octave-nkf: src/DLD-FUNCTIONS/lsode.cc annotate

annotate src/DLD-FUNCTIONS/lsode.cc @ 10840:89f4d7e294cc

Grammarcheck .cc files

author	Rik <octave@nomad.inbox5.com>
date	Sat, 31 Jul 2010 11:18:11 -0700
parents	d0ce5e973937
children	a4f482e66b65

rev	line source
2928 295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	1 /*
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	2
7017 a1dbe9d80eee [project @ 2007-10-12 21:27:11 by jwe] jwe parents: 7016 diff changeset	3 Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2005,
8920 eb63fbe60fab update copyright notices John W. Eaton <jwe@octave.org> parents: 8787 diff changeset	4 2006, 2007, 2008, 2009 John W. Eaton
2928 295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	5
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	6 This file is part of Octave.
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	7
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	8 Octave is free software; you can redistribute it and/or modify it
295f037b4b3e [project @ 1997-05-05 05:32:33 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: 7001 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: 7001 diff changeset	11 option) any later version.
2928 295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	12
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	13 Octave is distributed in the hope that it will be useful, but WITHOUT
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	16 for more details.
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	17
295f037b4b3e [project @ 1997-05-05 05:32:33 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: 7001 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: 7001 diff changeset	20 <http://www.gnu.org/licenses/>.
2928 295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	21
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	22 */
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	23
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	24 #ifdef HAVE_CONFIG_H
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	25 #include <config.h>
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	26 #endif
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	27
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	28 #include <string>
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	29
3567 dd8998699aa8 [project @ 2000-02-03 09:54:28 by jwe] jwe parents: 3544 diff changeset	30 #include <iomanip>
3523 b80bbb43a1a9 [project @ 2000-02-02 10:25:52 by jwe] jwe parents: 3419 diff changeset	31 #include <iostream>
2928 295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	32
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	33 #include "LSODE.h"
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	34 #include "lo-mappers.h"
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	35
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	36 #include "defun-dld.h"
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	37 #include "error.h"
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	38 #include "gripes.h"
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	39 #include "oct-obj.h"
2968 e330cb788508 [project @ 1997-05-15 17:40:29 by jwe] jwe parents: 2928 diff changeset	40 #include "ov-fcn.h"
5729 e065f7c18bdc [project @ 2006-04-03 19:03:30 by jwe] jwe parents: 5694 diff changeset	41 #include "ov-cell.h"
2928 295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	42 #include "pager.h"
3952 945e8c160191 [project @ 2002-05-23 17:18:12 by jwe] jwe parents: 3920 diff changeset	43 #include "pr-output.h"
3243 dd00769643ae [project @ 1999-05-28 04:19:00 by jwe] jwe parents: 3131 diff changeset	44 #include "unwind-prot.h"
2928 295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	45 #include "utils.h"
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	46 #include "variables.h"
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	47
3998 f6df65db67f9 [project @ 2002-07-24 18:10:39 by jwe] jwe parents: 3997 diff changeset	48 #include "LSODE-opts.cc"
f6df65db67f9 [project @ 2002-07-24 18:10:39 by jwe] jwe parents: 3997 diff changeset	49
2928 295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	50 // Global pointer for user defined function required by lsode.
2968 e330cb788508 [project @ 1997-05-15 17:40:29 by jwe] jwe parents: 2928 diff changeset	51 static octave_function *lsode_fcn;
2928 295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	52
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	53 // Global pointer for optional user defined jacobian function used by lsode.
2968 e330cb788508 [project @ 1997-05-15 17:40:29 by jwe] jwe parents: 2928 diff changeset	54 static octave_function *lsode_jac;
2928 295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	55
4140 303b28a7a7e4 [project @ 2002-11-01 02:53:13 by jwe] jwe parents: 4122 diff changeset	56 // Have we warned about imaginary values returned from user function?
303b28a7a7e4 [project @ 2002-11-01 02:53:13 by jwe] jwe parents: 4122 diff changeset	57 static bool warned_fcn_imaginary = false;
303b28a7a7e4 [project @ 2002-11-01 02:53:13 by jwe] jwe parents: 4122 diff changeset	58 static bool warned_jac_imaginary = false;
303b28a7a7e4 [project @ 2002-11-01 02:53:13 by jwe] jwe parents: 4122 diff changeset	59
3243 dd00769643ae [project @ 1999-05-28 04:19:00 by jwe] jwe parents: 3131 diff changeset	60 // Is this a recursive call?
dd00769643ae [project @ 1999-05-28 04:19:00 by jwe] jwe parents: 3131 diff changeset	61 static int call_depth = 0;
dd00769643ae [project @ 1999-05-28 04:19:00 by jwe] jwe parents: 3131 diff changeset	62
2928 295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	63 ColumnVector
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	64 lsode_user_function (const ColumnVector& x, double t)
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	65 {
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	66 ColumnVector retval;
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	67
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	68 octave_value_list args;
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	69 args(1) = t;
4628 c0121a3b9cbe [project @ 2003-11-17 20:19:07 by jwe] jwe parents: 4140 diff changeset	70 args(0) = x;
2928 295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	71
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	72 if (lsode_fcn)
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	73 {
3544 71bd2d124119 [project @ 2000-02-02 21:02:31 by jwe] jwe parents: 3523 diff changeset	74 octave_value_list tmp = lsode_fcn->do_multi_index_op (1, args);
2928 295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	75
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	76 if (error_state)
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	77 {
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	78 gripe_user_supplied_eval ("lsode");
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	79 return retval;
