octave: liboctave/util/oct-inttypes.h annotate

annotate liboctave/util/oct-inttypes.h @ 17744:d63878346099

maint: Update copyright notices for release.

author	John W. Eaton <jwe@octave.org>
date	Wed, 23 Oct 2013 22:09:27 -0400
parents	648dabbb4c6b
children	49a5a4be04a1

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
17744 d63878346099 maint: Update copyright notices for release. John W. Eaton <jwe@octave.org> parents: 15271 diff changeset	3 Copyright (C) 2004-2013 John W. Eaton
11523 fd0a3ac60b0e update copyright notices John W. Eaton <jwe@octave.org> parents: 10436 diff changeset	4 Copyright (C) 2008-2009 Jaroslav Hajek
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
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	27 #include <cstdlib>
6482 7e958a1532c6 [project @ 2007-04-04 02:37:07 by jwe] jwe parents: 6402 diff changeset	28
4902 bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	29 #include <limits>
8950 d865363208d6 include <iosfwd> instead of <iostream> in header files John W. Eaton <jwe@octave.org> parents: 8920 diff changeset	30 #include <iosfwd>
4902 bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	31
8731 5abe5ae55465 use lo-traits in oct-inttypes Jaroslav Hajek <highegg@gmail.com> parents: 8333 diff changeset	32 #include "lo-traits.h"
8185 69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	33 #include "lo-math.h"
4969 52f808101130 [project @ 2004-09-08 02:44:04 by jwe] jwe parents: 4968 diff changeset	34 #include "lo-mappers.h"
4902 bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	35
8185 69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	36 #ifdef OCTAVE_INT_USE_LONG_DOUBLE
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	37 inline long double xround (long double x) { return roundl (x); }
9003 0631d397fbe0 replace lo_ieee_isnan by xisnan, add missing includes Jaroslav Hajek <highegg@gmail.com> parents: 8963 diff changeset	38 inline long double xisnan (long double x) { return xisnan (static_cast<double> (x)); }
8185 69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	39 #endif
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	40
8333 9238637cb81c style fixes John W. Eaton <jwe@octave.org> parents: 8319 diff changeset	41 // 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	42 // 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	43 // 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	44 template <class T>
ad5bb02d267a workaround missing std::abs(int64_t) in MSVC Jaroslav Hajek <highegg@gmail.com> parents: 8202 diff changeset	45 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	46
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	47 // 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	48 template<int qsize, bool qsigned>
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	49 struct query_integer_type
4902 bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	50 {
bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	51 public:
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	52 static const bool registered = false;
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	53 typedef void type; // Void shall result in a compile-time error if we
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	54 // attempt to use it in computations.
4902 bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	55 };
bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	56
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	57 #define REGISTER_INT_TYPE(TYPE) \
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	58 template <> \
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	59 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	60 { \
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	61 public: \
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	62 static const bool registered = true; \
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	63 typedef TYPE type; \
7598 a89b3fa632ee partial specialization for octave_int_fit_to_range John W. Eaton <jwe@octave.org> parents: 7596 diff changeset	64 }
7596 6929e40fc597 compatible handling of NaN -> int conversions John W. Eaton <jwe@octave.org> parents: 7534 diff changeset	65
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	66 // No two registered integers can share sizeof and signedness.
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	67 REGISTER_INT_TYPE (int8_t);
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	68 REGISTER_INT_TYPE (uint8_t);
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	69 REGISTER_INT_TYPE (int16_t);
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	70 REGISTER_INT_TYPE (uint16_t);
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	71 REGISTER_INT_TYPE (int32_t);
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	72 REGISTER_INT_TYPE (uint32_t);
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	73 REGISTER_INT_TYPE (int64_t);
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	74 REGISTER_INT_TYPE (uint64_t);
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	75
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	76 // 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	77 // result of the binary relation. They also have two static boolean fields:
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	78 // ltval, gtval determine the value of x OP y if x < y, x > y, respectively.
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	79 #define REGISTER_OCTAVE_CMP_OP(NM,OP) \
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	80 class NM \
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	81 { \
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	82 public: \
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	83 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	84 template <class T> \
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	85 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	86 }
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	87
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	88 // 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	89 // yielding always false.
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	90 #define REGISTER_OCTAVE_CONST_OP(NM,value) \
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	91 class NM \
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	92 { \
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	93 public: \
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	94 static const bool ltval = value, gtval = value; \
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	95 template <class T> \
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	96 static bool op (T, T) { return value; } \
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	97 }
4943 1a499d0c58f5 [project @ 2004-08-31 00:51:31 by jwe] jwe parents: 4920 diff changeset	98
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	99 // Handles non-homogeneous integer comparisons. Avoids doing useless tests.
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	100 class octave_int_cmp_op
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	101 {
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	102 // 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	103 // 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	104 // 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	105 // 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	106 // size.
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	107 template <class T1, class T2>
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	108 class prom
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	109 {
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	110 // Promote to int?
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	111 static const bool pint = (sizeof (T1) < sizeof (int)
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	112 && sizeof (T2) < sizeof (int));
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	113 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	114 static const bool t2sig = std::numeric_limits<T2>::is_signed;
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	115 static const bool psig =
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	116 (pint \|\| (sizeof (T2) > sizeof (T1) && t2sig) \|\| t1sig);
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	117 static const int psize =
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	118 (pint ? sizeof (int) : (sizeof (T2) > sizeof (T1)
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	119 ? sizeof (T2) : sizeof (T1)));
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	120 public:
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	121 typedef typename query_integer_type<psize, psig>::type type;
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	122 };
4943 1a499d0c58f5 [project @ 2004-08-31 00:51:31 by jwe] jwe parents: 4920 diff changeset	123
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	124 // Implements comparisons between two types of equal size but
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	125 // possibly different signedness.
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	126 template<class xop, int size>
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	127 class uiop
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	128 {
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	129 typedef typename query_integer_type<size, false>::type utype;
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	130 typedef typename query_integer_type<size, true>::type stype;
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	131 public:
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	132 static bool op (utype x, utype y)
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	133 { return xop::op (x, y); }
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	134 static bool op (stype x, stype y)
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	135 { return xop::op (x, y); }
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	136 static bool op (stype x, utype y)
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	137 { return (x < 0) ? xop::ltval : xop::op (static_cast<utype> (x), y); }
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	138 static bool op (utype x, stype y)
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	139 { 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	140 };
4943 1a499d0c58f5 [project @ 2004-08-31 00:51:31 by jwe] jwe parents: 4920 diff changeset	141
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	142 public:
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	143 REGISTER_OCTAVE_CMP_OP (lt, <);
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	144 REGISTER_OCTAVE_CMP_OP (le, <=);
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	145 REGISTER_OCTAVE_CMP_OP (gt, >);
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	146 REGISTER_OCTAVE_CMP_OP (ge, >=);
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	147 REGISTER_OCTAVE_CMP_OP (eq, ==);
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	148 REGISTER_OCTAVE_CMP_OP (ne, !=);
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	149 REGISTER_OCTAVE_CONST_OP (ct, true);
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	150 REGISTER_OCTAVE_CONST_OP (cf, false);
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	151
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	152 // Universal comparison operation.
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	153 template<class xop, class T1, class T2>
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	154 static bool
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	155 op (T1 x, T2 y)
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	156 {
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	157 typedef typename prom<T1, T2>::type PT1;
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	158 typedef typename prom<T2, T1>::type PT2;
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	159 return uiop<xop, sizeof (PT1)>::op (static_cast<PT1> (x),
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	160 static_cast<PT2> (y));
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	161 }
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	162
8185 69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	163 public:
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	164
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	165 // Mixed comparisons
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	166 template <class xop, class T>
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	167 static bool
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	168 mop (T x, double y)
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	169 { return xop::op (static_cast<double> (x), y); }
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	170
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	171 template <class xop, class T>
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	172 static bool
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	173 mop (double x, T y)
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	174 { return xop::op (x, static_cast<double> (y)); }
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	175
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	176 // 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	177 // If we have long doubles, use them...
