octave: liboctave/array/Range.cc annotate

annotate liboctave/array/Range.cc @ 21229:a83e7a384ee0

create and install a subset of config.h in octave-config.h * mk-octave-config-h.sh: New file. * Makefile.am (EXTRA_DIST): Add mk-octave-config.h.sh to the list. (octinclude_HEADERS): Add octave-config.h to the list. (octave-config.h): New rule. * common.mk (do_subst_config_vals, do_subst_cross_config_vals): Don't substitute unused ENABLE options. * configure.ac: Note the reason for using oct-conf-post.in.h. Add OCTAVE_ prefix to ENABLE_BOUNDS_CHECK ENABLE_ATOMIC_REFCOUNT, ENABLE_64, ENABLE_OPENMP, and ENABLE_FLOAT_TRUNCATE in calls to AC_DEFINE. Change all uses. * oct-conf-post.in.h: Define HAVE_OCTAVE_DEPRECATED_ATTR instead of HAVE_ATTR_DEPRECATED. Likewise for HAVE_ATTR_NORETURN and HAVE_ATTR_UNUSED. Change all uses.

author	John W. Eaton <jwe@octave.org>
date	Mon, 08 Feb 2016 17:30:29 -0500
parents	f7121e111991
children	40de9f8f23a6

rev	line source
3 9a4c07481e61 [project @ 1993-08-08 01:20:23 by jwe] jwe parents: diff changeset	1 /*
9a4c07481e61 [project @ 1993-08-08 01:20:23 by jwe] jwe parents: diff changeset	2
19697 4197fc428c7d maint: Update copyright notices for 2015. John W. Eaton <jwe@octave.org> parents: 18852 diff changeset	3 Copyright (C) 1993-2015 John W. Eaton
3 9a4c07481e61 [project @ 1993-08-08 01:20:23 by jwe] jwe parents: diff changeset	4
9a4c07481e61 [project @ 1993-08-08 01:20:23 by jwe] jwe parents: diff changeset	5 This file is part of Octave.
9a4c07481e61 [project @ 1993-08-08 01:20:23 by jwe] jwe parents: diff changeset	6
9a4c07481e61 [project @ 1993-08-08 01:20:23 by jwe] jwe parents: diff changeset	7 Octave is free software; you can redistribute it and/or modify it
9a4c07481e61 [project @ 1993-08-08 01:20:23 by jwe] jwe parents: diff changeset	8 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: 6490 diff changeset	9 Free Software Foundation; either version 3 of the License, or (at your
93c65f2a5668 [project @ 2007-10-12 06:40:56 by jwe] jwe parents: 6490 diff changeset	10 option) any later version.
3 9a4c07481e61 [project @ 1993-08-08 01:20:23 by jwe] jwe parents: diff changeset	11
9a4c07481e61 [project @ 1993-08-08 01:20:23 by jwe] jwe parents: diff changeset	12 Octave is distributed in the hope that it will be useful, but WITHOUT
9a4c07481e61 [project @ 1993-08-08 01:20:23 by jwe] jwe parents: diff changeset	13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
9a4c07481e61 [project @ 1993-08-08 01:20:23 by jwe] jwe parents: diff changeset	14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
9a4c07481e61 [project @ 1993-08-08 01:20:23 by jwe] jwe parents: diff changeset	15 for more details.
9a4c07481e61 [project @ 1993-08-08 01:20:23 by jwe] jwe parents: diff changeset	16
9a4c07481e61 [project @ 1993-08-08 01:20:23 by jwe] jwe parents: diff changeset	17 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: 6490 diff changeset	18 along with Octave; see the file COPYING. If not, see
93c65f2a5668 [project @ 2007-10-12 06:40:56 by jwe] jwe parents: 6490 diff changeset	19 <http://www.gnu.org/licenses/>.
3 9a4c07481e61 [project @ 1993-08-08 01:20:23 by jwe] jwe parents: diff changeset	20
9a4c07481e61 [project @ 1993-08-08 01:20:23 by jwe] jwe parents: diff changeset	21 */
9a4c07481e61 [project @ 1993-08-08 01:20:23 by jwe] jwe parents: diff changeset	22
238 780cbbc57b7c [project @ 1993-11-30 20:23:04 by jwe] jwe parents: 208 diff changeset	23 #ifdef HAVE_CONFIG_H
21202 f7121e111991 maint: indent #ifdef blocks in liboctave and src directories. Rik <rik@octave.org> parents: 21131 diff changeset	24 # include <config.h>
3 9a4c07481e61 [project @ 1993-08-08 01:20:23 by jwe] jwe parents: diff changeset	25 #endif
9a4c07481e61 [project @ 1993-08-08 01:20:23 by jwe] jwe parents: diff changeset	26
1546 a272c4056bab [project @ 1995-10-07 03:38:40 by jwe] jwe parents: 1367 diff changeset	27 #include <cfloat>
1367 9f9131a8d706 [project @ 1995-09-06 00:07:03 by jwe] jwe parents: 1360 diff changeset	28
3503 d14c483b3c12 [project @ 2000-02-01 04:06:07 by jwe] jwe parents: 2847 diff changeset	29 #include <iostream>
6490 0ad7655cf2bc [project @ 2007-04-05 02:44:34 by jwe] jwe parents: 6457 diff changeset	30 #include <limits>
3 9a4c07481e61 [project @ 1993-08-08 01:20:23 by jwe] jwe parents: diff changeset	31
9a4c07481e61 [project @ 1993-08-08 01:20:23 by jwe] jwe parents: diff changeset	32 #include "Range.h"
7458 1032e24f199f make sort work for ranges John W. Eaton <jwe@octave.org> parents: 7231 diff changeset	33 #include "lo-error.h"
2383 096529066838 [project @ 1996-10-12 17:50:47 by jwe] jwe parents: 1993 diff changeset	34 #include "lo-mappers.h"
7231 2eb392d058bb [project @ 2007-11-30 18:53:29 by jwe] jwe parents: 7017 diff changeset	35 #include "lo-math.h"
2383 096529066838 [project @ 1996-10-12 17:50:47 by jwe] jwe parents: 1993 diff changeset	36 #include "lo-utils.h"
10366 e5ae13b8b2c2 improve Array indexing error messages Jaroslav Hajek <highegg@gmail.com> parents: 10314 diff changeset	37 #include "Array-util.h"
2383 096529066838 [project @ 1996-10-12 17:50:47 by jwe] jwe parents: 1993 diff changeset	38
096529066838 [project @ 1996-10-12 17:50:47 by jwe] jwe parents: 1993 diff changeset	39 bool
096529066838 [project @ 1996-10-12 17:50:47 by jwe] jwe parents: 1993 diff changeset	40 Range::all_elements_are_ints (void) const
096529066838 [project @ 1996-10-12 17:50:47 by jwe] jwe parents: 1993 diff changeset	41 {
096529066838 [project @ 1996-10-12 17:50:47 by jwe] jwe parents: 1993 diff changeset	42 // If the base and increment are ints, the final value in the range
6457 a58b5981ab65 [project @ 2007-03-26 16:51:46 by jwe] jwe parents: 5307 diff changeset	43 // will also be an integer, even if the limit is not. If there is one
a58b5981ab65 [project @ 2007-03-26 16:51:46 by jwe] jwe parents: 5307 diff changeset	44 // or fewer elements only the base needs to be an integer
2383 096529066838 [project @ 1996-10-12 17:50:47 by jwe] jwe parents: 1993 diff changeset	45
096529066838 [project @ 1996-10-12 17:50:47 by jwe] jwe parents: 1993 diff changeset	46 return (! (xisnan (rng_base) \|\| xisnan (rng_inc))
20228 00cf2847355d Deprecate Array::nelem() and Range::nelem() in favour of ::numel(). Carnë Draug <carandraug@octave.org> parents: 19697 diff changeset	47 && (NINTbig (rng_base) == rng_base \|\| rng_numel < 1)
00cf2847355d Deprecate Array::nelem() and Range::nelem() in favour of ::numel(). Carnë Draug <carandraug@octave.org> parents: 19697 diff changeset	48 && (NINTbig (rng_inc) == rng_inc \|\| rng_numel <= 1));
2383 096529066838 [project @ 1996-10-12 17:50:47 by jwe] jwe parents: 1993 diff changeset	49 }
645 21cb3c7dc9e3 [project @ 1994-08-24 06:19:54 by jwe] jwe parents: 461 diff changeset	50
21cb3c7dc9e3 [project @ 1994-08-24 06:19:54 by jwe] jwe parents: 461 diff changeset	51 Matrix
21cb3c7dc9e3 [project @ 1994-08-24 06:19:54 by jwe] jwe parents: 461 diff changeset	52 Range::matrix_value (void) const
21cb3c7dc9e3 [project @ 1994-08-24 06:19:54 by jwe] jwe parents: 461 diff changeset	53 {
20974 1edf15793cac maint: Use is_empty rather than "numel () == 0" for clarity. Rik <rik@octave.org> parents: 20531 diff changeset	54 if (rng_numel > 0 && cache.is_empty ())
645 21cb3c7dc9e3 [project @ 1994-08-24 06:19:54 by jwe] jwe parents: 461 diff changeset	55 {
20228 00cf2847355d Deprecate Array::nelem() and Range::nelem() in favour of ::numel(). Carnë Draug <carandraug@octave.org> parents: 19697 diff changeset	56 cache.resize (1, rng_numel);
20531 dcfbf4c1c3c8 eliminate trailing whitespace and tabs from sources John W. Eaton <jwe@octave.org> parents: 20513 diff changeset	57
20513 96153b16febe Overhaul Range object in liboctave. Rik <rik@octave.org> parents: 20457 diff changeset	58 // The first element must always be exactly the base.
96153b16febe Overhaul Range object in liboctave. Rik <rik@octave.org> parents: 20457 diff changeset	59 // E.g, -0 would otherwise become +0 in the loop (-0 + 0*increment).