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	80 }
2928 295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	81
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	82 if (tmp.length () > 0 && tmp(0).is_defined ())
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	83 {
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	84 if (! warned_fcn_imaginary && tmp(0).is_complex_type ())
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	85 {
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	86 warning ("lsode: ignoring imaginary part returned from user-supplied function");
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	87 warned_fcn_imaginary = true;
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	88 }
4140 303b28a7a7e4 [project @ 2002-11-01 02:53:13 by jwe] jwe parents: 4122 diff changeset	89
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	90 retval = ColumnVector (tmp(0).vector_value ());
2928 295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	91
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	92 if (error_state \|\| retval.length () == 0)
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	93 gripe_user_supplied_eval ("lsode");
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	94 }
2928 295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	95 else
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	96 gripe_user_supplied_eval ("lsode");
2928 295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	97 }
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	98
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	99 return retval;
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	100 }
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	101
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	102 Matrix
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	103 lsode_user_jacobian (const ColumnVector& x, double t)
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	104 {
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	105 Matrix retval;
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	106
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	107 octave_value_list args;
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	108 args(1) = t;
4628 c0121a3b9cbe [project @ 2003-11-17 20:19:07 by jwe] jwe parents: 4140 diff changeset	109 args(0) = x;
2928 295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	110
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	111 if (lsode_jac)
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	112 {
3544 71bd2d124119 [project @ 2000-02-02 21:02:31 by jwe] jwe parents: 3523 diff changeset	113 octave_value_list tmp = lsode_jac->do_multi_index_op (1, args);
2928 295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	114
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	115 if (error_state)
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	116 {
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	117 gripe_user_supplied_eval ("lsode");
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	118 return retval;
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	119 }
2928 295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	120
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	121 if (tmp.length () > 0 && tmp(0).is_defined ())
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	122 {
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	123 if (! warned_jac_imaginary && tmp(0).is_complex_type ())
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	124 {
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	125 warning ("lsode: ignoring imaginary part returned from user-supplied jacobian function");
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	126 warned_jac_imaginary = true;
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	127 }
4140 303b28a7a7e4 [project @ 2002-11-01 02:53:13 by jwe] jwe parents: 4122 diff changeset	128
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	129 retval = tmp(0).matrix_value ();
2928 295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	130
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	131 if (error_state \|\| retval.length () == 0)
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	132 gripe_user_supplied_eval ("lsode");
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	133 }
2928 295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	134 else
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	135 gripe_user_supplied_eval ("lsode");
2928 295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	136 }
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	137
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	138 return retval;
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	139 }
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	140
3323 511caaa5e98e [project @ 1999-10-27 02:21:46 by jwe] jwe parents: 3321 diff changeset	141 #define LSODE_ABORT() \
10066 2cd940306a06 make unwind_protect frames local Jaroslav Hajek <highegg@gmail.com> parents: 9377 diff changeset	142 return retval
3323 511caaa5e98e [project @ 1999-10-27 02:21:46 by jwe] jwe parents: 3321 diff changeset	143
511caaa5e98e [project @ 1999-10-27 02:21:46 by jwe] jwe parents: 3321 diff changeset	144 #define LSODE_ABORT1(msg) \
511caaa5e98e [project @ 1999-10-27 02:21:46 by jwe] jwe parents: 3321 diff changeset	145 do \
511caaa5e98e [project @ 1999-10-27 02:21:46 by jwe] jwe parents: 3321 diff changeset	146 { \
3747 50f30e40abca [project @ 2000-12-07 05:47:06 by jwe] jwe parents: 3568 diff changeset	147 ::error ("lsode: " msg); \
3323 511caaa5e98e [project @ 1999-10-27 02:21:46 by jwe] jwe parents: 3321 diff changeset	148 LSODE_ABORT (); \
511caaa5e98e [project @ 1999-10-27 02:21:46 by jwe] jwe parents: 3321 diff changeset	149 } \
511caaa5e98e [project @ 1999-10-27 02:21:46 by jwe] jwe parents: 3321 diff changeset	150 while (0)
511caaa5e98e [project @ 1999-10-27 02:21:46 by jwe] jwe parents: 3321 diff changeset	151
511caaa5e98e [project @ 1999-10-27 02:21:46 by jwe] jwe parents: 3321 diff changeset	152 #define LSODE_ABORT2(fmt, arg) \
511caaa5e98e [project @ 1999-10-27 02:21:46 by jwe] jwe parents: 3321 diff changeset	153 do \
511caaa5e98e [project @ 1999-10-27 02:21:46 by jwe] jwe parents: 3321 diff changeset	154 { \
3747 50f30e40abca [project @ 2000-12-07 05:47:06 by jwe] jwe parents: 3568 diff changeset	155 ::error ("lsode: " fmt, arg); \
3323 511caaa5e98e [project @ 1999-10-27 02:21:46 by jwe] jwe parents: 3321 diff changeset	156 LSODE_ABORT (); \
511caaa5e98e [project @ 1999-10-27 02:21:46 by jwe] jwe parents: 3321 diff changeset	157 } \
511caaa5e98e [project @ 1999-10-27 02:21:46 by jwe] jwe parents: 3321 diff changeset	158 while (0)
511caaa5e98e [project @ 1999-10-27 02:21:46 by jwe] jwe parents: 3321 diff changeset	159
2928 295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	160 DEFUN_DLD (lsode, args, nargout,
