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annotate liboctave/DASSL.cc @ 14193:72aebe619641 stable rc-3-6-0-0

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3.6.0-rc0 release candidate * configure.ac (AC_INIT): Version is now 3.6.0-rc0. (OCTAVE_RELEASE_DATE): Now 2012-01-10. (OCTAVE_API_VERSION_NUMBER): Now 47.
author John W. Eaton <jwe@octave.org>
date Tue, 10 Jan 2012 16:43:41 -0500
parents 72c96de7a403
children 3d8ace26c5b4
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1 /*
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2
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72c96de7a403 maint: update copyright notices for 2012
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3 Copyright (C) 1993-2012 John W. Eaton
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4
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5 This file is part of Octave.
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6
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7 Octave is free software; you can redistribute it and/or modify it
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8 under the terms of the GNU General Public License as published by the
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9 Free Software Foundation; either version 3 of the License, or (at your
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10 option) any later version.
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11
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12 Octave is distributed in the hope that it will be useful, but WITHOUT
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13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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15 for more details.
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16
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17 You should have received a copy of the GNU General Public License
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18 along with Octave; see the file COPYING. If not, see
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19 <http://www.gnu.org/licenses/>.
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20
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21 */
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22
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23 #ifdef HAVE_CONFIG_H
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24 #include <config.h>
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25 #endif
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26
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27 #include <cfloat>
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28
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29 #include <sstream>
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30
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31 #include "DASSL.h"
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32 #include "f77-fcn.h"
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33 #include "lo-error.h"
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34 #include "lo-math.h"
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35 #include "quit.h"
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36
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37 typedef octave_idx_type (*dassl_fcn_ptr) (const double&, const double*,
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38 const double*, double*,
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39 octave_idx_type&, double*,
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40 octave_idx_type*);
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41
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42 typedef octave_idx_type (*dassl_jac_ptr) (const double&, const double*,
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43 const double*, double*,
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44 const double&, double*,
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45 octave_idx_type*);
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46
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47 extern "C"
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48 {
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49 F77_RET_T
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50 F77_FUNC (ddassl, DDASSL) (dassl_fcn_ptr, const octave_idx_type&,
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51 double&, double*, double*, double&,
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52 const octave_idx_type*, const double*,
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53 const double*, octave_idx_type&,
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54 double*, const octave_idx_type&,
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55 octave_idx_type*, const octave_idx_type&,
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56 const double*, const octave_idx_type*,
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57 dassl_jac_ptr);
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58 }
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59
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60 static DAEFunc::DAERHSFunc user_fun;
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61 static DAEFunc::DAEJacFunc user_jac;
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62
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63 static octave_idx_type nn;
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64
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65 static octave_idx_type
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66 ddassl_f (const double& time, const double *state, const double *deriv,
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67 double *delta, octave_idx_type& ires, double *, octave_idx_type *)
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68 {
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69 BEGIN_INTERRUPT_WITH_EXCEPTIONS;
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70
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71 // FIXME -- would be nice to avoid copying the data.
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72
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73 ColumnVector tmp_deriv (nn);
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74 ColumnVector tmp_state (nn);
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75 ColumnVector tmp_delta (nn);
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77 for (octave_idx_type i = 0; i < nn; i++)
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78 {
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79 tmp_deriv.elem (i) = deriv [i];
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80 tmp_state.elem (i) = state [i];
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81 }
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82
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83 tmp_delta = user_fun (tmp_state, tmp_deriv, time, ires);
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84
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85 if (ires >= 0)
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86 {
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87 if (tmp_delta.length () == 0)
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88 ires = -2;
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89 else
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90 {
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91 for (octave_idx_type i = 0; i < nn; i++)
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92 delta [i] = tmp_delta.elem (i);
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93 }
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94 }
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95
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96 END_INTERRUPT_WITH_EXCEPTIONS;
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97
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98 return 0;
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99 }
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100
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101 static octave_idx_type
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102 ddassl_j (const double& time, const double *state, const double *deriv,
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103 double *pd, const double& cj, double *, octave_idx_type *)
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104 {
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105 BEGIN_INTERRUPT_WITH_EXCEPTIONS;
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106
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107 // FIXME -- would be nice to avoid copying the data.