96153b16febe Overhaul Range object in liboctave. Rik <rik@octave.org> parents: 20457 diff changeset	60 cache(0) = rng_base;
96153b16febe Overhaul Range object in liboctave. Rik <rik@octave.org> parents: 20457 diff changeset	61
645 21cb3c7dc9e3 [project @ 1994-08-24 06:19:54 by jwe] jwe parents: 461 diff changeset	62 double b = rng_base;
21cb3c7dc9e3 [project @ 1994-08-24 06:19:54 by jwe] jwe parents: 461 diff changeset	63 double increment = rng_inc;
20513 96153b16febe Overhaul Range object in liboctave. Rik <rik@octave.org> parents: 20457 diff changeset	64 for (octave_idx_type i = 1; i < rng_numel - 1; i++)
96153b16febe Overhaul Range object in liboctave. Rik <rik@octave.org> parents: 20457 diff changeset	65 cache(i) = b + i * increment;
4791 62f2fb593455 [project @ 2004-02-20 18:02:59 by jwe] jwe parents: 4192 diff changeset	66
20513 96153b16febe Overhaul Range object in liboctave. Rik <rik@octave.org> parents: 20457 diff changeset	67 cache(rng_numel - 1) = rng_limit;
645 21cb3c7dc9e3 [project @ 1994-08-24 06:19:54 by jwe] jwe parents: 461 diff changeset	68 }
21cb3c7dc9e3 [project @ 1994-08-24 06:19:54 by jwe] jwe parents: 461 diff changeset	69
4810 72a6d410a14a [project @ 2004-03-03 18:49:39 by jwe] jwe parents: 4791 diff changeset	70 return cache;
645 21cb3c7dc9e3 [project @ 1994-08-24 06:19:54 by jwe] jwe parents: 461 diff changeset	71 }
3 9a4c07481e61 [project @ 1993-08-08 01:20:23 by jwe] jwe parents: diff changeset	72
9986 672e1b49e01e optimize indexing of ranges by single subscripts Jaroslav Hajek <highegg@gmail.com> parents: 8971 diff changeset	73 double
672e1b49e01e optimize indexing of ranges by single subscripts Jaroslav Hajek <highegg@gmail.com> parents: 8971 diff changeset	74 Range::checkelem (octave_idx_type i) const
672e1b49e01e optimize indexing of ranges by single subscripts Jaroslav Hajek <highegg@gmail.com> parents: 8971 diff changeset	75 {
20228 00cf2847355d Deprecate Array::nelem() and Range::nelem() in favour of ::numel(). Carnë Draug <carandraug@octave.org> parents: 19697 diff changeset	76 if (i < 0 \|\| i >= rng_numel)
21100 e39e05d90788 Switch gripe_XXX to either err_XXX or warn_XXX naming scheme. Rik <rik@octave.org> parents: 20974 diff changeset	77 err_index_out_of_range (1, 1, i+1, rng_numel);
9986 672e1b49e01e optimize indexing of ranges by single subscripts Jaroslav Hajek <highegg@gmail.com> parents: 8971 diff changeset	78
16169 0303fda3e929 Fix range behavior with -0 endpoints (bug #38423) Rik <rik@octave.org> parents: 15271 diff changeset	79 if (i == 0)
0303fda3e929 Fix range behavior with -0 endpoints (bug #38423) Rik <rik@octave.org> parents: 15271 diff changeset	80 return rng_base;
20228 00cf2847355d Deprecate Array::nelem() and Range::nelem() in favour of ::numel(). Carnë Draug <carandraug@octave.org> parents: 19697 diff changeset	81 else if (i < rng_numel - 1)
16169 0303fda3e929 Fix range behavior with -0 endpoints (bug #38423) Rik <rik@octave.org> parents: 15271 diff changeset	82 return rng_base + i * rng_inc;
0303fda3e929 Fix range behavior with -0 endpoints (bug #38423) Rik <rik@octave.org> parents: 15271 diff changeset	83 else
20513 96153b16febe Overhaul Range object in liboctave. Rik <rik@octave.org> parents: 20457 diff changeset	84 return rng_limit;
9986 672e1b49e01e optimize indexing of ranges by single subscripts Jaroslav Hajek <highegg@gmail.com> parents: 8971 diff changeset	85 }
672e1b49e01e optimize indexing of ranges by single subscripts Jaroslav Hajek <highegg@gmail.com> parents: 8971 diff changeset	86
16169 0303fda3e929 Fix range behavior with -0 endpoints (bug #38423) Rik <rik@octave.org> parents: 15271 diff changeset	87 double
0303fda3e929 Fix range behavior with -0 endpoints (bug #38423) Rik <rik@octave.org> parents: 15271 diff changeset	88 Range::elem (octave_idx_type i) const
0303fda3e929 Fix range behavior with -0 endpoints (bug #38423) Rik <rik@octave.org> parents: 15271 diff changeset	89 {
21229 a83e7a384ee0 create and install a subset of config.h in octave-config.h John W. Eaton <jwe@octave.org> parents: 21202 diff changeset	90 #if defined (OCTAVE_ENABLE_BOUNDS_CHECK)
16169 0303fda3e929 Fix range behavior with -0 endpoints (bug #38423) Rik <rik@octave.org> parents: 15271 diff changeset	91 return checkelem (i);
0303fda3e929 Fix range behavior with -0 endpoints (bug #38423) Rik <rik@octave.org> parents: 15271 diff changeset	92 #else
0303fda3e929 Fix range behavior with -0 endpoints (bug #38423) Rik <rik@octave.org> parents: 15271 diff changeset	93 if (i == 0)
0303fda3e929 Fix range behavior with -0 endpoints (bug #38423) Rik <rik@octave.org> parents: 15271 diff changeset	94 return rng_base;
20228 00cf2847355d Deprecate Array::nelem() and Range::nelem() in favour of ::numel(). Carnë Draug <carandraug@octave.org> parents: 19697 diff changeset	95 else if (i < rng_numel - 1)
16169 0303fda3e929 Fix range behavior with -0 endpoints (bug #38423) Rik <rik@octave.org> parents: 15271 diff changeset	96 return rng_base + i * rng_inc;
0303fda3e929 Fix range behavior with -0 endpoints (bug #38423) Rik <rik@octave.org> parents: 15271 diff changeset	97 else
20513 96153b16febe Overhaul Range object in liboctave. Rik <rik@octave.org> parents: 20457 diff changeset	98 return rng_limit;
16169 0303fda3e929 Fix range behavior with -0 endpoints (bug #38423) Rik <rik@octave.org> parents: 15271 diff changeset	99 #endif
0303fda3e929 Fix range behavior with -0 endpoints (bug #38423) Rik <rik@octave.org> parents: 15271 diff changeset	100 }
0303fda3e929 Fix range behavior with -0 endpoints (bug #38423) Rik <rik@octave.org> parents: 15271 diff changeset	101
16186 b4a6895a9863 Use proper OO-class for __rangeidx_helper(). Rik <rik@octave.org> parents: 16169 diff changeset	102 // Helper class used solely for idx_vector.loop () function call
b4a6895a9863 Use proper OO-class for __rangeidx_helper(). Rik <rik@octave.org> parents: 16169 diff changeset	103 class __rangeidx_helper
9986 672e1b49e01e optimize indexing of ranges by single subscripts Jaroslav Hajek <highegg@gmail.com> parents: 8971 diff changeset	104 {
17769 49a5a4be04a1 maint: Use GNU style coding conventions for code in liboctave/ Rik <rik@octave.org> parents: 17744 diff changeset	105 public:
16186 b4a6895a9863 Use proper OO-class for __rangeidx_helper(). Rik <rik@octave.org> parents: 16169 diff changeset	106 __rangeidx_helper (double *a, double b, double i, double l, octave_idx_type n)
16169 0303fda3e929 Fix range behavior with -0 endpoints (bug #38423) Rik <rik@octave.org> parents: 15271 diff changeset	107 : array (a), base (b), inc (i), limit (l), nmax (n-1) { }
0303fda3e929 Fix range behavior with -0 endpoints (bug #38423) Rik <rik@octave.org> parents: 15271 diff changeset	108
9986 672e1b49e01e optimize indexing of ranges by single subscripts Jaroslav Hajek <highegg@gmail.com> parents: 8971 diff changeset	109 void operator () (octave_idx_type i)
17769 49a5a4be04a1 maint: Use GNU style coding conventions for code in liboctave/ Rik <rik@octave.org> parents: 17744 diff changeset	110 {
49a5a4be04a1 maint: Use GNU style coding conventions for code in liboctave/ Rik <rik@octave.org> parents: 17744 diff changeset	111 if (i == 0)
49a5a4be04a1 maint: Use GNU style coding conventions for code in liboctave/ Rik <rik@octave.org> parents: 17744 diff changeset	112 *array++ = base;
49a5a4be04a1 maint: Use GNU style coding conventions for code in liboctave/ Rik <rik@octave.org> parents: 17744 diff changeset	113 else if (i < nmax)
49a5a4be04a1 maint: Use GNU style coding conventions for code in liboctave/ Rik <rik@octave.org> parents: 17744 diff changeset	114 array++ = base + i inc;
49a5a4be04a1 maint: Use GNU style coding conventions for code in liboctave/ Rik <rik@octave.org> parents: 17744 diff changeset	115 else
20513 96153b16febe Overhaul Range object in liboctave. Rik <rik@octave.org> parents: 20457 diff changeset	116 *array++ = limit;
17769 49a5a4be04a1 maint: Use GNU style coding conventions for code in liboctave/ Rik <rik@octave.org> parents: 17744 diff changeset	117 }
16186 b4a6895a9863 Use proper OO-class for __rangeidx_helper(). Rik <rik@octave.org> parents: 16169 diff changeset	118
17769 49a5a4be04a1 maint: Use GNU style coding conventions for code in liboctave/ Rik <rik@octave.org> parents: 17744 diff changeset	119 private:
16186 b4a6895a9863 Use proper OO-class for __rangeidx_helper(). Rik <rik@octave.org> parents: 16169 diff changeset	120
b4a6895a9863 Use proper OO-class for __rangeidx_helper(). Rik <rik@octave.org> parents: 16169 diff changeset	121 double *array, base, inc, limit;
b4a6895a9863 Use proper OO-class for __rangeidx_helper(). Rik <rik@octave.org> parents: 16169 diff changeset	122 octave_idx_type nmax;
b4a6895a9863 Use proper OO-class for __rangeidx_helper(). Rik <rik@octave.org> parents: 16169 diff changeset	123
9986 672e1b49e01e optimize indexing of ranges by single subscripts Jaroslav Hajek <highegg@gmail.com> parents: 8971 diff changeset	124 };
672e1b49e01e optimize indexing of ranges by single subscripts Jaroslav Hajek <highegg@gmail.com> parents: 8971 diff changeset	125
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	126 Array<double>
9986 672e1b49e01e optimize indexing of ranges by single subscripts Jaroslav Hajek <highegg@gmail.com> parents: 8971 diff changeset	127 Range::index (const idx_vector& i) const
672e1b49e01e optimize indexing of ranges by single subscripts Jaroslav Hajek <highegg@gmail.com> parents: 8971 diff changeset	128 {
672e1b49e01e optimize indexing of ranges by single subscripts Jaroslav Hajek <highegg@gmail.com> parents: 8971 diff changeset	129 Array<double> retval;
672e1b49e01e optimize indexing of ranges by single subscripts Jaroslav Hajek <highegg@gmail.com> parents: 8971 diff changeset	130
20228 00cf2847355d Deprecate Array::nelem() and Range::nelem() in favour of ::numel(). Carnë Draug <carandraug@octave.org> parents: 19697 diff changeset	131 octave_idx_type n = rng_numel;
9986 672e1b49e01e optimize indexing of ranges by single subscripts Jaroslav Hajek <highegg@gmail.com> parents: 8971 diff changeset	132
672e1b49e01e optimize indexing of ranges by single subscripts Jaroslav Hajek <highegg@gmail.com> parents: 8971 diff changeset	133 if (i.is_colon ())
672e1b49e01e optimize indexing of ranges by single subscripts Jaroslav Hajek <highegg@gmail.com> parents: 8971 diff changeset	134 {
20228 00cf2847355d Deprecate Array::nelem() and Range::nelem() in favour of ::numel(). Carnë Draug <carandraug@octave.org> parents: 19697 diff changeset	135 retval = matrix_value ().reshape (dim_vector (rng_numel, 1));
9986 672e1b49e01e optimize indexing of ranges by single subscripts Jaroslav Hajek <highegg@gmail.com> parents: 8971 diff changeset	136 }
672e1b49e01e optimize indexing of ranges by single subscripts Jaroslav Hajek <highegg@gmail.com> parents: 8971 diff changeset	137 else
672e1b49e01e optimize indexing of ranges by single subscripts Jaroslav Hajek <highegg@gmail.com> parents: 8971 diff changeset	138 {
10366 e5ae13b8b2c2 improve Array indexing error messages Jaroslav Hajek <highegg@gmail.com> parents: 10314 diff changeset	139 if (i.extent (n) != n)
21100 e39e05d90788 Switch gripe_XXX to either err_XXX or warn_XXX naming scheme. Rik <rik@octave.org> parents: 20974 diff changeset	140 err_index_out_of_range (1, 1, i.extent (n), n); // throws
10366 e5ae13b8b2c2 improve Array indexing error messages Jaroslav Hajek <highegg@gmail.com> parents: 10314 diff changeset	141
9986 672e1b49e01e optimize indexing of ranges by single subscripts Jaroslav Hajek <highegg@gmail.com> parents: 8971 diff changeset	142 dim_vector rd = i.orig_dimensions ();
672e1b49e01e optimize indexing of ranges by single subscripts Jaroslav Hajek <highegg@gmail.com> parents: 8971 diff changeset	143 octave_idx_type il = i.length (n);
672e1b49e01e optimize indexing of ranges by single subscripts Jaroslav Hajek <highegg@gmail.com> parents: 8971 diff changeset	144
672e1b49e01e optimize indexing of ranges by single subscripts Jaroslav Hajek <highegg@gmail.com> parents: 8971 diff changeset	145 // taken from Array.cc.