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	178 #ifdef OCTAVE_INT_USE_LONG_DOUBLE
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	179 #define DEFINE_LONG_DOUBLE_CMP_OP(T1, T2) \
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	180 template <class xop> \
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	181 static bool \
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	182 mop (T1 x, T2 y) \
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	183 { \
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	184 return xop::op (static_cast<long double> (x), \
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	185 static_cast<long double> (y)); \
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	186 }
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	187 #else
8856 ab4db66e286f workaround gcc 4.3 explicit instantiation bug in octave_int_cmp_op Jaroslav Hajek <highegg@gmail.com> parents: 8731 diff changeset	188 // ... otherwise, use external handlers
ab4db66e286f workaround gcc 4.3 explicit instantiation bug in octave_int_cmp_op Jaroslav Hajek <highegg@gmail.com> parents: 8731 diff changeset	189
ab4db66e286f workaround gcc 4.3 explicit instantiation bug in octave_int_cmp_op Jaroslav Hajek <highegg@gmail.com> parents: 8731 diff changeset	190 // FIXME: We could declare directly the mop methods as external,
ab4db66e286f workaround gcc 4.3 explicit instantiation bug in octave_int_cmp_op Jaroslav Hajek <highegg@gmail.com> parents: 8731 diff changeset	191 // but we can't do this because bugs in gcc (<= 4.3) prevent
ab4db66e286f workaround gcc 4.3 explicit instantiation bug in octave_int_cmp_op Jaroslav Hajek <highegg@gmail.com> parents: 8731 diff changeset	192 // explicit instantiations later in that case.
ab4db66e286f workaround gcc 4.3 explicit instantiation bug in octave_int_cmp_op Jaroslav Hajek <highegg@gmail.com> parents: 8731 diff changeset	193 #define DEFINE_LONG_DOUBLE_CMP_OP(T1, T2) \
ab4db66e286f workaround gcc 4.3 explicit instantiation bug in octave_int_cmp_op Jaroslav Hajek <highegg@gmail.com> parents: 8731 diff changeset	194 template <class xop> static OCTAVE_API bool \
ab4db66e286f workaround gcc 4.3 explicit instantiation bug in octave_int_cmp_op Jaroslav Hajek <highegg@gmail.com> parents: 8731 diff changeset	195 emulate_mop (T1, T2); \
ab4db66e286f workaround gcc 4.3 explicit instantiation bug in octave_int_cmp_op Jaroslav Hajek <highegg@gmail.com> parents: 8731 diff changeset	196 template <class xop> \
ab4db66e286f workaround gcc 4.3 explicit instantiation bug in octave_int_cmp_op Jaroslav Hajek <highegg@gmail.com> parents: 8731 diff changeset	197 static bool \
ab4db66e286f workaround gcc 4.3 explicit instantiation bug in octave_int_cmp_op Jaroslav Hajek <highegg@gmail.com> parents: 8731 diff changeset	198 mop (T1 x, T2 y) \
ab4db66e286f workaround gcc 4.3 explicit instantiation bug in octave_int_cmp_op Jaroslav Hajek <highegg@gmail.com> parents: 8731 diff changeset	199 { \
ab4db66e286f workaround gcc 4.3 explicit instantiation bug in octave_int_cmp_op Jaroslav Hajek <highegg@gmail.com> parents: 8731 diff changeset	200 return emulate_mop<xop> (x, y); \
ab4db66e286f workaround gcc 4.3 explicit instantiation bug in octave_int_cmp_op Jaroslav Hajek <highegg@gmail.com> parents: 8731 diff changeset	201 }
ab4db66e286f workaround gcc 4.3 explicit instantiation bug in octave_int_cmp_op Jaroslav Hajek <highegg@gmail.com> parents: 8731 diff changeset	202 #endif
ab4db66e286f workaround gcc 4.3 explicit instantiation bug in octave_int_cmp_op Jaroslav Hajek <highegg@gmail.com> parents: 8731 diff changeset	203
8185 69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	204 DEFINE_LONG_DOUBLE_CMP_OP(double, uint64_t)
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	205 DEFINE_LONG_DOUBLE_CMP_OP(double, int64_t)
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	206 DEFINE_LONG_DOUBLE_CMP_OP(int64_t, double)
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	207 DEFINE_LONG_DOUBLE_CMP_OP(uint64_t, double)
8856 ab4db66e286f workaround gcc 4.3 explicit instantiation bug in octave_int_cmp_op Jaroslav Hajek <highegg@gmail.com> parents: 8731 diff changeset	208
8185 69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	209 #undef DEFINE_LONG_DOUBLE_CMP_OP
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	210 };
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	211
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	212 // Base integer class. No data, just conversion methods and exception flags.
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	213 template <class T>
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	214 class octave_int_base
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	215 {
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	216 protected:
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	217
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	218 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	219 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	220
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	221 public:
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	222
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	223 // Convert integer value.
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	224 template <class S>
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	225 static T
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	226 truncate_int (const S& value)
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	227 {
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	228 // 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	229 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	230 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	231 static const int t_size = sizeof (T), s_size = sizeof (S);
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	232 static const bool omit_chk_min =
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	233 (! s_is_signed \|\| (t_is_signed && t_size >= s_size));
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	234 static const bool omit_chk_max =
12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	235 (t_size > s_size \|\| (t_size == s_size
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	236 && (! t_is_signed \|\| s_is_signed)));
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	237 // 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	238 typedef octave_int_cmp_op::cf cf;
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	239 typedef octave_int_cmp_op::lt lt;
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	240 typedef octave_int_cmp_op::gt gt;
8731 5abe5ae55465 use lo-traits in oct-inttypes Jaroslav Hajek <highegg@gmail.com> parents: 8333 diff changeset	241 typedef typename if_then_else<omit_chk_min, cf, lt>::result chk_min;
5abe5ae55465 use lo-traits in oct-inttypes Jaroslav Hajek <highegg@gmail.com> parents: 8333 diff changeset	242 typedef typename if_then_else<omit_chk_max, cf, gt>::result chk_max;
4943 1a499d0c58f5 [project @ 2004-08-31 00:51:31 by jwe] jwe parents: 4920 diff changeset	243
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	244 // 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	245 // 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	246 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	247 {
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	248 return min_val ();
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	249 }
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	250 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	251 {
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	252 return max_val ();
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	253 }
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	254 else
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	255 return static_cast<T> (value);
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	256 }
4943 1a499d0c58f5 [project @ 2004-08-31 00:51:31 by jwe] jwe parents: 4920 diff changeset	257
8185 69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	258 private:
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	259
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	260 // 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	261 template <class S>
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	262 static S
8185 69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	263 compute_threshold (S val, T orig_val)
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	264 {
8193 5fd507839b76 remove the int->real conversion code vulnerability to compiler optimization Jaroslav Hajek <highegg@gmail.com> parents: 8191 diff changeset	265 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	266 // 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	267 if (orig_val % 2 && val / 2 == xround (val / 2))
8333 9238637cb81c style fixes John W. Eaton <jwe@octave.org> parents: 8319 diff changeset	268 // FIXME -- is this always correct?
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	269 val *= (static_cast<S>(1) - (std::numeric_limits<S>::epsilon () / 2));
8193 5fd507839b76 remove the int->real conversion code vulnerability to compiler optimization Jaroslav Hajek <highegg@gmail.com> parents: 8191 diff changeset	270 return val;
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	271 }
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	272
8185 69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	273 public:
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	274 // Convert a real number (check NaN and non-int).
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	275 template <class S>
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	276 static T
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	277 convert_real (const S& value)
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	278 {
8185 69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	279 // Compute proper thresholds.
