:30 by jwe] jwe parents: 5030 diff changeset	1081
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	1082 #define OCTAVE_INT_FLOAT_CMP_OP(OP) \
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	1083 template <class T> \
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	1084 inline bool \
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	1085 operator OP (const octave_int<T>& x, const float& y) \
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	1086 { return x OP static_cast<double> (y); } \
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	1087 template <class T> \
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	1088 bool \
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	1089 operator OP (const float& x, const octave_int<T>& y) \
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	1090 { return static_cast<double> (x) OP y; }
4902 bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	1091
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	1092 OCTAVE_INT_FLOAT_CMP_OP (<)
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	1093 OCTAVE_INT_FLOAT_CMP_OP (<=)
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	1094 OCTAVE_INT_FLOAT_CMP_OP (>=)
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	1095 OCTAVE_INT_FLOAT_CMP_OP (>)
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	1096 OCTAVE_INT_FLOAT_CMP_OP (==)
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	1097 OCTAVE_INT_FLOAT_CMP_OP (!=)
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	1098
8185 69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	1099 #undef OCTAVE_INT_FLOAT_CMP_OP
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	1100
4902 bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	1101 #endif
bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	1102
bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	1103 /*
bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	1104 ;;; Local Variables: ***
bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	1105 ;;; mode: C++ ***
bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	1106 ;;; End: ***
bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	1107 */

Mercurial > octave

annotate liboctave/oct-inttypes.h @ 8333:9238637cb81c