672e1b49e01e optimize indexing of ranges by single subscripts Jaroslav Hajek <highegg@gmail.com> parents: 8971 diff changeset	146 if (n != 1 && rd.is_vector ())
672e1b49e01e optimize indexing of ranges by single subscripts Jaroslav Hajek <highegg@gmail.com> parents: 8971 diff changeset	147 rd = dim_vector (1, il);
672e1b49e01e optimize indexing of ranges by single subscripts Jaroslav Hajek <highegg@gmail.com> parents: 8971 diff changeset	148
672e1b49e01e optimize indexing of ranges by single subscripts Jaroslav Hajek <highegg@gmail.com> parents: 8971 diff changeset	149 retval.clear (rd);
672e1b49e01e optimize indexing of ranges by single subscripts Jaroslav Hajek <highegg@gmail.com> parents: 8971 diff changeset	150
16186 b4a6895a9863 Use proper OO-class for __rangeidx_helper(). Rik <rik@octave.org> parents: 16169 diff changeset	151 // idx_vector loop across all values in i,
b4a6895a9863 Use proper OO-class for __rangeidx_helper(). Rik <rik@octave.org> parents: 16169 diff changeset	152 // executing __rangeidx_helper (i) for each i
b4a6895a9863 Use proper OO-class for __rangeidx_helper(). Rik <rik@octave.org> parents: 16169 diff changeset	153 i.loop (n, __rangeidx_helper (retval.fortran_vec (),
20228 00cf2847355d Deprecate Array::nelem() and Range::nelem() in favour of ::numel(). Carnë Draug <carandraug@octave.org> parents: 19697 diff changeset	154 rng_base, rng_inc, rng_limit, rng_numel));
9986 672e1b49e01e optimize indexing of ranges by single subscripts Jaroslav Hajek <highegg@gmail.com> parents: 8971 diff changeset	155 }
672e1b49e01e optimize indexing of ranges by single subscripts Jaroslav Hajek <highegg@gmail.com> parents: 8971 diff changeset	156
672e1b49e01e optimize indexing of ranges by single subscripts Jaroslav Hajek <highegg@gmail.com> parents: 8971 diff changeset	157 return retval;
672e1b49e01e optimize indexing of ranges by single subscripts Jaroslav Hajek <highegg@gmail.com> parents: 8971 diff changeset	158 }
4810 72a6d410a14a [project @ 2004-03-03 18:49:39 by jwe] jwe parents: 4791 diff changeset	159
20228 00cf2847355d Deprecate Array::nelem() and Range::nelem() in favour of ::numel(). Carnë Draug <carandraug@octave.org> parents: 19697 diff changeset	160 // NOTE: max and min only return useful values if numel > 0.
00cf2847355d Deprecate Array::nelem() and Range::nelem() in favour of ::numel(). Carnë Draug <carandraug@octave.org> parents: 19697 diff changeset	161 // do_minmax_body() in max.cc avoids calling Range::min/max if numel == 0.
208 380cb9ccc889 [project @ 1993-11-12 10:35:05 by jwe] jwe parents: 3 diff changeset	162
380cb9ccc889 [project @ 1993-11-12 10:35:05 by jwe] jwe parents: 3 diff changeset	163 double
380cb9ccc889 [project @ 1993-11-12 10:35:05 by jwe] jwe parents: 3 diff changeset	164 Range::min (void) const
380cb9ccc889 [project @ 1993-11-12 10:35:05 by jwe] jwe parents: 3 diff changeset	165 {
380cb9ccc889 [project @ 1993-11-12 10:35:05 by jwe] jwe parents: 3 diff changeset	166 double retval = 0.0;
20228 00cf2847355d Deprecate Array::nelem() and Range::nelem() in favour of ::numel(). Carnë Draug <carandraug@octave.org> parents: 19697 diff changeset	167 if (rng_numel > 0)
208 380cb9ccc889 [project @ 1993-11-12 10:35:05 by jwe] jwe parents: 3 diff changeset	168 {
380cb9ccc889 [project @ 1993-11-12 10:35:05 by jwe] jwe parents: 3 diff changeset	169 if (rng_inc > 0)
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	170 retval = rng_base;
208 380cb9ccc889 [project @ 1993-11-12 10:35:05 by jwe] jwe parents: 3 diff changeset	171 else
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	172 {
20228 00cf2847355d Deprecate Array::nelem() and Range::nelem() in favour of ::numel(). Carnë Draug <carandraug@octave.org> parents: 19697 diff changeset	173 retval = rng_base + (rng_numel - 1) * rng_inc;
4791 62f2fb593455 [project @ 2004-02-20 18:02:59 by jwe] jwe parents: 4192 diff changeset	174
20513 96153b16febe Overhaul Range object in liboctave. Rik <rik@octave.org> parents: 20457 diff changeset	175 // Require '<=' test. See note in max ().
16169 0303fda3e929 Fix range behavior with -0 endpoints (bug #38423) Rik <rik@octave.org> parents: 15271 diff changeset	176 if (retval <= rng_limit)
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	177 retval = rng_limit;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	178 }
4791 62f2fb593455 [project @ 2004-02-20 18:02:59 by jwe] jwe parents: 4192 diff changeset	179
208 380cb9ccc889 [project @ 1993-11-12 10:35:05 by jwe] jwe parents: 3 diff changeset	180 }
380cb9ccc889 [project @ 1993-11-12 10:35:05 by jwe] jwe parents: 3 diff changeset	181 return retval;
380cb9ccc889 [project @ 1993-11-12 10:35:05 by jwe] jwe parents: 3 diff changeset	182 }
380cb9ccc889 [project @ 1993-11-12 10:35:05 by jwe] jwe parents: 3 diff changeset	183
380cb9ccc889 [project @ 1993-11-12 10:35:05 by jwe] jwe parents: 3 diff changeset	184 double
380cb9ccc889 [project @ 1993-11-12 10:35:05 by jwe] jwe parents: 3 diff changeset	185 Range::max (void) const
380cb9ccc889 [project @ 1993-11-12 10:35:05 by jwe] jwe parents: 3 diff changeset	186 {
380cb9ccc889 [project @ 1993-11-12 10:35:05 by jwe] jwe parents: 3 diff changeset	187 double retval = 0.0;
20228 00cf2847355d Deprecate Array::nelem() and Range::nelem() in favour of ::numel(). Carnë Draug <carandraug@octave.org> parents: 19697 diff changeset	188 if (rng_numel > 0)
208 380cb9ccc889 [project @ 1993-11-12 10:35:05 by jwe] jwe parents: 3 diff changeset	189 {
380cb9ccc889 [project @ 1993-11-12 10:35:05 by jwe] jwe parents: 3 diff changeset	190 if (rng_inc > 0)
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	191 {
20228 00cf2847355d Deprecate Array::nelem() and Range::nelem() in favour of ::numel(). Carnë Draug <carandraug@octave.org> parents: 19697 diff changeset	192 retval = rng_base + (rng_numel - 1) * rng_inc;
4791 62f2fb593455 [project @ 2004-02-20 18:02:59 by jwe] jwe parents: 4192 diff changeset	193
20513 96153b16febe Overhaul Range object in liboctave. Rik <rik@octave.org> parents: 20457 diff changeset	194 // On some machines (x86 with extended precision floating point
96153b16febe Overhaul Range object in liboctave. Rik <rik@octave.org> parents: 20457 diff changeset	195 // arithmetic, for example) it is possible that we can overshoot the
96153b16febe Overhaul Range object in liboctave. Rik <rik@octave.org> parents: 20457 diff changeset	196 // limit by approximately the machine precision even though we were
96153b16febe Overhaul Range object in liboctave. Rik <rik@octave.org> parents: 20457 diff changeset	197 // very careful in our calculation of the number of elements.
96153b16febe Overhaul Range object in liboctave. Rik <rik@octave.org> parents: 20457 diff changeset	198 // Therefore, we clip the result to the limit if it overshoots.
96153b16febe Overhaul Range object in liboctave. Rik <rik@octave.org> parents: 20457 diff changeset	199 // The test also includes equality (>= rng_limit) to have expressions
96153b16febe Overhaul Range object in liboctave. Rik <rik@octave.org> parents: 20457 diff changeset	200 // such as -5:1:-0 result in a -0 endpoint.