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	280 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	281 static const S thmax = compute_threshold (static_cast<S> (max_val ()), max_val ());
9003 0631d397fbe0 replace lo_ieee_isnan by xisnan, add missing includes Jaroslav Hajek <highegg@gmail.com> parents: 8963 diff changeset	282 if (xisnan (value))
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	283 {
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	284 return static_cast<T> (0);
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	285 }
8193 5fd507839b76 remove the int->real conversion code vulnerability to compiler optimization Jaroslav Hajek <highegg@gmail.com> parents: 8191 diff changeset	286 else if (value < thmin)
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	287 {
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	288 return min_val ();
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	289 }
8193 5fd507839b76 remove the int->real conversion code vulnerability to compiler optimization Jaroslav Hajek <highegg@gmail.com> parents: 8191 diff changeset	290 else if (value > thmax)
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	291 {
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	292 return max_val ();
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	293 }
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	294 else
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	295 {
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	296 S rvalue = xround (value);
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	297 return static_cast<T> (rvalue);
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	298 }
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	299 }
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	300 };
7521 6f10bbb2854a avoid some GCC warnings for unsigned comparisons John W. Eaton <jwe@octave.org> parents: 7503 diff changeset	301
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	302 // Saturated (homogeneous) integer arithmetics. The signed and unsigned
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	303 // implementations are significantly different, so we implement another layer
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	304 // 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	305 // 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	306
6f10bbb2854a avoid some GCC warnings for unsigned comparisons John W. Eaton <jwe@octave.org> parents: 7503 diff changeset	307 template <class T, bool is_signed>
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	308 class octave_int_arith_base
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	309 { };
7521 6f10bbb2854a avoid some GCC warnings for unsigned comparisons John W. Eaton <jwe@octave.org> parents: 7503 diff changeset	310
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	311 // 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	312 // 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	313 template <class T>
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	314 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	315 {
6f10bbb2854a avoid some GCC warnings for unsigned comparisons John W. Eaton <jwe@octave.org> parents: 7503 diff changeset	316 public:
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	317
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	318 static T
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	319 abs (T x) { return x; }
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	320
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	321 static T
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	322 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	323
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	324 // Shifts do not overflow.
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	325 static T
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	326 rshift (T x, int n) { return x >> n; }
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	327
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	328 static T
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	329 lshift (T x, int n) { return x << n; }
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	330
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	331 static T
10405 cc69a17ec801 remove integer math warnings Jaroslav Hajek <highegg@gmail.com> parents: 10346 diff changeset	332 minus (T)
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	333 {
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	334 return static_cast<T> (0);
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	335 }
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 // 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	338 // so the following should always work.
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	339 static T
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	340 add (T x, T y)
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	341 {
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	342 T u = x + y;
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	343 if (u < x)
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 u = octave_int_base<T>::max_val ();
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	346 }
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	347 return u;
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	348 }
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	349
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	350 static T
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	351 sub (T x, T y)
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	352 {
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	353 T u = x - y;
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	354 if (u > x)
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	355 {
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	356 u = 0;
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	357 }
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	358 return u;
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	359 }
7521 6f10bbb2854a avoid some GCC warnings for unsigned comparisons John W. Eaton <jwe@octave.org> parents: 7503 diff changeset	360
8185 69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	361 // Multiplication is done using promotion to wider integer type. If there is
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	362 // no suitable promotion type, this operation MUST be specialized.
12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	363 static T
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	364 mul (T x, T y)
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	365 {
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	366 // Promotion type for multiplication (if exists).
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	367 typedef typename query_integer_type<2*sizeof (T), false>::type mptype;
14168 7ffd2a0791ef fix name lookup problem with static nested class John W. Eaton <jwe@octave.org> parents: 14138 diff changeset	368 return octave_int_base<T>::truncate_int (static_cast<mptype> (x)
7ffd2a0791ef fix name lookup problem with static nested class John W. Eaton <jwe@octave.org> parents: 14138 diff changeset	369 * static_cast<mptype> (y));
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	370 }
7521 6f10bbb2854a avoid some GCC warnings for unsigned comparisons John W. Eaton <jwe@octave.org> parents: 7503 diff changeset	371
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	372 // 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	373 // computed by a single instruction.
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	374 static T
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	375 div (T x, T y)
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	376 {
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	377 if (y != 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 T z = x / y, w = x % y;
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	380 if (w >= y-w) z += 1;
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	381 return z;
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 else
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	384 {
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	385 return x ? octave_int_base<T>::max_val () : 0;
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	386 }
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	387 }
10436 00219bdd2d17 implement built-in rem and mod Jaroslav Hajek <highegg@gmail.com> parents: 10405 diff changeset	388
00219bdd2d17 implement built-in rem and mod Jaroslav Hajek <highegg@gmail.com> parents: 10405 diff changeset	389 // Remainder.
00219bdd2d17 implement built-in rem and mod Jaroslav Hajek <highegg@gmail.com> parents: 10405 diff changeset	390 static T
00219bdd2d17 implement built-in rem and mod Jaroslav Hajek <highegg@gmail.com> parents: 10405 diff changeset	391 rem (T x, T y)
00219bdd2d17 implement built-in rem and mod Jaroslav Hajek <highegg@gmail.com> parents: 10405 diff changeset	392 {
00219bdd2d17 implement built-in rem and mod Jaroslav Hajek <highegg@gmail.com> parents: 10405 diff changeset	393 return y != 0 ? x % y : 0;
00219bdd2d17 implement built-in rem and mod Jaroslav Hajek <highegg@gmail.com> parents: 10405 diff changeset	394 }
00219bdd2d17 implement built-in rem and mod Jaroslav Hajek <highegg@gmail.com> parents: 10405 diff changeset	395
00219bdd2d17 implement built-in rem and mod Jaroslav Hajek <highegg@gmail.com> parents: 10405 diff changeset	396 // Modulus. Note the weird y = 0 case for Matlab compatibility.
00219bdd2d17 implement built-in rem and mod Jaroslav Hajek <highegg@gmail.com> parents: 10405 diff changeset	397 static T
00219bdd2d17 implement built-in rem and mod Jaroslav Hajek <highegg@gmail.com> parents: 10405 diff changeset	398 mod (T x, T y)
00219bdd2d17 implement built-in rem and mod Jaroslav Hajek <highegg@gmail.com> parents: 10405 diff changeset	399 {
00219bdd2d17 implement built-in rem and mod Jaroslav Hajek <highegg@gmail.com> parents: 10405 diff changeset	400 return y != 0 ? x % y : x;
00219bdd2d17 implement built-in rem and mod Jaroslav Hajek <highegg@gmail.com> parents: 10405 diff changeset	401 }
7521 6f10bbb2854a avoid some GCC warnings for unsigned comparisons John W. Eaton <jwe@octave.org> parents: 7503 diff changeset	402 };
6f10bbb2854a avoid some GCC warnings for unsigned comparisons John W. Eaton <jwe@octave.org> parents: 7503 diff changeset	403
8185 69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	404 #ifdef OCTAVE_INT_USE_LONG_DOUBLE
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	405 // Handle 64-bit multiply using long double
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	406 template <>
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	407 inline uint64_t
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	408 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	409 {
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	410 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	411 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	412 {
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	413 return octave_int_base<uint64_t>::max_val ();
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	414 }
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	415 else
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	416 return static_cast<uint64_t> (p);
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	417 }
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	418 #else
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	419 // Special handler for 64-bit integer multiply.
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	420 template <>
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	421 OCTAVE_API uint64_t
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	422 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	423 #endif
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	424
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	425 // Signed integer arithmetics.
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	426 // 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	427 // should hold:
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	428 // 1. Signed numbers are represented by twos complement
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	429 // (see <http://en.wikipedia.org/wiki/Two%27s_complement>)
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	430 // 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	431 // 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	432 // 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	433 // (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	434 // need for things like -ftrapv).
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	435 // 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	436 // except for the shifts. Shifts are arithmetic.
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	437 //
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	438 // 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	439 // 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	440 // 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	441 // pipeline processor architectures.
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	442 // Otherwise, we fall back to a bullet-proof code that only uses assumptions
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	443 // guaranteed by the standard.
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	444
7521 6f10bbb2854a avoid some GCC warnings for unsigned comparisons John W. Eaton <jwe@octave.org> parents: 7503 diff changeset	445 template <class T>
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	446 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	447 {
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	448 // The corresponding unsigned type.
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	449 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	450 public:
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	451
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	452 // Returns 1 for negative number, 0 otherwise.