3373 36405da8e173 [project @ 1999-11-23 20:54:17 by jwe] jwe parents: 3325 diff changeset	161 "-- texinfo --\n\
6755 55411ecc8d8b [project @ 2007-06-25 18:16:58 by jwe] jwe parents: 5823 diff changeset	162 @deftypefn {Loadable Function} {[@var{x}, @var{istate}, @var{msg}] =} lsode (@var{fcn}, @var{x_0}, @var{t}, @var{t_crit})\n\
4115 fc2048d4cd21 [project @ 2002-10-22 21:28:42 by jwe] jwe parents: 3998 diff changeset	163 Solve the set of differential equations\n\
fc2048d4cd21 [project @ 2002-10-22 21:28:42 by jwe] jwe parents: 3998 diff changeset	164 @tex\n\
fc2048d4cd21 [project @ 2002-10-22 21:28:42 by jwe] jwe parents: 3998 diff changeset	165 $$ {dx \\over dt} = f (x, t) $$\n\
fc2048d4cd21 [project @ 2002-10-22 21:28:42 by jwe] jwe parents: 3998 diff changeset	166 with\n\
fc2048d4cd21 [project @ 2002-10-22 21:28:42 by jwe] jwe parents: 3998 diff changeset	167 $$ x(t_0) = x_0 $$\n\
fc2048d4cd21 [project @ 2002-10-22 21:28:42 by jwe] jwe parents: 3998 diff changeset	168 @end tex\n\
8517 81d6ab3ac93c Allow documentation tobe built for other formats than tex and info sh@sh-laptop parents: 7562 diff changeset	169 @ifnottex\n\
4115 fc2048d4cd21 [project @ 2002-10-22 21:28:42 by jwe] jwe parents: 3998 diff changeset	170 \n\
fc2048d4cd21 [project @ 2002-10-22 21:28:42 by jwe] jwe parents: 3998 diff changeset	171 @example\n\
9064 7c02ec148a3c Check grammar on all .cc files Rik <rdrider0-list@yahoo.com> parents: 8920 diff changeset	172 @group\n\
4115 fc2048d4cd21 [project @ 2002-10-22 21:28:42 by jwe] jwe parents: 3998 diff changeset	173 dx\n\
fc2048d4cd21 [project @ 2002-10-22 21:28:42 by jwe] jwe parents: 3998 diff changeset	174 -- = f(x, t)\n\
4117 944b276d8856 [project @ 2002-10-23 01:06:46 by jwe] jwe parents: 4115 diff changeset	175 dt\n\
9064 7c02ec148a3c Check grammar on all .cc files Rik <rdrider0-list@yahoo.com> parents: 8920 diff changeset	176 @end group\n\
4115 fc2048d4cd21 [project @ 2002-10-22 21:28:42 by jwe] jwe parents: 3998 diff changeset	177 @end example\n\
fc2048d4cd21 [project @ 2002-10-22 21:28:42 by jwe] jwe parents: 3998 diff changeset	178 \n\
fc2048d4cd21 [project @ 2002-10-22 21:28:42 by jwe] jwe parents: 3998 diff changeset	179 with\n\
fc2048d4cd21 [project @ 2002-10-22 21:28:42 by jwe] jwe parents: 3998 diff changeset	180 \n\
fc2048d4cd21 [project @ 2002-10-22 21:28:42 by jwe] jwe parents: 3998 diff changeset	181 @example\n\
fc2048d4cd21 [project @ 2002-10-22 21:28:42 by jwe] jwe parents: 3998 diff changeset	182 x(t_0) = x_0\n\
fc2048d4cd21 [project @ 2002-10-22 21:28:42 by jwe] jwe parents: 3998 diff changeset	183 @end example\n\
fc2048d4cd21 [project @ 2002-10-22 21:28:42 by jwe] jwe parents: 3998 diff changeset	184 \n\
8517 81d6ab3ac93c Allow documentation tobe built for other formats than tex and info sh@sh-laptop parents: 7562 diff changeset	185 @end ifnottex\n\
4115 fc2048d4cd21 [project @ 2002-10-22 21:28:42 by jwe] jwe parents: 3998 diff changeset	186 The solution is returned in the matrix @var{x}, with each row\n\
fc2048d4cd21 [project @ 2002-10-22 21:28:42 by jwe] jwe parents: 3998 diff changeset	187 corresponding to an element of the vector @var{t}. The first element\n\
fc2048d4cd21 [project @ 2002-10-22 21:28:42 by jwe] jwe parents: 3998 diff changeset	188 of @var{t} should be @math{t_0} and should correspond to the initial\n\
fc2048d4cd21 [project @ 2002-10-22 21:28:42 by jwe] jwe parents: 3998 diff changeset	189 state of the system @var{x_0}, so that the first row of the output\n\
fc2048d4cd21 [project @ 2002-10-22 21:28:42 by jwe] jwe parents: 3998 diff changeset	190 is @var{x_0}.\n\
3373 36405da8e173 [project @ 1999-11-23 20:54:17 by jwe] jwe parents: 3325 diff changeset	191 \n\
8787 5b23faa8113c Documentation fixes. Olaf Till <olaf.till@uni-jena.de> parents: 8517 diff changeset	192 The first argument, @var{fcn}, is a string, inline, or function handle\n\
5b23faa8113c Documentation fixes. Olaf Till <olaf.till@uni-jena.de> parents: 8517 diff changeset	193 that names the function @math{f} to call to compute the vector of right\n\
5b23faa8113c Documentation fixes. Olaf Till <olaf.till@uni-jena.de> parents: 8517 diff changeset	194 hand sides for the set of equations. The function must have the form\n\
2928 295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	195 \n\
3373 36405da8e173 [project @ 1999-11-23 20:54:17 by jwe] jwe parents: 3325 diff changeset	196 @example\n\
36405da8e173 [project @ 1999-11-23 20:54:17 by jwe] jwe parents: 3325 diff changeset	197 @var{xdot} = f (@var{x}, @var{t})\n\
36405da8e173 [project @ 1999-11-23 20:54:17 by jwe] jwe parents: 3325 diff changeset	198 @end example\n\
2928 295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	199 \n\
3373 36405da8e173 [project @ 1999-11-23 20:54:17 by jwe] jwe parents: 3325 diff changeset	200 @noindent\n\
4115 fc2048d4cd21 [project @ 2002-10-22 21:28:42 by jwe] jwe parents: 3998 diff changeset	201 in which @var{xdot} and @var{x} are vectors and @var{t} is a scalar.\n\
fc2048d4cd21 [project @ 2002-10-22 21:28:42 by jwe] jwe parents: 3998 diff changeset	202 \n\
8787 5b23faa8113c Documentation fixes. Olaf Till <olaf.till@uni-jena.de> parents: 8517 diff changeset	203 If @var{fcn} is a two-element string array or a two-element cell array\n\
9067 8970b4b10e9f Cleanup documentation for quad.texi and diffeq.texi Rik <rdrider0-list@yahoo.com> parents: 9064 diff changeset	204 of strings, inline functions, or function handles, the first element names\n\
8787 5b23faa8113c Documentation fixes. Olaf Till <olaf.till@uni-jena.de> parents: 8517 diff changeset	205 the function @math{f} described above, and the second element names a\n\
5b23faa8113c Documentation fixes. Olaf Till <olaf.till@uni-jena.de> parents: 8517 diff changeset	206 function to compute the Jacobian of @math{f}. The Jacobian function\n\
5b23faa8113c Documentation fixes. Olaf Till <olaf.till@uni-jena.de> parents: 8517 diff changeset	207 must have the form\n\
4115 fc2048d4cd21 [project @ 2002-10-22 21:28:42 by jwe] jwe parents: 3998 diff changeset	208 \n\
fc2048d4cd21 [project @ 2002-10-22 21:28:42 by jwe] jwe parents: 3998 diff changeset	209 @example\n\
fc2048d4cd21 [project @ 2002-10-22 21:28:42 by jwe] jwe parents: 3998 diff changeset	210 @var{jac} = j (@var{x}, @var{t})\n\
fc2048d4cd21 [project @ 2002-10-22 21:28:42 by jwe] jwe parents: 3998 diff changeset	211 @end example\n\
fc2048d4cd21 [project @ 2002-10-22 21:28:42 by jwe] jwe parents: 3998 diff changeset	212 \n\
fc2048d4cd21 [project @ 2002-10-22 21:28:42 by jwe] jwe parents: 3998 diff changeset	213 in which @var{jac} is the matrix of partial derivatives\n\
fc2048d4cd21 [project @ 2002-10-22 21:28:42 by jwe] jwe parents: 3998 diff changeset	214 @tex\n\
fc2048d4cd21 [project @ 2002-10-22 21:28:42 by jwe] jwe parents: 3998 diff changeset	215 $$ J = {\\partial f_i \\over \\partial x_j} = \\left[\\matrix{\n\
fc2048d4cd21 [project @ 2002-10-22 21:28:42 by jwe] jwe parents: 3998 diff changeset	216 {\\partial f_1 \\over \\partial x_1}\n\