16169 0303fda3e929 Fix range behavior with -0 endpoints (bug #38423) Rik <rik@octave.org> parents: 15271 diff changeset	201 if (retval >= rng_limit)
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	202 retval = rng_limit;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	203 }
208 380cb9ccc889 [project @ 1993-11-12 10:35:05 by jwe] jwe parents: 3 diff changeset	204 else
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	205 retval = rng_base;
208 380cb9ccc889 [project @ 1993-11-12 10:35:05 by jwe] jwe parents: 3 diff changeset	206 }
380cb9ccc889 [project @ 1993-11-12 10:35:05 by jwe] jwe parents: 3 diff changeset	207 return retval;
380cb9ccc889 [project @ 1993-11-12 10:35:05 by jwe] jwe parents: 3 diff changeset	208 }
380cb9ccc889 [project @ 1993-11-12 10:35:05 by jwe] jwe parents: 3 diff changeset	209
380cb9ccc889 [project @ 1993-11-12 10:35:05 by jwe] jwe parents: 3 diff changeset	210 void
7458 1032e24f199f make sort work for ranges John W. Eaton <jwe@octave.org> parents: 7231 diff changeset	211 Range::sort_internal (bool ascending)
208 380cb9ccc889 [project @ 1993-11-12 10:35:05 by jwe] jwe parents: 3 diff changeset	212 {
20513 96153b16febe Overhaul Range object in liboctave. Rik <rik@octave.org> parents: 20457 diff changeset	213 if ((ascending && rng_base > rng_limit && rng_inc < 0.0)
96153b16febe Overhaul Range object in liboctave. Rik <rik@octave.org> parents: 20457 diff changeset	214 \|\| (! ascending && rng_base < rng_limit && rng_inc > 0.0))
208 380cb9ccc889 [project @ 1993-11-12 10:35:05 by jwe] jwe parents: 3 diff changeset	215 {
20513 96153b16febe Overhaul Range object in liboctave. Rik <rik@octave.org> parents: 20457 diff changeset	216 std::swap (rng_base, rng_limit);
7458 1032e24f199f make sort work for ranges John W. Eaton <jwe@octave.org> parents: 7231 diff changeset	217 rng_inc = -rng_inc;
1032e24f199f make sort work for ranges John W. Eaton <jwe@octave.org> parents: 7231 diff changeset	218 clear_cache ();
1032e24f199f make sort work for ranges John W. Eaton <jwe@octave.org> parents: 7231 diff changeset	219 }
1032e24f199f make sort work for ranges John W. Eaton <jwe@octave.org> parents: 7231 diff changeset	220 }
1032e24f199f make sort work for ranges John W. Eaton <jwe@octave.org> parents: 7231 diff changeset	221
1032e24f199f make sort work for ranges John W. Eaton <jwe@octave.org> parents: 7231 diff changeset	222 void
1032e24f199f make sort work for ranges John W. Eaton <jwe@octave.org> parents: 7231 diff changeset	223 Range::sort_internal (Array<octave_idx_type>& sidx, bool ascending)
1032e24f199f make sort work for ranges John W. Eaton <jwe@octave.org> parents: 7231 diff changeset	224 {
20228 00cf2847355d Deprecate Array::nelem() and Range::nelem() in favour of ::numel(). Carnë Draug <carandraug@octave.org> parents: 19697 diff changeset	225 octave_idx_type nel = numel ();
7458 1032e24f199f make sort work for ranges John W. Eaton <jwe@octave.org> parents: 7231 diff changeset	226
1032e24f199f make sort work for ranges John W. Eaton <jwe@octave.org> parents: 7231 diff changeset	227 sidx.resize (dim_vector (1, nel));
1032e24f199f make sort work for ranges John W. Eaton <jwe@octave.org> parents: 7231 diff changeset	228
1032e24f199f make sort work for ranges John W. Eaton <jwe@octave.org> parents: 7231 diff changeset	229 octave_idx_type *psidx = sidx.fortran_vec ();
1032e24f199f make sort work for ranges John W. Eaton <jwe@octave.org> parents: 7231 diff changeset	230
1032e24f199f make sort work for ranges John W. Eaton <jwe@octave.org> parents: 7231 diff changeset	231 bool reverse = false;
1032e24f199f make sort work for ranges John W. Eaton <jwe@octave.org> parents: 7231 diff changeset	232
20513 96153b16febe Overhaul Range object in liboctave. Rik <rik@octave.org> parents: 20457 diff changeset	233 if ((ascending && rng_base > rng_limit && rng_inc < 0.0)
96153b16febe Overhaul Range object in liboctave. Rik <rik@octave.org> parents: 20457 diff changeset	234 \|\| (! ascending && rng_base < rng_limit && rng_inc > 0.0))
7458 1032e24f199f make sort work for ranges John W. Eaton <jwe@octave.org> parents: 7231 diff changeset	235 {
20513 96153b16febe Overhaul Range object in liboctave. Rik <rik@octave.org> parents: 20457 diff changeset	236 std::swap (rng_base, rng_limit);
7458 1032e24f199f make sort work for ranges John W. Eaton <jwe@octave.org> parents: 7231 diff changeset	237 rng_inc = -rng_inc;
1032e24f199f make sort work for ranges John W. Eaton <jwe@octave.org> parents: 7231 diff changeset	238 clear_cache ();
1032e24f199f make sort work for ranges John W. Eaton <jwe@octave.org> parents: 7231 diff changeset	239 reverse = true;
1032e24f199f make sort work for ranges John W. Eaton <jwe@octave.org> parents: 7231 diff changeset	240 }
1032e24f199f make sort work for ranges John W. Eaton <jwe@octave.org> parents: 7231 diff changeset	241
1032e24f199f make sort work for ranges John W. Eaton <jwe@octave.org> parents: 7231 diff changeset	242 octave_idx_type tmp = reverse ? nel - 1 : 0;
7467 ba4214856f9f avoid shadow warning John W. Eaton <jwe@octave.org> parents: 7463 diff changeset	243 octave_idx_type stp = reverse ? -1 : 1;
7458 1032e24f199f make sort work for ranges John W. Eaton <jwe@octave.org> parents: 7231 diff changeset	244
7467 ba4214856f9f avoid shadow warning John W. Eaton <jwe@octave.org> parents: 7463 diff changeset	245 for (octave_idx_type i = 0; i < nel; i++, tmp += stp)
7458 1032e24f199f make sort work for ranges John W. Eaton <jwe@octave.org> parents: 7231 diff changeset	246 psidx[i] = tmp;
1032e24f199f make sort work for ranges John W. Eaton <jwe@octave.org> parents: 7231 diff changeset	247
1032e24f199f make sort work for ranges John W. Eaton <jwe@octave.org> parents: 7231 diff changeset	248 }
1032e24f199f make sort work for ranges John W. Eaton <jwe@octave.org> parents: 7231 diff changeset	249
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	250 Matrix
7620 36594d5bbe13 Move diag function into the octave_value class David Bateman <dbateman@free.fr> parents: 7467 diff changeset	251 Range::diag (octave_idx_type k) const
36594d5bbe13 Move diag function into the octave_value class David Bateman <dbateman@free.fr> parents: 7467 diff changeset	252 {
8971 967a692ddfe2 fix range arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8920 diff changeset	253 return matrix_value ().diag (k);
7620 36594d5bbe13 Move diag function into the octave_value class David Bateman <dbateman@free.fr> parents: 7467 diff changeset	254 }
36594d5bbe13 Move diag function into the octave_value class David Bateman <dbateman@free.fr> parents: 7467 diff changeset	255
7458 1032e24f199f make sort work for ranges John W. Eaton <jwe@octave.org> parents: 7231 diff changeset	256 Range
1032e24f199f make sort work for ranges John W. Eaton <jwe@octave.org> parents: 7231 diff changeset	257 Range::sort (octave_idx_type dim, sortmode mode) const
1032e24f199f make sort work for ranges John W. Eaton <jwe@octave.org> parents: 7231 diff changeset	258 {
1032e24f199f make sort work for ranges John W. Eaton <jwe@octave.org> parents: 7231 diff changeset	259 Range retval = *this;
1032e24f199f make sort work for ranges John W. Eaton <jwe@octave.org> parents: 7231 diff changeset	260
1032e24f199f make sort work for ranges John W. Eaton <jwe@octave.org> parents: 7231 diff changeset	261 if (dim == 1)
1032e24f199f make sort work for ranges John W. Eaton <jwe@octave.org> parents: 7231 diff changeset	262 {
7463 2467639bd8c0 eliminate UNDEFINED sort mode John W. Eaton <jwe@octave.org> parents: 7458 diff changeset	263 if (mode == ASCENDING)
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	264 retval.sort_internal (true);
7463 2467639bd8c0 eliminate UNDEFINED sort mode John W. Eaton <jwe@octave.org> parents: 7458 diff changeset	265 else if (mode == DESCENDING)
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	266 retval.sort_internal (false);
7458 1032e24f199f make sort work for ranges John W. Eaton <jwe@octave.org> parents: 7231 diff changeset	267 }
1032e24f199f make sort work for ranges John W. Eaton <jwe@octave.org> parents: 7231 diff changeset	268 else if (dim != 0)
1032e24f199f make sort work for ranges John W. Eaton <jwe@octave.org> parents: 7231 diff changeset	269 (*current_liboctave_error_handler) ("Range::sort: invalid dimension");
1032e24f199f make sort work for ranges John W. Eaton <jwe@octave.org> parents: 7231 diff changeset	270
1032e24f199f make sort work for ranges John W. Eaton <jwe@octave.org> parents: 7231 diff changeset	271 return retval;
1032e24f199f make sort work for ranges John W. Eaton <jwe@octave.org> parents: 7231 diff changeset	272 }
1032e24f199f make sort work for ranges John W. Eaton <jwe@octave.org> parents: 7231 diff changeset	273
1032e24f199f make sort work for ranges John W. Eaton <jwe@octave.org> parents: 7231 diff changeset	274 Range
1032e24f199f make sort work for ranges John W. Eaton <jwe@octave.org> parents: 7231 diff changeset	275 Range::sort (Array<octave_idx_type>& sidx, octave_idx_type dim,
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	276 sortmode mode) const
7458 1032e24f199f make sort work for ranges John W. Eaton <jwe@octave.org> parents: 7231 diff changeset	277 {
1032e24f199f make sort work for ranges John W. Eaton <jwe@octave.org> parents: 7231 diff changeset	278 Range retval = *this;
1032e24f199f make sort work for ranges John W. Eaton <jwe@octave.org> parents: 7231 diff changeset	279
1032e24f199f make sort work for ranges John W. Eaton <jwe@octave.org> parents: 7231 diff changeset	280 if (dim == 1)
1032e24f199f make sort work for ranges John W. Eaton <jwe@octave.org> parents: 7231 diff changeset	281 {
7463 2467639bd8c0 eliminate UNDEFINED sort mode John W. Eaton <jwe@octave.org> parents: 7458 diff changeset	282 if (mode == ASCENDING)
16169 0303fda3e929 Fix range behavior with -0 endpoints (bug #38423) Rik <rik@octave.org> parents: 15271 diff changeset	283 retval.sort_internal (sidx, true);
7463 2467639bd8c0 eliminate UNDEFINED sort mode John W. Eaton <jwe@octave.org> parents: 7458 diff changeset	284 else if (mode == DESCENDING)
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	285 retval.sort_internal (sidx, false);
7458 1032e24f199f make sort work for ranges John W. Eaton <jwe@octave.org> parents: 7231 diff changeset	286 }
1032e24f199f make sort work for ranges John W. Eaton <jwe@octave.org> parents: 7231 diff changeset	287 else if (dim != 0)
1032e24f199f make sort work for ranges John W. Eaton <jwe@octave.org> parents: 7231 diff changeset	288 (*current_liboctave_error_handler) ("Range::sort: invalid dimension");
1032e24f199f make sort work for ranges John W. Eaton <jwe@octave.org> parents: 7231 diff changeset	289
1032e24f199f make sort work for ranges John W. Eaton <jwe@octave.org> parents: 7231 diff changeset	290 return retval;
208 380cb9ccc889 [project @ 1993-11-12 10:35:05 by jwe] jwe parents: 3 diff changeset	291 }