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	453 static T
13734 28ddb3150943 Rename signbit to __signbit, until the problem is fixed in gnulib. Michael Goffioul <michael.goffioul@gmail.com> parents: 13012 diff changeset	454 __signbit (T x)
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	455 {
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	456 #ifdef HAVE_FAST_INT_OPS
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	457 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	458 #else
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	459 return (x < 0) ? 1 : 0;
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	460 #endif
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	461 }
7521 6f10bbb2854a avoid some GCC warnings for unsigned comparisons John W. Eaton <jwe@octave.org> parents: 7503 diff changeset	462
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	463 static T
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	464 abs (T x)
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	465 {
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	466 #ifdef HAVE_FAST_INT_OPS
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	467 // 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	468 // 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	469 // discard the following test.
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	470 T m = x >> std::numeric_limits<T>::digits;
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	471 T y = (x ^ m) - m;
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	472 if (y < 0)
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	473 {
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	474 y = octave_int_base<T>::max_val ();
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	475 }
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	476 return y;
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	477 #else
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	478 // -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	479 // of integers: sign & magnitude, ones complement and twos complement.
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	480 // 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	481 // time, and maybe eliminate the branch completely.
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	482 T y;
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	483 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	484 && x == octave_int_base<T>::min_val ())
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	485 {
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	486 y = octave_int_base<T>::max_val ();
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	487 }
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	488 else
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	489 y = (x < 0) ? -x : x;
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	490 return y;
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	491 #endif
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	492 }
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	493
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	494 static T
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	495 signum (T x)
12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	496 {
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	497 // With modest optimizations, this will compile without a jump.
13734 28ddb3150943 Rename signbit to __signbit, until the problem is fixed in gnulib. Michael Goffioul <michael.goffioul@gmail.com> parents: 13012 diff changeset	498 return ((x > 0) ? 1 : 0) - __signbit (x);
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	499 }
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	500
8333 9238637cb81c style fixes John W. Eaton <jwe@octave.org> parents: 8319 diff changeset	501 // FIXME -- we do not have an authority what signed shifts should
9238637cb81c style fixes John W. Eaton <jwe@octave.org> parents: 8319 diff changeset	502 // 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	503 // not define signed shifts.
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	504
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	505 static T
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	506 rshift (T x, int n) { return x >> n; }
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	507
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	508 static T
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	509 lshift (T x, int n) { return x << n; }
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	510
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	511 // Minus has problems similar to abs.
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	512 static T
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	513 minus (T x)
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	514 {
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	515 #ifdef HAVE_FAST_INT_OPS
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	516 T y = -x;
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	517 if (y == octave_int_base<T>::min_val ())
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	518 {
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	519 --y;
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	520 }
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	521 return y;
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	522 #else
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	523 T y;
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	524 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	525 && x == octave_int_base<T>::min_val ())
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	526 {
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	527 y = octave_int_base<T>::max_val ();
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	528 }
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	529 else
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	530 y = -x;
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	531 return y;
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	532 #endif
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	533 }
7521 6f10bbb2854a avoid some GCC warnings for unsigned comparisons John W. Eaton <jwe@octave.org> parents: 7503 diff changeset	534
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	535 static T
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	536 add (T x, T y)
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	537 {
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	538 #ifdef HAVE_FAST_INT_OPS
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	539 // 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	540 // 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	541 // actually return int.
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	542 T u = static_cast<UT> (x) + static_cast<UT> (y);
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	543 T ux = u ^ x, uy = u ^ y;
12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	544 if ((ux & uy) < 0)
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	545 {
13734 28ddb3150943 Rename signbit to __signbit, until the problem is fixed in gnulib. Michael Goffioul <michael.goffioul@gmail.com> parents: 13012 diff changeset	546 u = octave_int_base<T>::max_val () + __signbit (~u);
8169 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 return u;
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	549 #else
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	550 // We shall carefully avoid anything that may overflow.
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	551 T u;
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	552 if (y < 0)
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	553 {
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	554 if (x < octave_int_base<T>::min_val () - y)
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 u = octave_int_base<T>::min_val ();
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	557 }
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	558 else
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	559 u = x + y;
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	560 }
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	561 else
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 if (x > octave_int_base<T>::max_val () - y)
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	564 {
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	565 u = octave_int_base<T>::max_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 else
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	568 u = x + y;
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
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	571 return u;
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	572 #endif
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	573 }
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	574
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	575 // This is very similar to addition.
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	576 static T
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	577 sub (T x, T y)
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 #ifdef HAVE_FAST_INT_OPS
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	580 // 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	581 // 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	582 // actually return int.
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	583 T u = static_cast<UT> (x) - static_cast<UT> (y);
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	584 T ux = u ^ x, uy = u ^ ~y;
12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	585 if ((ux & uy) < 0)
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	586 {
13734 28ddb3150943 Rename signbit to __signbit, until the problem is fixed in gnulib. Michael Goffioul <michael.goffioul@gmail.com> parents: 13012 diff changeset	587 u = octave_int_base<T>::max_val () + __signbit (~u);
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	588 }
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	589 return u;
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	590 #else
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	591 // We shall carefully avoid anything that may overflow.
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	592 T u;
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	593 if (y < 0)
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	594 {
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	595 if (x > octave_int_base<T>::max_val () + y)
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	596 {
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	597 u = octave_int_base<T>::max_val ();
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 else
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	600 u = x - y;
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	601 }
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	602 else
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	603 {
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	604 if (x < octave_int_base<T>::min_val () + y)
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	605 {
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	606 u = octave_int_base<T>::min_val ();
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	607 }
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	608 else
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	609 u = x - y;
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	610 }
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	611
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	612 return u;
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	613 #endif
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
8185 69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	616 // Multiplication is done using promotion to wider integer type. If there is
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	617 // no suitable promotion type, this operation MUST be specialized.
12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	618 static T
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	619 mul (T x, T y)
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	620 {
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	621 // Promotion type for multiplication (if exists).
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	622 typedef typename query_integer_type<2*sizeof (T), true>::type mptype;
14168 7ffd2a0791ef fix name lookup problem with static nested class John W. Eaton <jwe@octave.org> parents: 14138 diff changeset	623 return octave_int_base<T>::truncate_int (static_cast<mptype> (x)
7ffd2a0791ef fix name lookup problem with static nested class John W. Eaton <jwe@octave.org> parents: 14138 diff changeset	624 * static_cast<mptype> (y));
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	625 }
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 // Division.
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	628 static T
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	629 div (T x, T y)
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	630 {
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	631 T z;
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	632 if (y == 0)
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	633 {
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	634 if (x < 0)
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	635 z = octave_int_base<T>::min_val ();
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	636 else if (x != 0)
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	637 z = octave_int_base<T>::max_val ();
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	638 else
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	639 z = 0;
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	640 }
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	641 else if (y < 0)
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 // This is a special case that overflows as well.
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	644 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	645 {
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	646 z = octave_int_base<T>::max_val ();
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	647 }
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	648 else
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	649 {
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	650 z = x / y;
8293 ad5bb02d267a workaround missing std::abs(int64_t) in MSVC Jaroslav Hajek <highegg@gmail.com> parents: 8202 diff changeset	651 T w = -octave_int_abs (x % y); // Can't overflow, but std::abs (x) can!
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	652 if (w <= y - w)
13734 28ddb3150943 Rename signbit to __signbit, until the problem is fixed in gnulib. Michael Goffioul <michael.goffioul@gmail.com> parents: 13012 diff changeset	653 z -= 1 - (__signbit (x) << 1);
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	654 }
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	655 }
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	656 else
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	657 {
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	658 z = x / y;
8333 9238637cb81c style fixes John W. Eaton <jwe@octave.org> parents: 8319 diff changeset	659 // FIXME -- this is a workaround due to MSVC's absence of
9238637cb81c style fixes John W. Eaton <jwe@octave.org> parents: 8319 diff changeset	660 // 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	661 // overflow, but std::abs (x) can!
10312 cbc402e64d83 untabify liboctave header files John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	662 T w = octave_int_abs (x % y);
8333 9238637cb81c style fixes John W. Eaton <jwe@octave.org> parents: 8319 diff changeset	663
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	664 if (w >= y - w)
13734 28ddb3150943 Rename signbit to __signbit, until the problem is fixed in gnulib. Michael Goffioul <michael.goffioul@gmail.com> parents: 13012 diff changeset	665 z += 1 - (__signbit (x) << 1);
8169 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 return z;
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	668 }
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	669
10436 00219bdd2d17 implement built-in rem and mod Jaroslav Hajek <highegg@gmail.com> parents: 10405 diff changeset	670 // Remainder.