fc2048d4cd21 [project @ 2002-10-22 21:28:42 by jwe] jwe parents: 3998 diff changeset	217 & {\\partial f_1 \\over \\partial x_2}\n\
fc2048d4cd21 [project @ 2002-10-22 21:28:42 by jwe] jwe parents: 3998 diff changeset	218 & \\cdots\n\
fc2048d4cd21 [project @ 2002-10-22 21:28:42 by jwe] jwe parents: 3998 diff changeset	219 & {\\partial f_1 \\over \\partial x_N} \\cr\n\
fc2048d4cd21 [project @ 2002-10-22 21:28:42 by jwe] jwe parents: 3998 diff changeset	220 {\\partial f_2 \\over \\partial x_1}\n\
fc2048d4cd21 [project @ 2002-10-22 21:28:42 by jwe] jwe parents: 3998 diff changeset	221 & {\\partial f_2 \\over \\partial x_2}\n\
fc2048d4cd21 [project @ 2002-10-22 21:28:42 by jwe] jwe parents: 3998 diff changeset	222 & \\cdots\n\
fc2048d4cd21 [project @ 2002-10-22 21:28:42 by jwe] jwe parents: 3998 diff changeset	223 & {\\partial f_2 \\over \\partial x_N} \\cr\n\
fc2048d4cd21 [project @ 2002-10-22 21:28:42 by jwe] jwe parents: 3998 diff changeset	224 \\vdots & \\vdots & \\ddots & \\vdots \\cr\n\
fc2048d4cd21 [project @ 2002-10-22 21:28:42 by jwe] jwe parents: 3998 diff changeset	225 {\\partial f_3 \\over \\partial x_1}\n\
fc2048d4cd21 [project @ 2002-10-22 21:28:42 by jwe] jwe parents: 3998 diff changeset	226 & {\\partial f_3 \\over \\partial x_2}\n\
fc2048d4cd21 [project @ 2002-10-22 21:28:42 by jwe] jwe parents: 3998 diff changeset	227 & \\cdots\n\
fc2048d4cd21 [project @ 2002-10-22 21:28:42 by jwe] jwe parents: 3998 diff changeset	228 & {\\partial f_3 \\over \\partial x_N} \\cr}\\right]$$\n\
fc2048d4cd21 [project @ 2002-10-22 21:28:42 by jwe] jwe parents: 3998 diff changeset	229 @end tex\n\
8517 81d6ab3ac93c Allow documentation tobe built for other formats than tex and info sh@sh-laptop parents: 7562 diff changeset	230 @ifnottex\n\
4115 fc2048d4cd21 [project @ 2002-10-22 21:28:42 by jwe] jwe parents: 3998 diff changeset	231 \n\
fc2048d4cd21 [project @ 2002-10-22 21:28:42 by jwe] jwe parents: 3998 diff changeset	232 @example\n\
9064 7c02ec148a3c Check grammar on all .cc files Rik <rdrider0-list@yahoo.com> parents: 8920 diff changeset	233 @group\n\
4115 fc2048d4cd21 [project @ 2002-10-22 21:28:42 by jwe] jwe parents: 3998 diff changeset	234 \| df_1 df_1 df_1 \|\n\
fc2048d4cd21 [project @ 2002-10-22 21:28:42 by jwe] jwe parents: 3998 diff changeset	235 \| ---- ---- ... ---- \|\n\
fc2048d4cd21 [project @ 2002-10-22 21:28:42 by jwe] jwe parents: 3998 diff changeset	236 \| dx_1 dx_2 dx_N \|\n\
fc2048d4cd21 [project @ 2002-10-22 21:28:42 by jwe] jwe parents: 3998 diff changeset	237 \| \|\n\
fc2048d4cd21 [project @ 2002-10-22 21:28:42 by jwe] jwe parents: 3998 diff changeset	238 \| df_2 df_2 df_2 \|\n\
fc2048d4cd21 [project @ 2002-10-22 21:28:42 by jwe] jwe parents: 3998 diff changeset	239 \| ---- ---- ... ---- \|\n\
fc2048d4cd21 [project @ 2002-10-22 21:28:42 by jwe] jwe parents: 3998 diff changeset	240 df_i \| dx_1 dx_2 dx_N \|\n\
fc2048d4cd21 [project @ 2002-10-22 21:28:42 by jwe] jwe parents: 3998 diff changeset	241 jac = ---- = \| \|\n\
fc2048d4cd21 [project @ 2002-10-22 21:28:42 by jwe] jwe parents: 3998 diff changeset	242 dx_j \| . . . . \|\n\
fc2048d4cd21 [project @ 2002-10-22 21:28:42 by jwe] jwe parents: 3998 diff changeset	243 \| . . . . \|\n\
fc2048d4cd21 [project @ 2002-10-22 21:28:42 by jwe] jwe parents: 3998 diff changeset	244 \| . . . . \|\n\
fc2048d4cd21 [project @ 2002-10-22 21:28:42 by jwe] jwe parents: 3998 diff changeset	245 \| \|\n\
fc2048d4cd21 [project @ 2002-10-22 21:28:42 by jwe] jwe parents: 3998 diff changeset	246 \| df_N df_N df_N \|\n\
fc2048d4cd21 [project @ 2002-10-22 21:28:42 by jwe] jwe parents: 3998 diff changeset	247 \| ---- ---- ... ---- \|\n\
fc2048d4cd21 [project @ 2002-10-22 21:28:42 by jwe] jwe parents: 3998 diff changeset	248 \| dx_1 dx_2 dx_N \|\n\
9064 7c02ec148a3c Check grammar on all .cc files Rik <rdrider0-list@yahoo.com> parents: 8920 diff changeset	249 @end group\n\
4115 fc2048d4cd21 [project @ 2002-10-22 21:28:42 by jwe] jwe parents: 3998 diff changeset	250 @end example\n\
fc2048d4cd21 [project @ 2002-10-22 21:28:42 by jwe] jwe parents: 3998 diff changeset	251 \n\
8517 81d6ab3ac93c Allow documentation tobe built for other formats than tex and info sh@sh-laptop parents: 7562 diff changeset	252 @end ifnottex\n\
4115 fc2048d4cd21 [project @ 2002-10-22 21:28:42 by jwe] jwe parents: 3998 diff changeset	253 \n\
7001 8b0cfeb06365 [project @ 2007-10-10 18:02:59 by jwe] jwe parents: 6755 diff changeset	254 The second and third arguments specify the initial state of the system,\n\
4115 fc2048d4cd21 [project @ 2002-10-22 21:28:42 by jwe] jwe parents: 3998 diff changeset	255 @math{x_0}, and the initial value of the independent variable @math{t_0}.\n\
2928 295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	256 \n\
3373 36405da8e173 [project @ 1999-11-23 20:54:17 by jwe] jwe parents: 3325 diff changeset	257 The fourth argument is optional, and may be used to specify a set of\n\
36405da8e173 [project @ 1999-11-23 20:54:17 by jwe] jwe parents: 3325 diff changeset	258 times that the ODE solver should not integrate past. It is useful for\n\
36405da8e173 [project @ 1999-11-23 20:54:17 by jwe] jwe parents: 3325 diff changeset	259 avoiding difficulties with singularities and points where there is a\n\
36405da8e173 [project @ 1999-11-23 20:54:17 by jwe] jwe parents: 3325 diff changeset	260 discontinuity in the derivative.\n\
3964 3030cb6cb559 [project @ 2002-06-28 17:17:55 by jwe] jwe parents: 3959 diff changeset	261 \n\
4115 fc2048d4cd21 [project @ 2002-10-22 21:28:42 by jwe] jwe parents: 3998 diff changeset	262 After a successful computation, the value of @var{istate} will be 2\n\
10840 89f4d7e294cc Grammarcheck .cc files Rik <octave@nomad.inbox5.com> parents: 10155 diff changeset	263 (consistent with the Fortran version of @sc{lsode}).\n\
4115 fc2048d4cd21 [project @ 2002-10-22 21:28:42 by jwe] jwe parents: 3998 diff changeset	264 \n\
fc2048d4cd21 [project @ 2002-10-22 21:28:42 by jwe] jwe parents: 3998 diff changeset	265 If the computation is not successful, @var{istate} will be something\n\
fc2048d4cd21 [project @ 2002-10-22 21:28:42 by jwe] jwe parents: 3998 diff changeset	266 other than 2 and @var{msg} will contain additional information.\n\
fc2048d4cd21 [project @ 2002-10-22 21:28:42 by jwe] jwe parents: 3998 diff changeset	267 \n\
3964 3030cb6cb559 [project @ 2002-06-28 17:17:55 by jwe] jwe parents: 3959 diff changeset	268 You can use the function @code{lsode_options} to set optional\n\
3030cb6cb559 [project @ 2002-06-28 17:17:55 by jwe] jwe parents: 3959 diff changeset	269 parameters for @code{lsode}.\n\
5694 95d90f781ca8 [project @ 2006-03-20 18:29:20 by jwe] jwe parents: 5646 diff changeset	270 @seealso{daspk, dassl, dasrt}\n\
5646 2b20d1707f29 [project @ 2006-03-06 22:38:32 by jwe] jwe parents: 5307 diff changeset	271 @end deftypefn")
2928 295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	272 {