380cb9ccc889 [project @ 1993-11-12 10:35:05 by jwe] jwe parents: 3 diff changeset	292
8721 e9cb742df9eb imported patch sort3.diff Jaroslav Hajek <highegg@gmail.com> parents: 8589 diff changeset	293 sortmode
e9cb742df9eb imported patch sort3.diff Jaroslav Hajek <highegg@gmail.com> parents: 8589 diff changeset	294 Range::is_sorted (sortmode mode) const
e9cb742df9eb imported patch sort3.diff Jaroslav Hajek <highegg@gmail.com> parents: 8589 diff changeset	295 {
20228 00cf2847355d Deprecate Array::nelem() and Range::nelem() in favour of ::numel(). Carnë Draug <carandraug@octave.org> parents: 19697 diff changeset	296 if (rng_numel > 1 && rng_inc > 0)
16169 0303fda3e929 Fix range behavior with -0 endpoints (bug #38423) Rik <rik@octave.org> parents: 15271 diff changeset	297 mode = (mode == DESCENDING) ? UNSORTED : ASCENDING;
20228 00cf2847355d Deprecate Array::nelem() and Range::nelem() in favour of ::numel(). Carnë Draug <carandraug@octave.org> parents: 19697 diff changeset	298 else if (rng_numel > 1 && rng_inc < 0)
8721 e9cb742df9eb imported patch sort3.diff Jaroslav Hajek <highegg@gmail.com> parents: 8589 diff changeset	299 mode = (mode == ASCENDING) ? UNSORTED : DESCENDING;
e9cb742df9eb imported patch sort3.diff Jaroslav Hajek <highegg@gmail.com> parents: 8589 diff changeset	300 else
e9cb742df9eb imported patch sort3.diff Jaroslav Hajek <highegg@gmail.com> parents: 8589 diff changeset	301 mode = mode ? mode : ASCENDING;
8742 d2b06871afac add missing return statement Jaroslav Hajek <highegg@gmail.com> parents: 8721 diff changeset	302
d2b06871afac add missing return statement Jaroslav Hajek <highegg@gmail.com> parents: 8721 diff changeset	303 return mode;
8721 e9cb742df9eb imported patch sort3.diff Jaroslav Hajek <highegg@gmail.com> parents: 8589 diff changeset	304 }
e9cb742df9eb imported patch sort3.diff Jaroslav Hajek <highegg@gmail.com> parents: 8589 diff changeset	305
20513 96153b16febe Overhaul Range object in liboctave. Rik <rik@octave.org> parents: 20457 diff changeset	306 void
96153b16febe Overhaul Range object in liboctave. Rik <rik@octave.org> parents: 20457 diff changeset	307 Range::set_base (double b)
96153b16febe Overhaul Range object in liboctave. Rik <rik@octave.org> parents: 20457 diff changeset	308 {
96153b16febe Overhaul Range object in liboctave. Rik <rik@octave.org> parents: 20457 diff changeset	309 if (rng_base != b)
96153b16febe Overhaul Range object in liboctave. Rik <rik@octave.org> parents: 20457 diff changeset	310 {
96153b16febe Overhaul Range object in liboctave. Rik <rik@octave.org> parents: 20457 diff changeset	311 rng_base = b;
96153b16febe Overhaul Range object in liboctave. Rik <rik@octave.org> parents: 20457 diff changeset	312 rng_numel = numel_internal ();
96153b16febe Overhaul Range object in liboctave. Rik <rik@octave.org> parents: 20457 diff changeset	313
96153b16febe Overhaul Range object in liboctave. Rik <rik@octave.org> parents: 20457 diff changeset	314 double tmplimit = rng_limit;
96153b16febe Overhaul Range object in liboctave. Rik <rik@octave.org> parents: 20457 diff changeset	315
96153b16febe Overhaul Range object in liboctave. Rik <rik@octave.org> parents: 20457 diff changeset	316 if (rng_inc > 0)
96153b16febe Overhaul Range object in liboctave. Rik <rik@octave.org> parents: 20457 diff changeset	317 tmplimit = max ();
96153b16febe Overhaul Range object in liboctave. Rik <rik@octave.org> parents: 20457 diff changeset	318 else
96153b16febe Overhaul Range object in liboctave. Rik <rik@octave.org> parents: 20457 diff changeset	319 tmplimit = min ();
96153b16febe Overhaul Range object in liboctave. Rik <rik@octave.org> parents: 20457 diff changeset	320
96153b16febe Overhaul Range object in liboctave. Rik <rik@octave.org> parents: 20457 diff changeset	321 if (tmplimit != rng_limit)
96153b16febe Overhaul Range object in liboctave. Rik <rik@octave.org> parents: 20457 diff changeset	322 rng_limit = tmplimit;
96153b16febe Overhaul Range object in liboctave. Rik <rik@octave.org> parents: 20457 diff changeset	323
96153b16febe Overhaul Range object in liboctave. Rik <rik@octave.org> parents: 20457 diff changeset	324 clear_cache ();
96153b16febe Overhaul Range object in liboctave. Rik <rik@octave.org> parents: 20457 diff changeset	325 }
96153b16febe Overhaul Range object in liboctave. Rik <rik@octave.org> parents: 20457 diff changeset	326 }
96153b16febe Overhaul Range object in liboctave. Rik <rik@octave.org> parents: 20457 diff changeset	327
96153b16febe Overhaul Range object in liboctave. Rik <rik@octave.org> parents: 20457 diff changeset	328 void
96153b16febe Overhaul Range object in liboctave. Rik <rik@octave.org> parents: 20457 diff changeset	329 Range::set_limit (double l)
96153b16febe Overhaul Range object in liboctave. Rik <rik@octave.org> parents: 20457 diff changeset	330 {
96153b16febe Overhaul Range object in liboctave. Rik <rik@octave.org> parents: 20457 diff changeset	331 if (rng_limit != l)
96153b16febe Overhaul Range object in liboctave. Rik <rik@octave.org> parents: 20457 diff changeset	332 {
96153b16febe Overhaul Range object in liboctave. Rik <rik@octave.org> parents: 20457 diff changeset	333 rng_limit = l;
96153b16febe Overhaul Range object in liboctave. Rik <rik@octave.org> parents: 20457 diff changeset	334 rng_numel = numel_internal ();
96153b16febe Overhaul Range object in liboctave. Rik <rik@octave.org> parents: 20457 diff changeset	335
96153b16febe Overhaul Range object in liboctave. Rik <rik@octave.org> parents: 20457 diff changeset	336 double tmplimit = rng_limit;
96153b16febe Overhaul Range object in liboctave. Rik <rik@octave.org> parents: 20457 diff changeset	337
96153b16febe Overhaul Range object in liboctave. Rik <rik@octave.org> parents: 20457 diff changeset	338 if (rng_inc > 0)
96153b16febe Overhaul Range object in liboctave. Rik <rik@octave.org> parents: 20457 diff changeset	339 tmplimit = max ();
96153b16febe Overhaul Range object in liboctave. Rik <rik@octave.org> parents: 20457 diff changeset	340 else
96153b16febe Overhaul Range object in liboctave. Rik <rik@octave.org> parents: 20457 diff changeset	341 tmplimit = min ();
96153b16febe Overhaul Range object in liboctave. Rik <rik@octave.org> parents: 20457 diff changeset	342
96153b16febe Overhaul Range object in liboctave. Rik <rik@octave.org> parents: 20457 diff changeset	343 if (tmplimit != rng_limit)
96153b16febe Overhaul Range object in liboctave. Rik <rik@octave.org> parents: 20457 diff changeset	344 rng_limit = tmplimit;
96153b16febe Overhaul Range object in liboctave. Rik <rik@octave.org> parents: 20457 diff changeset	345
96153b16febe Overhaul Range object in liboctave. Rik <rik@octave.org> parents: 20457 diff changeset	346 clear_cache ();
96153b16febe Overhaul Range object in liboctave. Rik <rik@octave.org> parents: 20457 diff changeset	347 }
96153b16febe Overhaul Range object in liboctave. Rik <rik@octave.org> parents: 20457 diff changeset	348 }
96153b16febe Overhaul Range object in liboctave. Rik <rik@octave.org> parents: 20457 diff changeset	349
96153b16febe Overhaul Range object in liboctave. Rik <rik@octave.org> parents: 20457 diff changeset	350 void
96153b16febe Overhaul Range object in liboctave. Rik <rik@octave.org> parents: 20457 diff changeset	351 Range::set_inc (double i)
96153b16febe Overhaul Range object in liboctave. Rik <rik@octave.org> parents: 20457 diff changeset	352 {
96153b16febe Overhaul Range object in liboctave. Rik <rik@octave.org> parents: 20457 diff changeset	353 if (rng_inc != i)
96153b16febe Overhaul Range object in liboctave. Rik <rik@octave.org> parents: 20457 diff changeset	354 {
96153b16febe Overhaul Range object in liboctave. Rik <rik@octave.org> parents: 20457 diff changeset	355 rng_inc = i;
96153b16febe Overhaul Range object in liboctave. Rik <rik@octave.org> parents: 20457 diff changeset	356 rng_numel = numel_internal ();
96153b16febe Overhaul Range object in liboctave. Rik <rik@octave.org> parents: 20457 diff changeset	357
96153b16febe Overhaul Range object in liboctave. Rik <rik@octave.org> parents: 20457 diff changeset	358 double tmplimit = rng_limit;
96153b16febe Overhaul Range object in liboctave. Rik <rik@octave.org> parents: 20457 diff changeset	359
96153b16febe Overhaul Range object in liboctave. Rik <rik@octave.org> parents: 20457 diff changeset	360 if (rng_inc > 0)
96153b16febe Overhaul Range object in liboctave. Rik <rik@octave.org> parents: 20457 diff changeset	361 tmplimit = max ();
96153b16febe Overhaul Range object in liboctave. Rik <rik@octave.org> parents: 20457 diff changeset	362 else
96153b16febe Overhaul Range object in liboctave. Rik <rik@octave.org> parents: 20457 diff changeset	363 tmplimit = min ();
96153b16febe Overhaul Range object in liboctave. Rik <rik@octave.org> parents: 20457 diff changeset	364
96153b16febe Overhaul Range object in liboctave. Rik <rik@octave.org> parents: 20457 diff changeset	365 if (tmplimit != rng_limit)
96153b16febe Overhaul Range object in liboctave. Rik <rik@octave.org> parents: 20457 diff changeset	366 rng_limit = tmplimit;
96153b16febe Overhaul Range object in liboctave. Rik <rik@octave.org> parents: 20457 diff changeset	367
96153b16febe Overhaul Range object in liboctave. Rik <rik@octave.org> parents: 20457 diff changeset	368 clear_cache ();
96153b16febe Overhaul Range object in liboctave. Rik <rik@octave.org> parents: 20457 diff changeset	369 }
96153b16febe Overhaul Range object in liboctave. Rik <rik@octave.org> parents: 20457 diff changeset	370 }
96153b16febe Overhaul Range object in liboctave. Rik <rik@octave.org> parents: 20457 diff changeset	371
3504 5eef8a2294bd [project @ 2000-02-01 10:06:51 by jwe] jwe parents: 3503 diff changeset	372 std::ostream&
5eef8a2294bd [project @ 2000-02-01 10:06:51 by jwe] jwe parents: 3503 diff changeset	373 operator << (std::ostream& os, const Range& a)
3 9a4c07481e61 [project @ 1993-08-08 01:20:23 by jwe] jwe parents: diff changeset	374 {
9a4c07481e61 [project @ 1993-08-08 01:20:23 by jwe] jwe parents: diff changeset	375 double b = a.base ();
9a4c07481e61 [project @ 1993-08-08 01:20:23 by jwe] jwe parents: diff changeset	376 double increment = a.inc ();
20228 00cf2847355d Deprecate Array::nelem() and Range::nelem() in favour of ::numel(). Carnë Draug <carandraug@octave.org> parents: 19697 diff changeset	377 octave_idx_type num_elem = a.numel ();
3 9a4c07481e61 [project @ 1993-08-08 01:20:23 by jwe] jwe parents: diff changeset	378
16169 0303fda3e929 Fix range behavior with -0 endpoints (bug #38423) Rik <rik@octave.org> parents: 15271 diff changeset	379 if (num_elem > 1)
0303fda3e929 Fix range behavior with -0 endpoints (bug #38423) Rik <rik@octave.org> parents: 15271 diff changeset	380 {
0303fda3e929 Fix range behavior with -0 endpoints (bug #38423) Rik <rik@octave.org> parents: 15271 diff changeset	381 // First element must be the base exactly (-0).