00219bdd2d17 implement built-in rem and mod Jaroslav Hajek <highegg@gmail.com> parents: 10405 diff changeset	671 static T
00219bdd2d17 implement built-in rem and mod Jaroslav Hajek <highegg@gmail.com> parents: 10405 diff changeset	672 rem (T x, T y)
00219bdd2d17 implement built-in rem and mod Jaroslav Hajek <highegg@gmail.com> parents: 10405 diff changeset	673 {
00219bdd2d17 implement built-in rem and mod Jaroslav Hajek <highegg@gmail.com> parents: 10405 diff changeset	674 return y != 0 ? x % y : 0;
00219bdd2d17 implement built-in rem and mod Jaroslav Hajek <highegg@gmail.com> parents: 10405 diff changeset	675 }
00219bdd2d17 implement built-in rem and mod Jaroslav Hajek <highegg@gmail.com> parents: 10405 diff changeset	676
00219bdd2d17 implement built-in rem and mod Jaroslav Hajek <highegg@gmail.com> parents: 10405 diff changeset	677 // Modulus. Note the weird y = 0 case for Matlab compatibility.
00219bdd2d17 implement built-in rem and mod Jaroslav Hajek <highegg@gmail.com> parents: 10405 diff changeset	678 static T
00219bdd2d17 implement built-in rem and mod Jaroslav Hajek <highegg@gmail.com> parents: 10405 diff changeset	679 mod (T x, T y)
00219bdd2d17 implement built-in rem and mod Jaroslav Hajek <highegg@gmail.com> parents: 10405 diff changeset	680 {
00219bdd2d17 implement built-in rem and mod Jaroslav Hajek <highegg@gmail.com> parents: 10405 diff changeset	681 if (y != 0)
00219bdd2d17 implement built-in rem and mod Jaroslav Hajek <highegg@gmail.com> parents: 10405 diff changeset	682 {
00219bdd2d17 implement built-in rem and mod Jaroslav Hajek <highegg@gmail.com> parents: 10405 diff changeset	683 T r = x % y;
00219bdd2d17 implement built-in rem and mod Jaroslav Hajek <highegg@gmail.com> parents: 10405 diff changeset	684 return ((r < 0) != (y < 0)) ? r + y : r;
00219bdd2d17 implement built-in rem and mod Jaroslav Hajek <highegg@gmail.com> parents: 10405 diff changeset	685 }
00219bdd2d17 implement built-in rem and mod Jaroslav Hajek <highegg@gmail.com> parents: 10405 diff changeset	686 else
00219bdd2d17 implement built-in rem and mod Jaroslav Hajek <highegg@gmail.com> parents: 10405 diff changeset	687 return x;
00219bdd2d17 implement built-in rem and mod Jaroslav Hajek <highegg@gmail.com> parents: 10405 diff changeset	688 }
7521 6f10bbb2854a avoid some GCC warnings for unsigned comparisons John W. Eaton <jwe@octave.org> parents: 7503 diff changeset	689 };
6f10bbb2854a avoid some GCC warnings for unsigned comparisons John W. Eaton <jwe@octave.org> parents: 7503 diff changeset	690
8185 69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	691 #ifdef OCTAVE_INT_USE_LONG_DOUBLE
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	692 // Handle 64-bit multiply using long double
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	693 template <>
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	694 inline int64_t
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	695 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	696 {
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	697 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	698 // 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	699 // 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	700 // really be faster.
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	701 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	702 {
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	703 return octave_int_base<int64_t>::max_val ();
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	704 }
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	705 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	706 {
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	707 return octave_int_base<int64_t>::min_val ();
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	708 }
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	709 else
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	710 return static_cast<int64_t> (p);
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	711 }
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	712 #else
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	713 // Special handler for 64-bit integer multiply.
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	714 template <>
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	715 OCTAVE_API int64_t
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	716 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	717 #endif
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	718
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	719 // This class simply selects the proper arithmetics.
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	720 template<class T>
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	721 class octave_int_arith
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	722 : 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	723 {};
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	724
4902 bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	725 template <class T>
bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	726 class
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	727 octave_int : public octave_int_base<T>
4902 bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	728 {
bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	729 public:
4943 1a499d0c58f5 [project @ 2004-08-31 00:51:31 by jwe] jwe parents: 4920 diff changeset	730 typedef T val_type;
1a499d0c58f5 [project @ 2004-08-31 00:51:31 by jwe] jwe parents: 4920 diff changeset	731
4902 bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	732 octave_int (void) : ival () { }
bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	733
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	734 octave_int (T i) : ival (i) { }
4902 bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	735
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	736 octave_int (double d) : ival (octave_int_base<T>::convert_real (d)) { }
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	737
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	738 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	739
8185 69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	740 #ifdef OCTAVE_INT_USE_LONG_DOUBLE
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	741 octave_int (long double d) : ival (octave_int_base<T>::convert_real (d)) { }
8185 69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	742 #endif
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	743
4902 bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	744 octave_int (bool b) : ival (b) { }
bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	745
bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	746 template <class U>
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	747 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	748
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	749 template <class U>
4902 bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	750 octave_int (const octave_int<U>& i)
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	751 : ival (octave_int_base<T>::truncate_int (i.value ())) { }
4902 bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	752
bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	753 octave_int (const octave_int<T>& i) : ival (i.ival) { }
bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	754
bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	755 octave_int& operator = (const octave_int<T>& i)
bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	756 {
bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	757 ival = i.ival;
bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	758 return *this;
bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	759 }
bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	760
bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	761 T value (void) const { return ival; }
bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	762
4949 f6b63ff1119b [project @ 2004-08-31 19:17:44 by jwe] jwe parents: 4943 diff changeset	763 const unsigned char * iptr (void) const
f6b63ff1119b [project @ 2004-08-31 19:17:44 by jwe] jwe parents: 4943 diff changeset	764 { return reinterpret_cast<const unsigned char *> (& ival); }
f6b63ff1119b [project @ 2004-08-31 19:17:44 by jwe] jwe parents: 4943 diff changeset	765
4902 bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	766 bool operator ! (void) const { return ! ival; }
bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	767
7198 4555c116b420 [project @ 2007-11-27 03:06:10 by jwe] jwe parents: 7177 diff changeset	768 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	769
4555c116b420 [project @ 2007-11-27 03:06:10 by jwe] jwe parents: 7177 diff changeset	770 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	771
4555c116b420 [project @ 2007-11-27 03:06:10 by jwe] jwe parents: 7177 diff changeset	772 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	773
4555c116b420 [project @ 2007-11-27 03:06:10 by jwe] jwe parents: 7177 diff changeset	774 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	775
7177 57d2546ad8d5 [project @ 2007-11-14 22:21:35 by jwe] jwe parents: 7017 diff changeset	776 operator T (void) const { return value (); }
57d2546ad8d5 [project @ 2007-11-14 22:21:35 by jwe] jwe parents: 7017 diff changeset	777
7198 4555c116b420 [project @ 2007-11-27 03:06:10 by jwe] jwe parents: 7177 diff changeset	778 // char and bool operators intentionally omitted.
5533 667ad2becb63 [project @ 2005-11-10 21:40:48 by jwe] jwe parents: 5420 diff changeset	779
7198 4555c116b420 [project @ 2007-11-27 03:06:10 by jwe] jwe parents: 7177 diff changeset	780 operator double (void) const { return double_value (); }
4902 bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	781
7198 4555c116b420 [project @ 2007-11-27 03:06:10 by jwe] jwe parents: 7177 diff changeset	782 operator float (void) const { return float_value (); }
5030 160365410ad4 [project @ 2004-09-24 03:22:23 by jwe] jwe parents: 5029 diff changeset	783
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	784 octave_int<T>
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	785 operator + () const
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	786 { return *this; }
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	787
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	788 // unary operators & mappers
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	789 #define OCTAVE_INT_UN_OP(OPNAME,NAME) \
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	790 inline octave_int<T> \
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	791 OPNAME () const \
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	792 { return octave_int_arith<T>::NAME (ival); }
4902 bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	793
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	794 OCTAVE_INT_UN_OP(operator -, minus)
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	795 OCTAVE_INT_UN_OP(abs, abs)
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	796 OCTAVE_INT_UN_OP(signum, signum)
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	797
8185 69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	798 #undef OCTAVE_INT_UN_OP
4902 bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	799
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	800 // Homogeneous binary integer operations.