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	273 octave_value_list retval;
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	274
4140 303b28a7a7e4 [project @ 2002-11-01 02:53:13 by jwe] jwe parents: 4122 diff changeset	275 warned_fcn_imaginary = false;
303b28a7a7e4 [project @ 2002-11-01 02:53:13 by jwe] jwe parents: 4122 diff changeset	276 warned_jac_imaginary = false;
303b28a7a7e4 [project @ 2002-11-01 02:53:13 by jwe] jwe parents: 4122 diff changeset	277
10066 2cd940306a06 make unwind_protect frames local Jaroslav Hajek <highegg@gmail.com> parents: 9377 diff changeset	278 unwind_protect frame;
2928 295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	279
10066 2cd940306a06 make unwind_protect frames local Jaroslav Hajek <highegg@gmail.com> parents: 9377 diff changeset	280 frame.protect_var (call_depth);
3243 dd00769643ae [project @ 1999-05-28 04:19:00 by jwe] jwe parents: 3131 diff changeset	281 call_depth++;
dd00769643ae [project @ 1999-05-28 04:19:00 by jwe] jwe parents: 3131 diff changeset	282
dd00769643ae [project @ 1999-05-28 04:19:00 by jwe] jwe parents: 3131 diff changeset	283 if (call_depth > 1)
3323 511caaa5e98e [project @ 1999-10-27 02:21:46 by jwe] jwe parents: 3321 diff changeset	284 LSODE_ABORT1 ("invalid recursive call");
2928 295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	285
3243 dd00769643ae [project @ 1999-05-28 04:19:00 by jwe] jwe parents: 3131 diff changeset	286 int nargin = args.length ();
2928 295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	287
3959 5a848097fe4a [project @ 2002-05-24 17:58:16 by jwe] jwe parents: 3957 diff changeset	288 if (nargin > 2 && nargin < 5 && nargout < 4)
2928 295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	289 {
5729 e065f7c18bdc [project @ 2006-04-03 19:03:30 by jwe] jwe parents: 5694 diff changeset	290 std::string fcn_name, fname, jac_name, jname;
3991 48d2bc4a3729 [project @ 2002-07-16 17:46:50 by jwe] jwe parents: 3971 diff changeset	291 lsode_fcn = 0;
48d2bc4a3729 [project @ 2002-07-16 17:46:50 by jwe] jwe parents: 3971 diff changeset	292 lsode_jac = 0;
48d2bc4a3729 [project @ 2002-07-16 17:46:50 by jwe] jwe parents: 3971 diff changeset	293
3243 dd00769643ae [project @ 1999-05-28 04:19:00 by jwe] jwe parents: 3131 diff changeset	294 octave_value f_arg = args(0);
2928 295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	295
5729 e065f7c18bdc [project @ 2006-04-03 19:03:30 by jwe] jwe parents: 5694 diff changeset	296 if (f_arg.is_cell ())
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	297 {
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	298 Cell c = f_arg.cell_value ();
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	299 if (c.length() == 1)
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	300 f_arg = c(0);
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	301 else if (c.length() == 2)
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	302 {
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	303 if (c(0).is_function_handle () \|\| c(0).is_inline_function ())
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	304 lsode_fcn = c(0).function_value ();
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	305 else
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	306 {
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	307 fcn_name = unique_symbol_name ("__lsode_fcn__");
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	308 fname = "function y = ";
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	309 fname.append (fcn_name);
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	310 fname.append (" (x, t) y = ");
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	311 lsode_fcn = extract_function
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	312 (c(0), "lsode", fcn_name, fname, "; endfunction");
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	313 }
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	314
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	315 if (lsode_fcn)
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	316 {
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	317 if (c(1).is_function_handle () \|\| c(1).is_inline_function ())
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	318 lsode_jac = c(1).function_value ();
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	319 else
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	320 {
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	321 jac_name = unique_symbol_name ("__lsode_jac__");
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	322 jname = "function jac = ";
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	323 jname.append(jac_name);
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	324 jname.append (" (x, t) jac = ");
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	325 lsode_jac = extract_function
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	326 (c(1), "lsode", jac_name, jname, "; endfunction");
2928 295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	327
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	328 if (!lsode_jac)
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	329 {
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	330 if (fcn_name.length())
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	331 clear_function (fcn_name);
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	332 lsode_fcn = 0;
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	333 }
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	334 }
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	335 }
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	336 }
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	337 else
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	338 LSODE_ABORT1 ("incorrect number of elements in cell array");
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	339 }
2928 295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	340
5729 e065f7c18bdc [project @ 2006-04-03 19:03:30 by jwe] jwe parents: 5694 diff changeset	341 if (!lsode_fcn && ! f_arg.is_cell())
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	342 {
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	343 if (f_arg.is_function_handle () \|\| f_arg.is_inline_function ())
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	344 lsode_fcn = f_arg.function_value ();
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	345 else
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	346 {
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	347 switch (f_arg.rows ())
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	348 {
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	349 case 1:
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	350 do
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	351 {
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	352 fcn_name = unique_symbol_name ("__lsode_fcn__");