0303fda3e929 Fix range behavior with -0 endpoints (bug #38423) Rik <rik@octave.org> parents: 15271 diff changeset	382 os << b << " ";
0303fda3e929 Fix range behavior with -0 endpoints (bug #38423) Rik <rik@octave.org> parents: 15271 diff changeset	383 for (octave_idx_type i = 1; i < num_elem-1; i++)
0303fda3e929 Fix range behavior with -0 endpoints (bug #38423) Rik <rik@octave.org> parents: 15271 diff changeset	384 os << b + i * increment << " ";
0303fda3e929 Fix range behavior with -0 endpoints (bug #38423) Rik <rik@octave.org> parents: 15271 diff changeset	385 }
3 9a4c07481e61 [project @ 1993-08-08 01:20:23 by jwe] jwe parents: diff changeset	386
20513 96153b16febe Overhaul Range object in liboctave. Rik <rik@octave.org> parents: 20457 diff changeset	387 // Print out exactly the last element, rather than a calculated last element.
96153b16febe Overhaul Range object in liboctave. Rik <rik@octave.org> parents: 20457 diff changeset	388 os << a.rng_limit << "\n";
3 9a4c07481e61 [project @ 1993-08-08 01:20:23 by jwe] jwe parents: diff changeset	389
9a4c07481e61 [project @ 1993-08-08 01:20:23 by jwe] jwe parents: diff changeset	390 return os;
9a4c07481e61 [project @ 1993-08-08 01:20:23 by jwe] jwe parents: diff changeset	391 }
9a4c07481e61 [project @ 1993-08-08 01:20:23 by jwe] jwe parents: diff changeset	392
3504 5eef8a2294bd [project @ 2000-02-01 10:06:51 by jwe] jwe parents: 3503 diff changeset	393 std::istream&
5eef8a2294bd [project @ 2000-02-01 10:06:51 by jwe] jwe parents: 3503 diff changeset	394 operator >> (std::istream& is, Range& a)
3 9a4c07481e61 [project @ 1993-08-08 01:20:23 by jwe] jwe parents: diff changeset	395 {
208 380cb9ccc889 [project @ 1993-11-12 10:35:05 by jwe] jwe parents: 3 diff changeset	396 is >> a.rng_base;
3 9a4c07481e61 [project @ 1993-08-08 01:20:23 by jwe] jwe parents: diff changeset	397 if (is)
9a4c07481e61 [project @ 1993-08-08 01:20:23 by jwe] jwe parents: diff changeset	398 {
20513 96153b16febe Overhaul Range object in liboctave. Rik <rik@octave.org> parents: 20457 diff changeset	399 double tmp_rng_limit;
96153b16febe Overhaul Range object in liboctave. Rik <rik@octave.org> parents: 20457 diff changeset	400 is >> tmp_rng_limit;
96153b16febe Overhaul Range object in liboctave. Rik <rik@octave.org> parents: 20457 diff changeset	401
3 9a4c07481e61 [project @ 1993-08-08 01:20:23 by jwe] jwe parents: diff changeset	402 if (is)
20513 96153b16febe Overhaul Range object in liboctave. Rik <rik@octave.org> parents: 20457 diff changeset	403 is >> a.rng_inc;
96153b16febe Overhaul Range object in liboctave. Rik <rik@octave.org> parents: 20457 diff changeset	404
96153b16febe Overhaul Range object in liboctave. Rik <rik@octave.org> parents: 20457 diff changeset	405 // Clip the rng_limit to the true limit and rebuild numel, clear cache
96153b16febe Overhaul Range object in liboctave. Rik <rik@octave.org> parents: 20457 diff changeset	406 a.set_limit (tmp_rng_limit);
3 9a4c07481e61 [project @ 1993-08-08 01:20:23 by jwe] jwe parents: diff changeset	407 }
9a4c07481e61 [project @ 1993-08-08 01:20:23 by jwe] jwe parents: diff changeset	408
9a4c07481e61 [project @ 1993-08-08 01:20:23 by jwe] jwe parents: diff changeset	409 return is;
9a4c07481e61 [project @ 1993-08-08 01:20:23 by jwe] jwe parents: diff changeset	410 }
9a4c07481e61 [project @ 1993-08-08 01:20:23 by jwe] jwe parents: diff changeset	411
2599 9705ea40f0a2 [project @ 1996-12-19 04:49:09 by jwe] jwe parents: 2383 diff changeset	412 Range
9705ea40f0a2 [project @ 1996-12-19 04:49:09 by jwe] jwe parents: 2383 diff changeset	413 operator - (const Range& r)
9705ea40f0a2 [project @ 1996-12-19 04:49:09 by jwe] jwe parents: 2383 diff changeset	414 {
20228 00cf2847355d Deprecate Array::nelem() and Range::nelem() in favour of ::numel(). Carnë Draug <carandraug@octave.org> parents: 19697 diff changeset	415 return Range (-r.base (), -r.limit (), -r.inc (), r.numel ());
2599 9705ea40f0a2 [project @ 1996-12-19 04:49:09 by jwe] jwe parents: 2383 diff changeset	416 }
9705ea40f0a2 [project @ 1996-12-19 04:49:09 by jwe] jwe parents: 2383 diff changeset	417
8553 c7ff200e45f5 optimize range-scalar ops Jaroslav Hajek <highegg@gmail.com> parents: 7620 diff changeset	418 Range operator + (double x, const Range& r)
c7ff200e45f5 optimize range-scalar ops Jaroslav Hajek <highegg@gmail.com> parents: 7620 diff changeset	419 {
20228 00cf2847355d Deprecate Array::nelem() and Range::nelem() in favour of ::numel(). Carnë Draug <carandraug@octave.org> parents: 19697 diff changeset	420 Range result (x + r.base (), x + r.limit (), r.inc (), r.numel ());
00cf2847355d Deprecate Array::nelem() and Range::nelem() in favour of ::numel(). Carnë Draug <carandraug@octave.org> parents: 19697 diff changeset	421 if (result.rng_numel < 0)
8971 967a692ddfe2 fix range arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8920 diff changeset	422 result.cache = x + r.matrix_value ();
967a692ddfe2 fix range arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8920 diff changeset	423
967a692ddfe2 fix range arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8920 diff changeset	424 return result;
8553 c7ff200e45f5 optimize range-scalar ops Jaroslav Hajek <highegg@gmail.com> parents: 7620 diff changeset	425 }
c7ff200e45f5 optimize range-scalar ops Jaroslav Hajek <highegg@gmail.com> parents: 7620 diff changeset	426
c7ff200e45f5 optimize range-scalar ops Jaroslav Hajek <highegg@gmail.com> parents: 7620 diff changeset	427 Range operator + (const Range& r, double x)
c7ff200e45f5 optimize range-scalar ops Jaroslav Hajek <highegg@gmail.com> parents: 7620 diff changeset	428 {
20228 00cf2847355d Deprecate Array::nelem() and Range::nelem() in favour of ::numel(). Carnë Draug <carandraug@octave.org> parents: 19697 diff changeset	429 Range result (r.base () + x, r.limit () + x, r.inc (), r.numel ());
00cf2847355d Deprecate Array::nelem() and Range::nelem() in favour of ::numel(). Carnë Draug <carandraug@octave.org> parents: 19697 diff changeset	430 if (result.rng_numel < 0)
8971 967a692ddfe2 fix range arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8920 diff changeset	431 result.cache = r.matrix_value () + x;
967a692ddfe2 fix range arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8920 diff changeset	432
967a692ddfe2 fix range arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8920 diff changeset	433 return result;
8553 c7ff200e45f5 optimize range-scalar ops Jaroslav Hajek <highegg@gmail.com> parents: 7620 diff changeset	434 }
c7ff200e45f5 optimize range-scalar ops Jaroslav Hajek <highegg@gmail.com> parents: 7620 diff changeset	435
c7ff200e45f5 optimize range-scalar ops Jaroslav Hajek <highegg@gmail.com> parents: 7620 diff changeset	436 Range operator - (double x, const Range& r)
c7ff200e45f5 optimize range-scalar ops Jaroslav Hajek <highegg@gmail.com> parents: 7620 diff changeset	437 {
20228 00cf2847355d Deprecate Array::nelem() and Range::nelem() in favour of ::numel(). Carnë Draug <carandraug@octave.org> parents: 19697 diff changeset	438 Range result (x - r.base (), x - r.limit (), -r.inc (), r.numel ());
00cf2847355d Deprecate Array::nelem() and Range::nelem() in favour of ::numel(). Carnë Draug <carandraug@octave.org> parents: 19697 diff changeset	439 if (result.rng_numel < 0)
8971 967a692ddfe2 fix range arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8920 diff changeset	440 result.cache = x - r.matrix_value ();
967a692ddfe2 fix range arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8920 diff changeset	441
967a692ddfe2 fix range arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8920 diff changeset	442 return result;
8553 c7ff200e45f5 optimize range-scalar ops Jaroslav Hajek <highegg@gmail.com> parents: 7620 diff changeset	443 }
c7ff200e45f5 optimize range-scalar ops Jaroslav Hajek <highegg@gmail.com> parents: 7620 diff changeset	444
c7ff200e45f5 optimize range-scalar ops Jaroslav Hajek <highegg@gmail.com> parents: 7620 diff changeset	445 Range operator - (const Range& r, double x)
c7ff200e45f5 optimize range-scalar ops Jaroslav Hajek <highegg@gmail.com> parents: 7620 diff changeset	446 {
20228 00cf2847355d Deprecate Array::nelem() and Range::nelem() in favour of ::numel(). Carnë Draug <carandraug@octave.org> parents: 19697 diff changeset	447 Range result (r.base () - x, r.limit () - x, r.inc (), r.numel ());
00cf2847355d Deprecate Array::nelem() and Range::nelem() in favour of ::numel(). Carnë Draug <carandraug@octave.org> parents: 19697 diff changeset	448 if (result.rng_numel < 0)
8971 967a692ddfe2 fix range arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8920 diff changeset	449 result.cache = r.matrix_value () - x;