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	801 #define OCTAVE_INT_BIN_OP(OP, NAME, ARGT) \
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	802 inline octave_int<T> \
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	803 operator OP (const ARGT& y) const \
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	804 { return octave_int_arith<T>::NAME (ival, y); } \
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	805 inline octave_int<T>& \
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	806 operator OP##= (const ARGT& y) \
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	807 { \
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	808 ival = octave_int_arith<T>::NAME (ival, y); \
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	809 return *this; \
4952 bfd57b466752 [project @ 2004-09-01 00:49:05 by jwe] jwe parents: 4949 diff changeset	810 }
bfd57b466752 [project @ 2004-09-01 00:49:05 by jwe] jwe parents: 4949 diff changeset	811
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	812 OCTAVE_INT_BIN_OP(+, add, octave_int<T>)
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	813 OCTAVE_INT_BIN_OP(-, sub, octave_int<T>)
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	814 OCTAVE_INT_BIN_OP(*, mul, octave_int<T>)
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	815 OCTAVE_INT_BIN_OP(/, div, octave_int<T>)
10436 00219bdd2d17 implement built-in rem and mod Jaroslav Hajek <highegg@gmail.com> parents: 10405 diff changeset	816 OCTAVE_INT_BIN_OP(%, rem, octave_int<T>)
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	817 OCTAVE_INT_BIN_OP(<<, lshift, int)
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	818 OCTAVE_INT_BIN_OP(>>, rshift, int)
4952 bfd57b466752 [project @ 2004-09-01 00:49:05 by jwe] jwe parents: 4949 diff changeset	819
8185 69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	820 #undef OCTAVE_INT_BIN_OP
7503 8c32f95c2639 convert mapper functions to new format David Bateman <dbateman@free.fr> parents: 7198 diff changeset	821
8185 69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	822 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	823 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	824
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	825 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	826
15018 3d8ace26c5b4 maint: Use Octave coding conventions for cuddled parentheses in liboctave/. Rik <rik@octave.org> parents: 14168 diff changeset	827 static int byte_size (void) { return sizeof (T); }
4949 f6b63ff1119b [project @ 2004-08-31 19:17:44 by jwe] jwe parents: 4943 diff changeset	828
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	829 static const char *type_name ();
7997 2b8952e133c9 implement checked conversions between integers Jaroslav Hajek <highegg@gmail.com> parents: 7922 diff changeset	830
8185 69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	831 // The following are provided for convenience.
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	832 static const octave_int zero, one;
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	833
5900 c20eb7330d13 [project @ 2006-07-22 08:31:16 by jwe] jwe parents: 5898 diff changeset	834 // Unsafe. This function exists to support the MEX interface.
c20eb7330d13 [project @ 2006-07-22 08:31:16 by jwe] jwe parents: 5898 diff changeset	835 // You should not use it anywhere else.
c20eb7330d13 [project @ 2006-07-22 08:31:16 by jwe] jwe parents: 5898 diff changeset	836 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	837
4902 bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	838 private:
bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	839
bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	840 T ival;
bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	841 };
bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	842
10436 00219bdd2d17 implement built-in rem and mod Jaroslav Hajek <highegg@gmail.com> parents: 10405 diff changeset	843 template <class T>
00219bdd2d17 implement built-in rem and mod Jaroslav Hajek <highegg@gmail.com> parents: 10405 diff changeset	844 inline octave_int<T>
00219bdd2d17 implement built-in rem and mod Jaroslav Hajek <highegg@gmail.com> parents: 10405 diff changeset	845 rem (const octave_int<T>& x, const octave_int<T>& y)
00219bdd2d17 implement built-in rem and mod Jaroslav Hajek <highegg@gmail.com> parents: 10405 diff changeset	846 { return octave_int_arith<T>::rem (x.value (), y.value ()); }
00219bdd2d17 implement built-in rem and mod Jaroslav Hajek <highegg@gmail.com> parents: 10405 diff changeset	847
00219bdd2d17 implement built-in rem and mod Jaroslav Hajek <highegg@gmail.com> parents: 10405 diff changeset	848 template <class T>
00219bdd2d17 implement built-in rem and mod Jaroslav Hajek <highegg@gmail.com> parents: 10405 diff changeset	849 inline octave_int<T>
00219bdd2d17 implement built-in rem and mod Jaroslav Hajek <highegg@gmail.com> parents: 10405 diff changeset	850 mod (const octave_int<T>& x, const octave_int<T>& y)
00219bdd2d17 implement built-in rem and mod Jaroslav Hajek <highegg@gmail.com> parents: 10405 diff changeset	851 { return octave_int_arith<T>::mod (x.value (), y.value ()); }
00219bdd2d17 implement built-in rem and mod Jaroslav Hajek <highegg@gmail.com> parents: 10405 diff changeset	852
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	853 // No mixed integer binary operations!
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	854
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	855 template <class T>
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	856 inline bool
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	857 xisnan (const octave_int<T>&)
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	858 { return false; }
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	859
8333 9238637cb81c style fixes John W. Eaton <jwe@octave.org> parents: 8319 diff changeset	860 // FIXME -- can/should any of these be inline?
7997 2b8952e133c9 implement checked conversions between integers Jaroslav Hajek <highegg@gmail.com> parents: 7922 diff changeset	861
4902 bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	862 template <class T>
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	863 extern OCTAVE_API octave_int<T>
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	864 pow (const octave_int<T>&, const octave_int<T>&);
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	865
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	866 template <class T>
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	867 extern OCTAVE_API octave_int<T>
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	868 pow (const double& a, const octave_int<T>& b);
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	869
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	870 template <class T>
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	871 extern OCTAVE_API octave_int<T>
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	872 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	873
935be827eaf8 error for NaN values in & and \| expressions John W. Eaton <jwe@octave.org> parents: 7789 diff changeset	874 template <class T>
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	875 extern OCTAVE_API octave_int<T>
13012 15eefbd9d4e8 Implement a few missing automatic bsxfun power operators Jordi Gutiérrez Hermoso <jordigh@gmail.com> parents: 11586 diff changeset	876 pow (const float& a, const octave_int<T>& b);
15eefbd9d4e8 Implement a few missing automatic bsxfun power operators Jordi Gutiérrez Hermoso <jordigh@gmail.com> parents: 11586 diff changeset	877
15eefbd9d4e8 Implement a few missing automatic bsxfun power operators Jordi Gutiérrez Hermoso <jordigh@gmail.com> parents: 11586 diff changeset	878 template <class T>
15eefbd9d4e8 Implement a few missing automatic bsxfun power operators Jordi Gutiérrez Hermoso <jordigh@gmail.com> parents: 11586 diff changeset	879 extern OCTAVE_API octave_int<T>
15eefbd9d4e8 Implement a few missing automatic bsxfun power operators Jordi Gutiérrez Hermoso <jordigh@gmail.com> parents: 11586 diff changeset	880 pow (const octave_int<T>& a, const float& b);
15eefbd9d4e8 Implement a few missing automatic bsxfun power operators Jordi Gutiérrez Hermoso <jordigh@gmail.com> parents: 11586 diff changeset	881
15eefbd9d4e8 Implement a few missing automatic bsxfun power operators Jordi Gutiérrez Hermoso <jordigh@gmail.com> parents: 11586 diff changeset	882 // FIXME: Do we really need a differently named single-precision
15eefbd9d4e8 Implement a few missing automatic bsxfun power operators Jordi Gutiérrez Hermoso <jordigh@gmail.com> parents: 11586 diff changeset	883 // function integer power function here instead of an overloaded
15eefbd9d4e8 Implement a few missing automatic bsxfun power operators Jordi Gutiérrez Hermoso <jordigh@gmail.com> parents: 11586 diff changeset	884 // one?