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108
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109 ColumnVector tmp_state (nn);
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110 ColumnVector tmp_deriv (nn);
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111
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112 for (octave_idx_type i = 0; i < nn; i++)
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113 {
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114 tmp_deriv.elem (i) = deriv [i];
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115 tmp_state.elem (i) = state [i];
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116 }
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117
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118 Matrix tmp_pd = user_jac (tmp_state, tmp_deriv, time, cj);
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119
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120 for (octave_idx_type j = 0; j < nn; j++)
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121 for (octave_idx_type i = 0; i < nn; i++)
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122 pd [nn * j + i] = tmp_pd.elem (i, j);
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123
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124 END_INTERRUPT_WITH_EXCEPTIONS;
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125
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126 return 0;
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127 }
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128
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129 ColumnVector
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130 DASSL::do_integrate (double tout)
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131 {
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132 ColumnVector retval;
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133
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134 if (! initialized || restart || DAEFunc::reset|| DASSL_options::reset)
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135 {
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136 integration_error = false;
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137
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138 initialized = true;
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139
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140 info.resize (dim_vector (15, 1));
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141
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142 for (octave_idx_type i = 0; i < 15; i++)
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143 info(i) = 0;
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144
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145 octave_idx_type n = size ();
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146
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147 liw = 21 + n;
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148 lrw = 40 + 9*n + n*n;
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149
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parents: 4047
diff changeset
150 nn = n;
1945
8c4bce5e773e [project @ 1996-02-14 01:03:03 by jwe]
jwe
parents: 1939
diff changeset
151
11574
a83bad07f7e3 attempt better backward compatibility for Array resize functions
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152 iwork.resize (dim_vector (liw, 1));
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153 rwork.resize (dim_vector (lrw, 1));
256
e592734b002b [project @ 1993-12-08 23:36:33 by jwe]
jwe
parents: 238
diff changeset
154
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155 info(0) = 0;
3994
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parents: 3993
diff changeset
156
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diff changeset
157 if (stop_time_set)
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158 {
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159 rwork(0) = stop_time;
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160 info(3) = 1;
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parents: 10158
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161 }
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162 else
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163 info(3) = 0;
3
9a4c07481e61 [project @ 1993-08-08 01:20:23 by jwe]
jwe
parents:
diff changeset
164
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165 restart = false;
a35a3c5d4740 [project @ 2002-08-16 08:54:31 by jwe]
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166
a35a3c5d4740 [project @ 2002-08-16 08:54:31 by jwe]
jwe
parents: 4047
diff changeset
167 // DAEFunc
3
9a4c07481e61 [project @ 1993-08-08 01:20:23 by jwe]
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parents:
diff changeset
168
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169 user_fun = DAEFunc::function ();
a35a3c5d4740 [project @ 2002-08-16 08:54:31 by jwe]
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170 user_jac = DAEFunc::jacobian_function ();
a35a3c5d4740 [project @ 2002-08-16 08:54:31 by jwe]
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171
a35a3c5d4740 [project @ 2002-08-16 08:54:31 by jwe]
jwe
parents: 4047
diff changeset
172 if (user_fun)
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173 {
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174 octave_idx_type ires = 0;
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175
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176 ColumnVector res = (*user_fun) (x, xdot, t, ires);
3993
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parents: 3991
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177
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178 if (res.length () != x.length ())
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179 {
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180 (*current_liboctave_error_handler)
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181 ("dassl: inconsistent sizes for state and residual vectors");
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parents: 3520
diff changeset
182
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183 integration_error = true;
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184 return retval;
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diff changeset
185 }
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186 }
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187 else
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188 {
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189 (*current_liboctave_error_handler)
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190 ("dassl: no user supplied RHS subroutine!");
2344
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parents: 1993
diff changeset
191
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192 integration_error = true;
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193 return retval;
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194 }
2344
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195
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196 info(4) = user_jac ? 1 : 0;
11586
12df7854fa7c strip trailing whitespace from source files