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	353 fname = "function y = ";
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	354 fname.append (fcn_name);
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	355 fname.append (" (x, t) y = ");
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	356 lsode_fcn = extract_function
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	357 (f_arg, "lsode", fcn_name, fname, "; endfunction");
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	358 }
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	359 while (0);
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	360 break;
2928 295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	361
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	362 case 2:
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	363 {
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	364 string_vector tmp = f_arg.all_strings ();
5729 e065f7c18bdc [project @ 2006-04-03 19:03:30 by jwe] jwe parents: 5694 diff changeset	365
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	366 if (! error_state)
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	367 {
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	368 fcn_name = unique_symbol_name ("__lsode_fcn__");
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	369 fname = "function y = ";
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	370 fname.append (fcn_name);
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	371 fname.append (" (x, t) y = ");
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	372 lsode_fcn = extract_function
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	373 (tmp(0), "lsode", fcn_name, fname, "; endfunction");
3243 dd00769643ae [project @ 1999-05-28 04:19:00 by jwe] jwe parents: 3131 diff changeset	374
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	375 if (lsode_fcn)
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	376 {
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	377 jac_name = unique_symbol_name ("__lsode_jac__");
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	378 jname = "function jac = ";
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	379 jname.append(jac_name);
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	380 jname.append (" (x, t) jac = ");
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	381 lsode_jac = extract_function
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	382 (tmp(1), "lsode", jac_name, jname,
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	383 "; endfunction");
5729 e065f7c18bdc [project @ 2006-04-03 19:03:30 by jwe] jwe parents: 5694 diff changeset	384
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	385 if (!lsode_jac)
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	386 {
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	387 if (fcn_name.length())
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	388 clear_function (fcn_name);
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	389 lsode_fcn = 0;
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	390 }
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	391 }
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	392 }
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	393 }
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	394 break;
2928 295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	395
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	396 default:
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	397 LSODE_ABORT1
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	398 ("first arg should be a string or 2-element string array");
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	399 }
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	400 }
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	401 }
2928 295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	402
3243 dd00769643ae [project @ 1999-05-28 04:19:00 by jwe] jwe parents: 3131 diff changeset	403 if (error_state \|\| ! lsode_fcn)
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	404 LSODE_ABORT ();
2928 295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	405
3419 e71b3d1dd327 [project @ 2000-01-12 05:23:34 by jwe] jwe parents: 3373 diff changeset	406 ColumnVector state (args(1).vector_value ());
2928 295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	407
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	408 if (error_state)
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	409 LSODE_ABORT1 ("expecting state vector as second argument");
3243 dd00769643ae [project @ 1999-05-28 04:19:00 by jwe] jwe parents: 3131 diff changeset	410
3419 e71b3d1dd327 [project @ 2000-01-12 05:23:34 by jwe] jwe parents: 3373 diff changeset	411 ColumnVector out_times (args(2).vector_value ());
3243 dd00769643ae [project @ 1999-05-28 04:19:00 by jwe] jwe parents: 3131 diff changeset	412
dd00769643ae [project @ 1999-05-28 04:19:00 by jwe] jwe parents: 3131 diff changeset	413 if (error_state)
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	414 LSODE_ABORT1 ("expecting output time vector as third argument");
2928 295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	415
3243 dd00769643ae [project @ 1999-05-28 04:19:00 by jwe] jwe parents: 3131 diff changeset	416 ColumnVector crit_times;
2928 295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	417
3243 dd00769643ae [project @ 1999-05-28 04:19:00 by jwe] jwe parents: 3131 diff changeset	418 int crit_times_set = 0;
dd00769643ae [project @ 1999-05-28 04:19:00 by jwe] jwe parents: 3131 diff changeset	419 if (nargin > 3)
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	420 {
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	421 crit_times = ColumnVector (args(3).vector_value ());
2928 295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	422
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	423 if (error_state)
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	424 LSODE_ABORT1 ("expecting critical time vector as fourth argument");
2928 295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	425
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	426 crit_times_set = 1;
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	427 }
2928 295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	428
3243 dd00769643ae [project @ 1999-05-28 04:19:00 by jwe] jwe parents: 3131 diff changeset	429 double tzero = out_times (0);
dd00769643ae [project @ 1999-05-28 04:19:00 by jwe] jwe parents: 3131 diff changeset	430
dd00769643ae [project @ 1999-05-28 04:19:00 by jwe] jwe parents: 3131 diff changeset	431 ODEFunc func (lsode_user_function);
dd00769643ae [project @ 1999-05-28 04:19:00 by jwe] jwe parents: 3131 diff changeset	432 if (lsode_jac)
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	433 func.set_jacobian_function (lsode_user_jacobian);
2928 295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	434