15eefbd9d4e8 Implement a few missing automatic bsxfun power operators Jordi Gutiérrez Hermoso <jordigh@gmail.com> parents: 11586 diff changeset	885 template <class T>
15eefbd9d4e8 Implement a few missing automatic bsxfun power operators Jordi Gutiérrez Hermoso <jordigh@gmail.com> parents: 11586 diff changeset	886 extern OCTAVE_API octave_int<T>
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	887 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	888
bfd57b466752 [project @ 2004-09-01 00:49:05 by jwe] jwe parents: 4949 diff changeset	889 template <class T>
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	890 extern OCTAVE_API octave_int<T>
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	891 powf (const octave_int<T>& a, const float& b);
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	892
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	893 // Binary relations
4953 7a3a480e8645 [project @ 2004-09-01 21:10:28 by jwe] jwe parents: 4952 diff changeset	894
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	895 #define OCTAVE_INT_CMP_OP(OP, NAME) \
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	896 template<class T1, class T2> \
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	897 inline bool \
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	898 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	899 { 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	900 (x.value (), y.value ()); }
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	901
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	902 OCTAVE_INT_CMP_OP (<, lt)
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	903 OCTAVE_INT_CMP_OP (<=, le)
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	904 OCTAVE_INT_CMP_OP (>, gt)
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	905 OCTAVE_INT_CMP_OP (>=, ge)
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	906 OCTAVE_INT_CMP_OP (==, eq)
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	907 OCTAVE_INT_CMP_OP (!=, ne)
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	908
8185 69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	909 #undef OCTAVE_INT_CMP_OP
4953 7a3a480e8645 [project @ 2004-09-01 21:10:28 by jwe] jwe parents: 4952 diff changeset	910
7a3a480e8645 [project @ 2004-09-01 21:10:28 by jwe] jwe parents: 4952 diff changeset	911 template <class T>
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	912 inline std::ostream&
4902 bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	913 operator << (std::ostream& os, const octave_int<T>& ival)
bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	914 {
bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	915 os << ival.value ();
bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	916 return os;
bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	917 }
bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	918
bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	919 template <class T>
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	920 inline std::istream&
4902 bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	921 operator >> (std::istream& is, octave_int<T>& ival)
bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	922 {
bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	923 T tmp = 0;
bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	924 is >> tmp;
bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	925 ival = tmp;
bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	926 return is;
bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	927 }
bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	928
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	929 // Bitwise operations
7789 82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7598 diff changeset	930
4906 6754342ef7ad [project @ 2004-06-23 11:11:50 by jwe] jwe parents: 4902 diff changeset	931 #define OCTAVE_INT_BITCMP_OP(OP) \
6754342ef7ad [project @ 2004-06-23 11:11:50 by jwe] jwe parents: 4902 diff changeset	932 template <class T> \
6754342ef7ad [project @ 2004-06-23 11:11:50 by jwe] jwe parents: 4902 diff changeset	933 octave_int<T> \
6754342ef7ad [project @ 2004-06-23 11:11:50 by jwe] jwe parents: 4902 diff changeset	934 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	935 { return x.value () OP y.value (); }
4906 6754342ef7ad [project @ 2004-06-23 11:11:50 by jwe] jwe parents: 4902 diff changeset	936
6754342ef7ad [project @ 2004-06-23 11:11:50 by jwe] jwe parents: 4902 diff changeset	937 OCTAVE_INT_BITCMP_OP (&)
6754342ef7ad [project @ 2004-06-23 11:11:50 by jwe] jwe parents: 4902 diff changeset	938 OCTAVE_INT_BITCMP_OP (\|)
6754342ef7ad [project @ 2004-06-23 11:11:50 by jwe] jwe parents: 4902 diff changeset	939 OCTAVE_INT_BITCMP_OP (^)
6754342ef7ad [project @ 2004-06-23 11:11:50 by jwe] jwe parents: 4902 diff changeset	940
8185 69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	941 #undef OCTAVE_INT_BITCMP_OP
4906 6754342ef7ad [project @ 2004-06-23 11:11:50 by jwe] jwe parents: 4902 diff changeset	942
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	943 // General bit shift.
4909 5c9e36402f17 [project @ 2004-07-12 17:08:24 by jwe] jwe parents: 4906 diff changeset	944 template <class T>
5c9e36402f17 [project @ 2004-07-12 17:08:24 by jwe] jwe parents: 4906 diff changeset	945 octave_int<T>
4920 b22a7a1db0d5 [project @ 2004-07-27 18:15:25 by jwe] jwe parents: 4919 diff changeset	946 bitshift (const octave_int<T>& a, int n,
10312 cbc402e64d83 untabify liboctave header files John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	947 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	948 {
5c9e36402f17 [project @ 2004-07-12 17:08:24 by jwe] jwe parents: 4906 diff changeset	949 if (n > 0)
4952 bfd57b466752 [project @ 2004-09-01 00:49:05 by jwe] jwe parents: 4949 diff changeset	950 return (a << n) & mask;
4909 5c9e36402f17 [project @ 2004-07-12 17:08:24 by jwe] jwe parents: 4906 diff changeset	951 else if (n < 0)
4952 bfd57b466752 [project @ 2004-09-01 00:49:05 by jwe] jwe parents: 4949 diff changeset	952 return (a >> -n) & mask;
4909 5c9e36402f17 [project @ 2004-07-12 17:08:24 by jwe] jwe parents: 4906 diff changeset	953 else
8963 d1eab3ddb02d oct-inttypes.h (bitshift): apply mask even if not shifting John W. Eaton <jwe@octave.org> parents: 8950 diff changeset	954 return a & mask;
4909 5c9e36402f17 [project @ 2004-07-12 17:08:24 by jwe] jwe parents: 4906 diff changeset	955 }
5c9e36402f17 [project @ 2004-07-12 17:08:24 by jwe] jwe parents: 4906 diff changeset	956
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	957 typedef octave_int<int8_t> octave_int8;
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	958 typedef octave_int<int16_t> octave_int16;
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	959 typedef octave_int<int32_t> octave_int32;
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	960 typedef octave_int<int64_t> octave_int64;
4902 bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	961
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	962 typedef octave_int<uint8_t> octave_uint8;
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	963 typedef octave_int<uint16_t> octave_uint16;
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	964 typedef octave_int<uint32_t> octave_uint32;
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	965 typedef octave_int<uint64_t> octave_uint64;
5072 97b62f0c1bee [project @ 2004-11-09 05:51:30 by jwe] jwe parents: 5030 diff changeset	966
8185 69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	967 #define OCTAVE_INT_DOUBLE_BIN_OP0(OP) \
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	968 template <class T> \
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	969 inline octave_int<T> \
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	970 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	971 { 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	972 template <class T> \
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	973 inline octave_int<T> \
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	974 operator OP (const double& x, const octave_int<T>& y) \
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	975 { return octave_int<T> (x OP static_cast<double> (y)); } \
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	976
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	977 #ifdef OCTAVE_INT_USE_LONG_DOUBLE
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	978 // Handle mixed op using long double
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	979 #define OCTAVE_INT_DOUBLE_BIN_OP(OP) \
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	980 OCTAVE_INT_DOUBLE_BIN_OP0(OP) \
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	981 template <> \
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	982 inline octave_int64 \
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	983 operator OP (const double& x, const octave_int64& y) \
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	984 { 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	985 template <> \
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	986 inline octave_uint64 \
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	987 operator OP (const double& x, const octave_uint64& y) \
8191 9cb73236e552 fix uint64 mixed operations Jaroslav Hajek <highegg@gmail.com> parents: 8185 diff changeset	988 { 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	989 template <> \
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	990 inline octave_int64 \
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	991 operator OP (const octave_int64& x, const double& y) \
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	992 { 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	993 template <> \
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	994 inline octave_uint64 \