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parents: 11574
diff changeset
197
4049
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198 DAEFunc::reset = false;
3
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199
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200 // DASSL_options
3998
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diff changeset
201
4049
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diff changeset
202 double hmax = maximum_step_size ();
a35a3c5d4740 [project @ 2002-08-16 08:54:31 by jwe]
jwe
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diff changeset
203 if (hmax >= 0.0)
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diff changeset
204 {
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diff changeset
205 rwork(1) = hmax;
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206 info(6) = 1;
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diff changeset
207 }
4049
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208 else
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209 info(6) = 0;
3998
f6df65db67f9 [project @ 2002-07-24 18:10:39 by jwe]
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parents: 3997
diff changeset
210
4049
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diff changeset
211 double h0 = initial_step_size ();
a35a3c5d4740 [project @ 2002-08-16 08:54:31 by jwe]
jwe
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diff changeset
212 if (h0 >= 0.0)
10314
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diff changeset
213 {
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diff changeset
214 rwork(2) = h0;
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215 info(7) = 1;
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216 }
4049
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217 else
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218 info(7) = 0;
3998
f6df65db67f9 [project @ 2002-07-24 18:10:39 by jwe]
jwe
parents: 3997
diff changeset
219
4429
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parents: 4192
diff changeset
220 if (step_limit () >= 0)
10314
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diff changeset
221 {
07ebe522dac2 untabify liboctave C++ sources
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222 info(11) = 1;
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diff changeset
223 iwork(20) = step_limit ();
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224 }
4429
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parents: 4192
diff changeset
225 else
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226 info(11) = 0;
4429
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parents: 4192
diff changeset
227
5275
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diff changeset
228 octave_idx_type maxord = maximum_order ();
4049
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229 if (maxord >= 0)
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230 {
07ebe522dac2 untabify liboctave C++ sources
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diff changeset
231 if (maxord > 0 && maxord < 6)
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diff changeset
232 {
07ebe522dac2 untabify liboctave C++ sources
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diff changeset
233 info(8) = 1;
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diff changeset
234 iwork(2) = maxord;
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diff changeset
235 }
07ebe522dac2 untabify liboctave C++ sources
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parents: 10158
diff changeset
236 else
07ebe522dac2 untabify liboctave C++ sources
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parents: 10158
diff changeset
237 {
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238 (*current_liboctave_error_handler)
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239 ("dassl: invalid value for maximum order: %d", maxord);
10314
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diff changeset
240 integration_error = true;
07ebe522dac2 untabify liboctave C++ sources
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241 return retval;
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diff changeset
242 }
07ebe522dac2 untabify liboctave C++ sources
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diff changeset
243 }
4047
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parents: 4043
diff changeset
244
5275
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diff changeset
245 octave_idx_type enc = enforce_nonnegativity_constraints ();
4049
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246 info(9) = enc ? 1 : 0;
a35a3c5d4740 [project @ 2002-08-16 08:54:31 by jwe]
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diff changeset
247
5275
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diff changeset
248 octave_idx_type ccic = compute_consistent_initial_condition ();
4049
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diff changeset
249 info(10) = ccic ? 1 : 0;
a35a3c5d4740 [project @ 2002-08-16 08:54:31 by jwe]
jwe
parents: 4047
diff changeset
250
a35a3c5d4740 [project @ 2002-08-16 08:54:31 by jwe]
jwe
parents: 4047
diff changeset
251 abs_tol = absolute_tolerance ();
a35a3c5d4740 [project @ 2002-08-16 08:54:31 by jwe]
jwe
parents: 4047
diff changeset
252 rel_tol = relative_tolerance ();
289
c23f50e61c58 [project @ 1994-01-13 06:25:58 by jwe]
jwe
parents: 256
diff changeset
253
5275
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe]
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parents: 5105
diff changeset
254 octave_idx_type abs_tol_len = abs_tol.length ();
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe]
jwe
parents: 5105
diff changeset
255 octave_idx_type rel_tol_len = rel_tol.length ();
4049
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diff changeset
256
a35a3c5d4740 [project @ 2002-08-16 08:54:31 by jwe]
jwe
parents: 4047
diff changeset
257 if (abs_tol_len == 1 && rel_tol_len == 1)
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diff changeset
258 {
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diff changeset
259 info(1) = 0;
07ebe522dac2 untabify liboctave C++ sources
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diff changeset
260 }
4049
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jwe
parents: 4047
diff changeset
261 else if (abs_tol_len == n && rel_tol_len == n)
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diff changeset
262 {
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diff changeset
263 info(1) = 1;
07ebe522dac2 untabify liboctave C++ sources
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parents: 10158
diff changeset
264 }
4047
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parents: 4043
diff changeset
265 else
10314
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diff changeset
266 {
07ebe522dac2 untabify liboctave C++ sources
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diff changeset
267 (*current_liboctave_error_handler)
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268 ("dassl: inconsistent sizes for tolerance arrays");
4049
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parents: 4047
diff changeset
269
10314
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diff changeset