3243 dd00769643ae [project @ 1999-05-28 04:19:00 by jwe] jwe parents: 3131 diff changeset	435 LSODE ode (state, tzero, func);
dd00769643ae [project @ 1999-05-28 04:19:00 by jwe] jwe parents: 3131 diff changeset	436
4122 19a1626b8d57 [project @ 2002-10-23 22:10:53 by jwe] jwe parents: 4117 diff changeset	437 ode.set_options (lsode_opts);
3243 dd00769643ae [project @ 1999-05-28 04:19:00 by jwe] jwe parents: 3131 diff changeset	438
3859 890a7e4c1362 [project @ 2001-11-09 17:05:08 by jwe] jwe parents: 3747 diff changeset	439 Matrix output;
3243 dd00769643ae [project @ 1999-05-28 04:19:00 by jwe] jwe parents: 3131 diff changeset	440 if (crit_times_set)
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	441 output = ode.integrate (out_times, crit_times);
3243 dd00769643ae [project @ 1999-05-28 04:19:00 by jwe] jwe parents: 3131 diff changeset	442 else
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	443 output = ode.integrate (out_times);
3243 dd00769643ae [project @ 1999-05-28 04:19:00 by jwe] jwe parents: 3131 diff changeset	444
5729 e065f7c18bdc [project @ 2006-04-03 19:03:30 by jwe] jwe parents: 5694 diff changeset	445 if (fcn_name.length())
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	446 clear_function (fcn_name);
5729 e065f7c18bdc [project @ 2006-04-03 19:03:30 by jwe] jwe parents: 5694 diff changeset	447 if (jac_name.length())
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	448 clear_function (jac_name);
5729 e065f7c18bdc [project @ 2006-04-03 19:03:30 by jwe] jwe parents: 5694 diff changeset	449
3243 dd00769643ae [project @ 1999-05-28 04:19:00 by jwe] jwe parents: 3131 diff changeset	450 if (! error_state)
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	451 {
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	452 std::string msg = ode.error_message ();
3997 d4091aff6468 [project @ 2002-07-17 18:00:06 by jwe] jwe parents: 3991 diff changeset	453
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	454 retval(2) = msg;
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	455 retval(1) = static_cast<double> (ode.integration_state ());
3959 5a848097fe4a [project @ 2002-05-24 17:58:16 by jwe] jwe parents: 3957 diff changeset	456
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	457 if (ode.integration_ok ())
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	458 retval(0) = output;
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	459 else
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	460 {
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	461 retval(0) = Matrix ();
3959 5a848097fe4a [project @ 2002-05-24 17:58:16 by jwe] jwe parents: 3957 diff changeset	462
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	463 if (nargout < 2)
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	464 error ("lsode: %s", msg.c_str ());
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	465 }
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 10066 diff changeset	466 }
3243 dd00769643ae [project @ 1999-05-28 04:19:00 by jwe] jwe parents: 3131 diff changeset	467 }
2928 295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	468 else
5823 080c08b192d8 [project @ 2006-05-19 05:32:17 by jwe] jwe parents: 5729 diff changeset	469 print_usage ();
2928 295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	470
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	471 return retval;
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	472 }
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	473
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	474 /*
7562 c827f5673321 move tests to individual source files John W. Eaton <jwe@octave.org> parents: 7017 diff changeset	475
c827f5673321 move tests to individual source files John W. Eaton <jwe@octave.org> parents: 7017 diff changeset	476 %% dassl-1.m
c827f5673321 move tests to individual source files John W. Eaton <jwe@octave.org> parents: 7017 diff changeset	477 %%
c827f5673321 move tests to individual source files John W. Eaton <jwe@octave.org> parents: 7017 diff changeset	478 %% Test lsode() function
c827f5673321 move tests to individual source files John W. Eaton <jwe@octave.org> parents: 7017 diff changeset	479 %%
c827f5673321 move tests to individual source files John W. Eaton <jwe@octave.org> parents: 7017 diff changeset	480 %% Author: David Billinghurst (David.Billinghurst@riotinto.com.au)
c827f5673321 move tests to individual source files John W. Eaton <jwe@octave.org> parents: 7017 diff changeset	481 %% Comalco Research and Technology
c827f5673321 move tests to individual source files John W. Eaton <jwe@octave.org> parents: 7017 diff changeset	482 %% 20 May 1998
c827f5673321 move tests to individual source files John W. Eaton <jwe@octave.org> parents: 7017 diff changeset	483 %%
c827f5673321 move tests to individual source files John W. Eaton <jwe@octave.org> parents: 7017 diff changeset	484 %% Problem
c827f5673321 move tests to individual source files John W. Eaton <jwe@octave.org> parents: 7017 diff changeset	485 %%
c827f5673321 move tests to individual source files John W. Eaton <jwe@octave.org> parents: 7017 diff changeset	486 %% y1' = -y2, y1(0) = 1
c827f5673321 move tests to individual source files John W. Eaton <jwe@octave.org> parents: 7017 diff changeset	487 %% y2' = y1, y2(0) = 0
c827f5673321 move tests to individual source files John W. Eaton <jwe@octave.org> parents: 7017 diff changeset	488 %%
c827f5673321 move tests to individual source files John W. Eaton <jwe@octave.org> parents: 7017 diff changeset	489 %% Solution
c827f5673321 move tests to individual source files John W. Eaton <jwe@octave.org> parents: 7017 diff changeset	490 %%
c827f5673321 move tests to individual source files John W. Eaton <jwe@octave.org> parents: 7017 diff changeset	491 %% y1(t) = cos(t)
c827f5673321 move tests to individual source files John W. Eaton <jwe@octave.org> parents: 7017 diff changeset	492 %% y2(t) = sin(t)
c827f5673321 move tests to individual source files John W. Eaton <jwe@octave.org> parents: 7017 diff changeset	493 %!function xdot = f (x, t)
c827f5673321 move tests to individual source files John W. Eaton <jwe@octave.org> parents: 7017 diff changeset	494 %! xdot = [-x(2); x(1)];
c827f5673321 move tests to individual source files John W. Eaton <jwe@octave.org> parents: 7017 diff changeset	495 %!test
c827f5673321 move tests to individual source files John W. Eaton <jwe@octave.org> parents: 7017 diff changeset	496 %!
c827f5673321 move tests to individual source files John W. Eaton <jwe@octave.org> parents: 7017 diff changeset	497 %! x0 = [1; 0];
c827f5673321 move tests to individual source files John W. Eaton <jwe@octave.org> parents: 7017 diff changeset	498 %! xdot0 = [0; 1];
c827f5673321 move tests to individual source files John W. Eaton <jwe@octave.org> parents: 7017 diff changeset	499 %! t = (0:1:10)';
c827f5673321 move tests to individual source files John W. Eaton <jwe@octave.org> parents: 7017 diff changeset	500 %!