967a692ddfe2 fix range arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8920 diff changeset	450
967a692ddfe2 fix range arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8920 diff changeset	451 return result;
8553 c7ff200e45f5 optimize range-scalar ops Jaroslav Hajek <highegg@gmail.com> parents: 7620 diff changeset	452 }
c7ff200e45f5 optimize range-scalar ops Jaroslav Hajek <highegg@gmail.com> parents: 7620 diff changeset	453
c7ff200e45f5 optimize range-scalar ops Jaroslav Hajek <highegg@gmail.com> parents: 7620 diff changeset	454 Range operator * (double x, const Range& r)
c7ff200e45f5 optimize range-scalar ops Jaroslav Hajek <highegg@gmail.com> parents: 7620 diff changeset	455 {
20228 00cf2847355d Deprecate Array::nelem() and Range::nelem() in favour of ::numel(). Carnë Draug <carandraug@octave.org> parents: 19697 diff changeset	456 Range result (x * r.base (), x * r.limit (), x * r.inc (), r.numel ());
00cf2847355d Deprecate Array::nelem() and Range::nelem() in favour of ::numel(). Carnë Draug <carandraug@octave.org> parents: 19697 diff changeset	457 if (result.rng_numel < 0)
8971 967a692ddfe2 fix range arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8920 diff changeset	458 result.cache = x * r.matrix_value ();
967a692ddfe2 fix range arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8920 diff changeset	459
967a692ddfe2 fix range arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8920 diff changeset	460 return result;
8553 c7ff200e45f5 optimize range-scalar ops Jaroslav Hajek <highegg@gmail.com> parents: 7620 diff changeset	461 }
c7ff200e45f5 optimize range-scalar ops Jaroslav Hajek <highegg@gmail.com> parents: 7620 diff changeset	462
c7ff200e45f5 optimize range-scalar ops Jaroslav Hajek <highegg@gmail.com> parents: 7620 diff changeset	463 Range operator * (const Range& r, double x)
c7ff200e45f5 optimize range-scalar ops Jaroslav Hajek <highegg@gmail.com> parents: 7620 diff changeset	464 {
20228 00cf2847355d Deprecate Array::nelem() and Range::nelem() in favour of ::numel(). Carnë Draug <carandraug@octave.org> parents: 19697 diff changeset	465 Range result (r.base () * x, r.limit () * x, r.inc () * x, r.numel ());
00cf2847355d Deprecate Array::nelem() and Range::nelem() in favour of ::numel(). Carnë Draug <carandraug@octave.org> parents: 19697 diff changeset	466 if (result.rng_numel < 0)
8971 967a692ddfe2 fix range arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8920 diff changeset	467 result.cache = r.matrix_value () * x;
967a692ddfe2 fix range arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8920 diff changeset	468
967a692ddfe2 fix range arithmetics Jaroslav Hajek <highegg@gmail.com> parents: 8920 diff changeset	469 return result;
8553 c7ff200e45f5 optimize range-scalar ops Jaroslav Hajek <highegg@gmail.com> parents: 7620 diff changeset	470 }
c7ff200e45f5 optimize range-scalar ops Jaroslav Hajek <highegg@gmail.com> parents: 7620 diff changeset	471
c7ff200e45f5 optimize range-scalar ops Jaroslav Hajek <highegg@gmail.com> parents: 7620 diff changeset	472
1546 a272c4056bab [project @ 1995-10-07 03:38:40 by jwe] jwe parents: 1367 diff changeset	473 // C See Knuth, Art Of Computer Programming, Vol. 1, Problem 1.2.4-5.
a272c4056bab [project @ 1995-10-07 03:38:40 by jwe] jwe parents: 1367 diff changeset	474 // C
a272c4056bab [project @ 1995-10-07 03:38:40 by jwe] jwe parents: 1367 diff changeset	475 // C===Tolerant FLOOR function.
a272c4056bab [project @ 1995-10-07 03:38:40 by jwe] jwe parents: 1367 diff changeset	476 // C
a272c4056bab [project @ 1995-10-07 03:38:40 by jwe] jwe parents: 1367 diff changeset	477 // C X - is given as a Double Precision argument to be operated on.
a272c4056bab [project @ 1995-10-07 03:38:40 by jwe] jwe parents: 1367 diff changeset	478 // C It is assumed that X is represented with M mantissa bits.
a272c4056bab [project @ 1995-10-07 03:38:40 by jwe] jwe parents: 1367 diff changeset	479 // C CT - is given as a Comparison Tolerance such that
a272c4056bab [project @ 1995-10-07 03:38:40 by jwe] jwe parents: 1367 diff changeset	480 // C 0.LT.CT.LE.3-SQRT(5)/2. If the relative difference between
a272c4056bab [project @ 1995-10-07 03:38:40 by jwe] jwe parents: 1367 diff changeset	481 // C X and A whole number is less than CT, then TFLOOR is
a272c4056bab [project @ 1995-10-07 03:38:40 by jwe] jwe parents: 1367 diff changeset	482 // C returned as this whole number. By treating the
a272c4056bab [project @ 1995-10-07 03:38:40 by jwe] jwe parents: 1367 diff changeset	483 // C floating-point numbers as a finite ordered set note that
a272c4056bab [project @ 1995-10-07 03:38:40 by jwe] jwe parents: 1367 diff changeset	484 // C the heuristic EPS=2.*(-(M-1)) and CT=3EPS causes
a272c4056bab [project @ 1995-10-07 03:38:40 by jwe] jwe parents: 1367 diff changeset	485 // C arguments of TFLOOR/TCEIL to be treated as whole numbers
a272c4056bab [project @ 1995-10-07 03:38:40 by jwe] jwe parents: 1367 diff changeset	486 // C if they are exactly whole numbers or are immediately
a272c4056bab [project @ 1995-10-07 03:38:40 by jwe] jwe parents: 1367 diff changeset	487 // C adjacent to whole number representations. Since EPS, the
a272c4056bab [project @ 1995-10-07 03:38:40 by jwe] jwe parents: 1367 diff changeset	488 // C "distance" between floating-point numbers on the unit
a272c4056bab [project @ 1995-10-07 03:38:40 by jwe] jwe parents: 1367 diff changeset	489 // C interval, and M, the number of bits in X'S mantissa, exist
a272c4056bab [project @ 1995-10-07 03:38:40 by jwe] jwe parents: 1367 diff changeset	490 // C on every floating-point computer, TFLOOR/TCEIL are
a272c4056bab [project @ 1995-10-07 03:38:40 by jwe] jwe parents: 1367 diff changeset	491 // C consistently definable on every floating-point computer.
a272c4056bab [project @ 1995-10-07 03:38:40 by jwe] jwe parents: 1367 diff changeset	492 // C
a272c4056bab [project @ 1995-10-07 03:38:40 by jwe] jwe parents: 1367 diff changeset	493 // C For more information see the following references:
a272c4056bab [project @ 1995-10-07 03:38:40 by jwe] jwe parents: 1367 diff changeset	494 // C (1) P. E. Hagerty, "More On Fuzzy Floor And Ceiling," APL QUOTE
a272c4056bab [project @ 1995-10-07 03:38:40 by jwe] jwe parents: 1367 diff changeset	495 // C QUAD 8(4):20-24, June 1978. Note that TFLOOR=FL5.
a272c4056bab [project @ 1995-10-07 03:38:40 by jwe] jwe parents: 1367 diff changeset	496 // C (2) L. M. Breed, "Definitions For Fuzzy Floor And Ceiling", APL
a272c4056bab [project @ 1995-10-07 03:38:40 by jwe] jwe parents: 1367 diff changeset	497 // C QUOTE QUAD 8(3):16-23, March 1978. This paper cites FL1 through
a272c4056bab [project @ 1995-10-07 03:38:40 by jwe] jwe parents: 1367 diff changeset	498 // C FL5, the history of five years of evolutionary development of
a272c4056bab [project @ 1995-10-07 03:38:40 by jwe] jwe parents: 1367 diff changeset	499 // C FL5 - the seven lines of code below - by open collaboration
a272c4056bab [project @ 1995-10-07 03:38:40 by jwe] jwe parents: 1367 diff changeset	500 // C and corroboration of the mathematical-computing community.
a272c4056bab [project @ 1995-10-07 03:38:40 by jwe] jwe parents: 1367 diff changeset	501 // C
a272c4056bab [project @ 1995-10-07 03:38:40 by jwe] jwe parents: 1367 diff changeset	502 // C Penn State University Center for Academic Computing
a272c4056bab [project @ 1995-10-07 03:38:40 by jwe] jwe parents: 1367 diff changeset	503 // C H. D. Knoble - August, 1978.
a272c4056bab [project @ 1995-10-07 03:38:40 by jwe] jwe parents: 1367 diff changeset	504
a272c4056bab [project @ 1995-10-07 03:38:40 by jwe] jwe parents: 1367 diff changeset	505 static inline double
a272c4056bab [project @ 1995-10-07 03:38:40 by jwe] jwe parents: 1367 diff changeset	506 tfloor (double x, double ct)
a272c4056bab [project @ 1995-10-07 03:38:40 by jwe] jwe parents: 1367 diff changeset	507 {
a272c4056bab [project @ 1995-10-07 03:38:40 by jwe] jwe parents: 1367 diff changeset	508 // C---------FLOOR(X) is the largest integer algebraically less than
a272c4056bab [project @ 1995-10-07 03:38:40 by jwe] jwe parents: 1367 diff changeset	509 // C or equal to X; that is, the unfuzzy FLOOR function.
a272c4056bab [project @ 1995-10-07 03:38:40 by jwe] jwe parents: 1367 diff changeset	510
a272c4056bab [project @ 1995-10-07 03:38:40 by jwe] jwe parents: 1367 diff changeset	511 // DINT (X) = X - DMOD (X, 1.0);
a272c4056bab [project @ 1995-10-07 03:38:40 by jwe] jwe parents: 1367 diff changeset	512 // FLOOR (X) = DINT (X) - DMOD (2.0 + DSIGN (1.0, X), 3.0);
a272c4056bab [project @ 1995-10-07 03:38:40 by jwe] jwe parents: 1367 diff changeset	513
a272c4056bab [project @ 1995-10-07 03:38:40 by jwe] jwe parents: 1367 diff changeset	514 // C---------Hagerty's FL5 function follows...