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	995 operator OP (const octave_uint64& x, const double& y) \
8191 9cb73236e552 fix uint64 mixed operations Jaroslav Hajek <highegg@gmail.com> parents: 8185 diff changeset	996 { 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	997
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	998 #else
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	999 // external handlers
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	1000 #define OCTAVE_INT_DOUBLE_BIN_OP(OP) \
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	1001 OCTAVE_INT_DOUBLE_BIN_OP0(OP) \
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	1002 template <> \
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	1003 OCTAVE_API octave_int64 \
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	1004 operator OP (const double&, const octave_int64&); \
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	1005 template <> \
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	1006 OCTAVE_API octave_uint64 \
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	1007 operator OP (const double&, const octave_uint64&); \
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	1008 template <> \
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	1009 OCTAVE_API octave_int64 \
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	1010 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	1011 template <> \
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	1012 OCTAVE_API octave_uint64 \
8185 69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	1013 operator OP (const octave_uint64&, const double&);
5072 97b62f0c1bee [project @ 2004-11-09 05:51:30 by jwe] jwe parents: 5030 diff changeset	1014
8185 69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	1015 #endif
5072 97b62f0c1bee [project @ 2004-11-09 05:51:30 by jwe] jwe parents: 5030 diff changeset	1016
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	1017 OCTAVE_INT_DOUBLE_BIN_OP (+)
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	1018 OCTAVE_INT_DOUBLE_BIN_OP (-)
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	1019 OCTAVE_INT_DOUBLE_BIN_OP (*)
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	1020 OCTAVE_INT_DOUBLE_BIN_OP (/)
5072 97b62f0c1bee [project @ 2004-11-09 05:51:30 by jwe] jwe parents: 5030 diff changeset	1021
8185 69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	1022 #undef OCTAVE_INT_DOUBLE_BIN_OP0
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	1023 #undef OCTAVE_INT_DOUBLE_BIN_OP
5072 97b62f0c1bee [project @ 2004-11-09 05:51:30 by jwe] jwe parents: 5030 diff changeset	1024
8185 69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	1025 #define OCTAVE_INT_DOUBLE_CMP_OP(OP,NAME) \
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	1026 template <class T> \
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	1027 inline bool \
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	1028 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	1029 { 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	1030 template <class T> \
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	1031 inline bool \
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	1032 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	1033 { 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	1034
8185 69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	1035 OCTAVE_INT_DOUBLE_CMP_OP (<, lt)
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	1036 OCTAVE_INT_DOUBLE_CMP_OP (<=, le)
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	1037 OCTAVE_INT_DOUBLE_CMP_OP (>=, ge)
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	1038 OCTAVE_INT_DOUBLE_CMP_OP (>, gt)
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	1039 OCTAVE_INT_DOUBLE_CMP_OP (==, eq)
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	1040 OCTAVE_INT_DOUBLE_CMP_OP (!=, ne)
5072 97b62f0c1bee [project @ 2004-11-09 05:51:30 by jwe] jwe parents: 5030 diff changeset	1041
8185 69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	1042 #undef OCTAVE_INT_DOUBLE_CMP_OP
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	1043
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	1044 // Floats are handled by simply converting to doubles.
5072 97b62f0c1bee [project @ 2004-11-09 05:51:30 by jwe] jwe parents: 5030 diff changeset	1045
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	1046 #define OCTAVE_INT_FLOAT_BIN_OP(OP) \
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	1047 template <class T> \
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	1048 inline octave_int<T> \
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	1049 operator OP (const octave_int<T>& x, float y) \
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	1050 { return x OP static_cast<double> (y); } \
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	1051 template <class T> \
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	1052 inline octave_int<T> \
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	1053 operator OP (float x, const octave_int<T>& y) \
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	1054 { return static_cast<double> (x) OP y; }
5072 97b62f0c1bee [project @ 2004-11-09 05:51:30 by jwe] jwe parents: 5030 diff changeset	1055
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	1056 OCTAVE_INT_FLOAT_BIN_OP (+)
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	1057 OCTAVE_INT_FLOAT_BIN_OP (-)
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	1058 OCTAVE_INT_FLOAT_BIN_OP (*)
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	1059 OCTAVE_INT_FLOAT_BIN_OP (/)
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	1060
8185 69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	1061 #undef OCTAVE_INT_FLOAT_BIN_OP
5072 97b62f0c1bee [project @ 2004-11-09 05:51:30 by jwe] jwe parents: 5030 diff changeset	1062
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	1063 #define OCTAVE_INT_FLOAT_CMP_OP(OP) \
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	1064 template <class T> \
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	1065 inline bool \
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	1066 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	1067 { return x OP static_cast<double> (y); } \
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	1068 template <class T> \
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	1069 bool \
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	1070 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	1071 { return static_cast<double> (x) OP y; }
4902 bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	1072
8169 66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	1073 OCTAVE_INT_FLOAT_CMP_OP (<)
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	1074 OCTAVE_INT_FLOAT_CMP_OP (<=)
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	1075 OCTAVE_INT_FLOAT_CMP_OP (>=)
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	1076 OCTAVE_INT_FLOAT_CMP_OP (>)
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	1077 OCTAVE_INT_FLOAT_CMP_OP (==)
66bc6f9b4f72 rewrite integer arithmetics and conversions Jaroslav Hajek <highegg@gmail.com> parents: 8104 diff changeset	1078 OCTAVE_INT_FLOAT_CMP_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_CMP_OP
69c5cce38c29 implement 64-bit arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8169 diff changeset	1081
9743 26abff55f6fe optimize bsxfun for common built-in operations Jaroslav Hajek <highegg@gmail.com> parents: 9648 diff changeset	1082 template <class T>
26abff55f6fe optimize bsxfun for common built-in operations Jaroslav Hajek <highegg@gmail.com> parents: 9648 diff changeset	1083 octave_int<T>
26abff55f6fe optimize bsxfun for common built-in operations Jaroslav Hajek <highegg@gmail.com> parents: 9648 diff changeset	1084 xmax (const octave_int<T>& x, const octave_int<T>& y)
26abff55f6fe optimize bsxfun for common built-in operations Jaroslav Hajek <highegg@gmail.com> parents: 9648 diff changeset	1085 {
26abff55f6fe optimize bsxfun for common built-in operations Jaroslav Hajek <highegg@gmail.com> parents: 9648 diff changeset	1086 const T xv = x.value (), yv = y.value ();
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	1087 return octave_int<T> (xv >= yv ? xv : yv);
9743 26abff55f6fe optimize bsxfun for common built-in operations Jaroslav Hajek <highegg@gmail.com> parents: 9648 diff changeset	1088 }
26abff55f6fe optimize bsxfun for common built-in operations Jaroslav Hajek <highegg@gmail.com> parents: 9648 diff changeset	1089
26abff55f6fe optimize bsxfun for common built-in operations Jaroslav Hajek <highegg@gmail.com> parents: 9648 diff changeset	1090 template <class T>
26abff55f6fe optimize bsxfun for common built-in operations Jaroslav Hajek <highegg@gmail.com> parents: 9648 diff changeset	1091 octave_int<T>
26abff55f6fe optimize bsxfun for common built-in operations Jaroslav Hajek <highegg@gmail.com> parents: 9648 diff changeset	1092 xmin (const octave_int<T>& x, const octave_int<T>& y)
26abff55f6fe optimize bsxfun for common built-in operations Jaroslav Hajek <highegg@gmail.com> parents: 9648 diff changeset	1093 {
26abff55f6fe optimize bsxfun for common built-in operations Jaroslav Hajek <highegg@gmail.com> parents: 9648 diff changeset	1094 const T xv = x.value (), yv = y.value ();
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	1095 return octave_int<T> (xv <= yv ? xv : yv);
9743 26abff55f6fe optimize bsxfun for common built-in operations Jaroslav Hajek <highegg@gmail.com> parents: 9648 diff changeset	1096 }
26abff55f6fe optimize bsxfun for common built-in operations Jaroslav Hajek <highegg@gmail.com> parents: 9648 diff changeset	1097
4902 bd043a433918 [project @ 2004-06-14 18:46:20 by jwe] jwe parents: diff changeset	1098 #endif

Mercurial > octave

annotate liboctave/util/oct-inttypes.h @ 17744:d63878346099