c827f5673321 move tests to individual source files John W. Eaton <jwe@octave.org> parents: 7017 diff changeset	501 %! tol = 500 * lsode_options ("relative tolerance");
c827f5673321 move tests to individual source files John W. Eaton <jwe@octave.org> parents: 7017 diff changeset	502 %!
c827f5673321 move tests to individual source files John W. Eaton <jwe@octave.org> parents: 7017 diff changeset	503 %!
c827f5673321 move tests to individual source files John W. Eaton <jwe@octave.org> parents: 7017 diff changeset	504 %! x = lsode ("f", x0, t);
c827f5673321 move tests to individual source files John W. Eaton <jwe@octave.org> parents: 7017 diff changeset	505 %!
c827f5673321 move tests to individual source files John W. Eaton <jwe@octave.org> parents: 7017 diff changeset	506 %! y = [cos(t), sin(t)];
c827f5673321 move tests to individual source files John W. Eaton <jwe@octave.org> parents: 7017 diff changeset	507 %!
c827f5673321 move tests to individual source files John W. Eaton <jwe@octave.org> parents: 7017 diff changeset	508 %! assert(all (all (abs (x - y) < tol)));
c827f5673321 move tests to individual source files John W. Eaton <jwe@octave.org> parents: 7017 diff changeset	509
c827f5673321 move tests to individual source files John W. Eaton <jwe@octave.org> parents: 7017 diff changeset	510 %!function xdotdot = f (x, t)
c827f5673321 move tests to individual source files John W. Eaton <jwe@octave.org> parents: 7017 diff changeset	511 %! xdotdot = [x(2); -x(1)];
c827f5673321 move tests to individual source files John W. Eaton <jwe@octave.org> parents: 7017 diff changeset	512 %!test
c827f5673321 move tests to individual source files John W. Eaton <jwe@octave.org> parents: 7017 diff changeset	513 %!
c827f5673321 move tests to individual source files John W. Eaton <jwe@octave.org> parents: 7017 diff changeset	514 %! x0 = [1; 0];
c827f5673321 move tests to individual source files John W. Eaton <jwe@octave.org> parents: 7017 diff changeset	515 %! t = [0; 2*pi];
c827f5673321 move tests to individual source files John W. Eaton <jwe@octave.org> parents: 7017 diff changeset	516 %! tol = 100 * dassl_options ("relative tolerance");
c827f5673321 move tests to individual source files John W. Eaton <jwe@octave.org> parents: 7017 diff changeset	517 %!
c827f5673321 move tests to individual source files John W. Eaton <jwe@octave.org> parents: 7017 diff changeset	518 %! x = lsode ("f", x0, t);
c827f5673321 move tests to individual source files John W. Eaton <jwe@octave.org> parents: 7017 diff changeset	519 %!
c827f5673321 move tests to individual source files John W. Eaton <jwe@octave.org> parents: 7017 diff changeset	520 %! y = [1, 0; 1, 0];
c827f5673321 move tests to individual source files John W. Eaton <jwe@octave.org> parents: 7017 diff changeset	521 %!
c827f5673321 move tests to individual source files John W. Eaton <jwe@octave.org> parents: 7017 diff changeset	522 %! assert(all (all (abs (x - y) < tol)));
c827f5673321 move tests to individual source files John W. Eaton <jwe@octave.org> parents: 7017 diff changeset	523
c827f5673321 move tests to individual source files John W. Eaton <jwe@octave.org> parents: 7017 diff changeset	524 %!function xdot = f (x, t)
c827f5673321 move tests to individual source files John W. Eaton <jwe@octave.org> parents: 7017 diff changeset	525 %! xdot = x;
c827f5673321 move tests to individual source files John W. Eaton <jwe@octave.org> parents: 7017 diff changeset	526 %!test
c827f5673321 move tests to individual source files John W. Eaton <jwe@octave.org> parents: 7017 diff changeset	527 %!
c827f5673321 move tests to individual source files John W. Eaton <jwe@octave.org> parents: 7017 diff changeset	528 %! x0 = 1;
c827f5673321 move tests to individual source files John W. Eaton <jwe@octave.org> parents: 7017 diff changeset	529 %! t = [0; 1];
c827f5673321 move tests to individual source files John W. Eaton <jwe@octave.org> parents: 7017 diff changeset	530 %! tol = 100 * dassl_options ("relative tolerance");
c827f5673321 move tests to individual source files John W. Eaton <jwe@octave.org> parents: 7017 diff changeset	531 %!
c827f5673321 move tests to individual source files John W. Eaton <jwe@octave.org> parents: 7017 diff changeset	532 %! x = lsode ("f", x0, t);
c827f5673321 move tests to individual source files John W. Eaton <jwe@octave.org> parents: 7017 diff changeset	533 %!
c827f5673321 move tests to individual source files John W. Eaton <jwe@octave.org> parents: 7017 diff changeset	534 %! y = [1; e];
c827f5673321 move tests to individual source files John W. Eaton <jwe@octave.org> parents: 7017 diff changeset	535 %!
c827f5673321 move tests to individual source files John W. Eaton <jwe@octave.org> parents: 7017 diff changeset	536 %! assert(all (all (abs (x - y) < tol)));
c827f5673321 move tests to individual source files John W. Eaton <jwe@octave.org> parents: 7017 diff changeset	537
c827f5673321 move tests to individual source files John W. Eaton <jwe@octave.org> parents: 7017 diff changeset	538 %!test
c827f5673321 move tests to individual source files John W. Eaton <jwe@octave.org> parents: 7017 diff changeset	539 %! lsode_options ("absolute tolerance", eps);
c827f5673321 move tests to individual source files John W. Eaton <jwe@octave.org> parents: 7017 diff changeset	540 %! assert(lsode_options ("absolute tolerance") == eps);
c827f5673321 move tests to individual source files John W. Eaton <jwe@octave.org> parents: 7017 diff changeset	541
c827f5673321 move tests to individual source files John W. Eaton <jwe@octave.org> parents: 7017 diff changeset	542 %!error <Invalid call to lsode_options.*> lsode_options ("foo", 1, 2);
c827f5673321 move tests to individual source files John W. Eaton <jwe@octave.org> parents: 7017 diff changeset	543
c827f5673321 move tests to individual source files John W. Eaton <jwe@octave.org> parents: 7017 diff changeset	544 */

Mercurial > octave-nkf

annotate src/DLD-FUNCTIONS/lsode.cc @ 10840:89f4d7e294cc