a272c4056bab [project @ 1995-10-07 03:38:40 by jwe] jwe parents: 1367 diff changeset	515
a272c4056bab [project @ 1995-10-07 03:38:40 by jwe] jwe parents: 1367 diff changeset	516 double q = 1.0;
a272c4056bab [project @ 1995-10-07 03:38:40 by jwe] jwe parents: 1367 diff changeset	517
a272c4056bab [project @ 1995-10-07 03:38:40 by jwe] jwe parents: 1367 diff changeset	518 if (x < 0.0)
a272c4056bab [project @ 1995-10-07 03:38:40 by jwe] jwe parents: 1367 diff changeset	519 q = 1.0 - ct;
a272c4056bab [project @ 1995-10-07 03:38:40 by jwe] jwe parents: 1367 diff changeset	520
a272c4056bab [project @ 1995-10-07 03:38:40 by jwe] jwe parents: 1367 diff changeset	521 double rmax = q / (2.0 - ct);
a272c4056bab [project @ 1995-10-07 03:38:40 by jwe] jwe parents: 1367 diff changeset	522
11450 5eb10763069f substitute and use LAPACK_LIBS in mkoctfile script John W. Eaton <jwe@octave.org> parents: 10366 diff changeset	523 double t1 = 1.0 + gnulib::floor (x);
1546 a272c4056bab [project @ 1995-10-07 03:38:40 by jwe] jwe parents: 1367 diff changeset	524 t1 = (ct / q) * (t1 < 0.0 ? -t1 : t1);
a272c4056bab [project @ 1995-10-07 03:38:40 by jwe] jwe parents: 1367 diff changeset	525 t1 = rmax < t1 ? rmax : t1;
a272c4056bab [project @ 1995-10-07 03:38:40 by jwe] jwe parents: 1367 diff changeset	526 t1 = ct > t1 ? ct : t1;
11450 5eb10763069f substitute and use LAPACK_LIBS in mkoctfile script John W. Eaton <jwe@octave.org> parents: 10366 diff changeset	527 t1 = gnulib::floor (x + t1);
1546 a272c4056bab [project @ 1995-10-07 03:38:40 by jwe] jwe parents: 1367 diff changeset	528
1555 6935e817fd25 [project @ 1995-10-11 05:49:55 by jwe] jwe parents: 1548 diff changeset	529 if (x <= 0.0 \|\| (t1 - x) < rmax)
1546 a272c4056bab [project @ 1995-10-07 03:38:40 by jwe] jwe parents: 1367 diff changeset	530 return t1;
a272c4056bab [project @ 1995-10-07 03:38:40 by jwe] jwe parents: 1367 diff changeset	531 else
a272c4056bab [project @ 1995-10-07 03:38:40 by jwe] jwe parents: 1367 diff changeset	532 return t1 - 1.0;
a272c4056bab [project @ 1995-10-07 03:38:40 by jwe] jwe parents: 1367 diff changeset	533 }
a272c4056bab [project @ 1995-10-07 03:38:40 by jwe] jwe parents: 1367 diff changeset	534
a272c4056bab [project @ 1995-10-07 03:38:40 by jwe] jwe parents: 1367 diff changeset	535 static inline double
a272c4056bab [project @ 1995-10-07 03:38:40 by jwe] jwe parents: 1367 diff changeset	536 tceil (double x, double ct)
a272c4056bab [project @ 1995-10-07 03:38:40 by jwe] jwe parents: 1367 diff changeset	537 {
a272c4056bab [project @ 1995-10-07 03:38:40 by jwe] jwe parents: 1367 diff changeset	538 return -tfloor (-x, ct);
a272c4056bab [project @ 1995-10-07 03:38:40 by jwe] jwe parents: 1367 diff changeset	539 }
a272c4056bab [project @ 1995-10-07 03:38:40 by jwe] jwe parents: 1367 diff changeset	540
3753 f751e43de300 [project @ 2000-12-14 03:01:23 by jwe] jwe parents: 3751 diff changeset	541 static inline bool
17769 49a5a4be04a1 maint: Use GNU style coding conventions for code in liboctave/ Rik <rik@octave.org> parents: 17744 diff changeset	542 teq (double u, double v,
49a5a4be04a1 maint: Use GNU style coding conventions for code in liboctave/ Rik <rik@octave.org> parents: 17744 diff changeset	543 double ct = 3.0 * std::numeric_limits<double>::epsilon ())
3753 f751e43de300 [project @ 2000-12-14 03:01:23 by jwe] jwe parents: 3751 diff changeset	544 {
f751e43de300 [project @ 2000-12-14 03:01:23 by jwe] jwe parents: 3751 diff changeset	545 double tu = fabs (u);
f751e43de300 [project @ 2000-12-14 03:01:23 by jwe] jwe parents: 3751 diff changeset	546 double tv = fabs (v);
f751e43de300 [project @ 2000-12-14 03:01:23 by jwe] jwe parents: 3751 diff changeset	547
f751e43de300 [project @ 2000-12-14 03:01:23 by jwe] jwe parents: 3751 diff changeset	548 return fabs (u - v) < ((tu > tv ? tu : tv) * ct);
f751e43de300 [project @ 2000-12-14 03:01:23 by jwe] jwe parents: 3751 diff changeset	549 }
f751e43de300 [project @ 2000-12-14 03:01:23 by jwe] jwe parents: 3751 diff changeset	550
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5105 diff changeset	551 octave_idx_type
20228 00cf2847355d Deprecate Array::nelem() and Range::nelem() in favour of ::numel(). Carnë Draug <carandraug@octave.org> parents: 19697 diff changeset	552 Range::numel_internal (void) const
1360 7eb93d12654c [project @ 1995-09-05 21:51:54 by jwe] jwe parents: 1315 diff changeset	553 {
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5105 diff changeset	554 octave_idx_type retval = -1;
3 9a4c07481e61 [project @ 1993-08-08 01:20:23 by jwe] jwe parents: diff changeset	555
3858 de05e6bdf897 [project @ 2001-11-08 19:34:22 by jwe] jwe parents: 3753 diff changeset	556 if (rng_inc == 0
de05e6bdf897 [project @ 2001-11-08 19:34:22 by jwe] jwe parents: 3753 diff changeset	557 \|\| (rng_limit > rng_base && rng_inc < 0)
de05e6bdf897 [project @ 2001-11-08 19:34:22 by jwe] jwe parents: 3753 diff changeset	558 \|\| (rng_limit < rng_base && rng_inc > 0))
de05e6bdf897 [project @ 2001-11-08 19:34:22 by jwe] jwe parents: 3753 diff changeset	559 {
de05e6bdf897 [project @ 2001-11-08 19:34:22 by jwe] jwe parents: 3753 diff changeset	560 retval = 0;
de05e6bdf897 [project @ 2001-11-08 19:34:22 by jwe] jwe parents: 3753 diff changeset	561 }
de05e6bdf897 [project @ 2001-11-08 19:34:22 by jwe] jwe parents: 3753 diff changeset	562 else
de05e6bdf897 [project @ 2001-11-08 19:34:22 by jwe] jwe parents: 3753 diff changeset	563 {
15220 61822c866ba1 use std::numeric_limits<T>::epsilon in C++ code John W. Eaton <jwe@octave.org> parents: 14138 diff changeset	564 double ct = 3.0 * std::numeric_limits<double>::epsilon ();
3 9a4c07481e61 [project @ 1993-08-08 01:20:23 by jwe] jwe parents: diff changeset	565
3858 de05e6bdf897 [project @ 2001-11-08 19:34:22 by jwe] jwe parents: 3753 diff changeset	566 double tmp = tfloor ((rng_limit - rng_base + rng_inc) / rng_inc, ct);
de05e6bdf897 [project @ 2001-11-08 19:34:22 by jwe] jwe parents: 3753 diff changeset	567
17769 49a5a4be04a1 maint: Use GNU style coding conventions for code in liboctave/ Rik <rik@octave.org> parents: 17744 diff changeset	568 octave_idx_type n_elt = (tmp > 0.0 ? static_cast<octave_idx_type> (tmp)
49a5a4be04a1 maint: Use GNU style coding conventions for code in liboctave/ Rik <rik@octave.org> parents: 17744 diff changeset	569 : 0);
398 167ea9ebd5a0 [project @ 1994-04-06 18:41:44 by jwe] jwe parents: 238 diff changeset	570
3858 de05e6bdf897 [project @ 2001-11-08 19:34:22 by jwe] jwe parents: 3753 diff changeset	571 // If the final element that we would compute for the range is
de05e6bdf897 [project @ 2001-11-08 19:34:22 by jwe] jwe parents: 3753 diff changeset	572 // equal to the limit of the range, or is an adjacent floating
de05e6bdf897 [project @ 2001-11-08 19:34:22 by jwe] jwe parents: 3753 diff changeset	573 // point number, accept it. Otherwise, try a range with one
de05e6bdf897 [project @ 2001-11-08 19:34:22 by jwe] jwe parents: 3753 diff changeset	574 // fewer element. If that fails, try again with one more
de05e6bdf897 [project @ 2001-11-08 19:34:22 by jwe] jwe parents: 3753 diff changeset	575 // element.
de05e6bdf897 [project @ 2001-11-08 19:34:22 by jwe] jwe parents: 3753 diff changeset	576 //
de05e6bdf897 [project @ 2001-11-08 19:34:22 by jwe] jwe parents: 3753 diff changeset	577 // I'm not sure this is very good, but it seems to work better than
de05e6bdf897 [project @ 2001-11-08 19:34:22 by jwe] jwe parents: 3753 diff changeset	578 // just using tfloor as above. For example, without it, the
de05e6bdf897 [project @ 2001-11-08 19:34:22 by jwe] jwe parents: 3753 diff changeset	579 // expression 1.8:0.05:1.9 fails to produce the expected result of
de05e6bdf897 [project @ 2001-11-08 19:34:22 by jwe] jwe parents: 3753 diff changeset	580 // [1.8, 1.85, 1.9].
3753 f751e43de300 [project @ 2000-12-14 03:01:23 by jwe] jwe parents: 3751 diff changeset	581
3858 de05e6bdf897 [project @ 2001-11-08 19:34:22 by jwe] jwe parents: 3753 diff changeset	582 if (! teq (rng_base + (n_elt - 1) * rng_inc, rng_limit))
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	583 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	584 if (teq (rng_base + (n_elt - 2) * rng_inc, rng_limit))
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	585 n_elt--;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	586 else if (teq (rng_base + n_elt * rng_inc, rng_limit))
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	587 n_elt++;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	588 }
3858 de05e6bdf897 [project @ 2001-11-08 19:34:22 by jwe] jwe parents: 3753 diff changeset	589
17769 49a5a4be04a1 maint: Use GNU style coding conventions for code in liboctave/ Rik <rik@octave.org> parents: 17744 diff changeset	590 retval = (n_elt < std::numeric_limits<octave_idx_type>::max () - 1)
49a5a4be04a1 maint: Use GNU style coding conventions for code in liboctave/ Rik <rik@octave.org> parents: 17744 diff changeset	591 ? n_elt : -1;
3753 f751e43de300 [project @ 2000-12-14 03:01:23 by jwe] jwe parents: 3751 diff changeset	592 }
f751e43de300 [project @ 2000-12-14 03:01:23 by jwe] jwe parents: 3751 diff changeset	593
3858 de05e6bdf897 [project @ 2001-11-08 19:34:22 by jwe] jwe parents: 3753 diff changeset	594 return retval;
3 9a4c07481e61 [project @ 1993-08-08 01:20:23 by jwe] jwe parents: diff changeset	595 }

Mercurial > octave

annotate liboctave/array/Range.cc @ 21229:a83e7a384ee0