270 integration_error = true;
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diff changeset
271 return retval;
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diff changeset
272 }
4049
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diff changeset
273
a35a3c5d4740 [project @ 2002-08-16 08:54:31 by jwe]
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parents: 4047
diff changeset
274 DASSL_options::reset = false;
289
c23f50e61c58 [project @ 1994-01-13 06:25:58 by jwe]
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parents: 256
diff changeset
275 }
4047
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diff changeset
276
11502
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diff changeset
277 double *px = x.fortran_vec ();
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diff changeset
278 double *pxdot = xdot.fortran_vec ();
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279
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diff changeset
280 octave_idx_type *pinfo = info.fortran_vec ();
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281
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diff changeset
282 double *prel_tol = rel_tol.fortran_vec ();
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diff changeset
283 double *pabs_tol = abs_tol.fortran_vec ();
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diff changeset
284
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diff changeset
285 double *prwork = rwork.fortran_vec ();
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diff changeset
286 octave_idx_type *piwork = iwork.fortran_vec ();
4638800cd660 delete data pointer members from liboctave ODE/DAE classes; make destuctors virtual in ODE/DAE base classes
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287
4638800cd660 delete data pointer members from liboctave ODE/DAE classes; make destuctors virtual in ODE/DAE base classes
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diff changeset
288 double *dummy = 0;
4638800cd660 delete data pointer members from liboctave ODE/DAE classes; make destuctors virtual in ODE/DAE base classes
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diff changeset
289 octave_idx_type *idummy = 0;
3
9a4c07481e61 [project @ 1993-08-08 01:20:23 by jwe]
jwe
parents:
diff changeset
290
4049
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parents: 4047
diff changeset
291 F77_XFCN (ddassl, DDASSL, (ddassl_f, nn, t, px, pxdot, tout, pinfo,
10314
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diff changeset
292 prel_tol, pabs_tol, istate, prwork, lrw,
07ebe522dac2 untabify liboctave C++ sources
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diff changeset
293 piwork, liw, dummy, idummy, ddassl_j));
3
9a4c07481e61 [project @ 1993-08-08 01:20:23 by jwe]
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294
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diff changeset
295 switch (istate)
3
9a4c07481e61 [project @ 1993-08-08 01:20:23 by jwe]
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296 {
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297 case 1: // A step was successfully taken in intermediate-output
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298 // mode. The code has not yet reached TOUT.
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diff changeset
299 case 2: // The integration to TSTOP was successfully completed
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300 // (T=TSTOP) by stepping exactly to TSTOP.
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diff changeset
301 case 3: // The integration to TOUT was successfully completed
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diff changeset
302 // (T=TOUT) by stepping past TOUT. Y(*) is obtained by
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303 // interpolation. YPRIME(*) is obtained by interpolation.
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304 retval = x;
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diff changeset
305 t = tout;
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diff changeset
306 break;
1360
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diff changeset
307
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diff changeset
308 case -1: // A large amount of work has been expended. (~500 steps).
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diff changeset
309 case -2: // The error tolerances are too stringent.
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310 case -3: // The local error test cannot be satisfied because you
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311 // specified a zero component in ATOL and the
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diff changeset
312 // corresponding computed solution component is zero.
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313 // Thus, a pure relative error test is impossible for
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314 // this component.
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315 case -6: // DDASSL had repeated error test failures on the last
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316 // attempted step.
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317 case -7: // The corrector could not converge.
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318 case -8: // The matrix of partial derivatives is singular.
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319 case -9: // The corrector could not converge. There were repeated
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320 // error test failures in this step.
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321 case -10: // The corrector could not converge because IRES was
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322 // equal to minus one.
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323 case -11: // IRES equal to -2 was encountered and control is being
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324 // returned to the calling program.
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325 case -12: // DDASSL failed to compute the initial YPRIME.
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326 case -33: // The code has encountered trouble from which it cannot
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327 // recover. A message is printed explaining the trouble
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328 // and control is returned to the calling program. For
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329 // example, this occurs when invalid input is detected.
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330 integration_error = true;
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331 break;
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332
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333 default:
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334 integration_error = true;
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335 (*current_liboctave_error_handler)
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336 ("unrecognized value of istate (= %d) returned from ddassl",
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337 istate);
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338 break;
3
9a4c07481e61 [project @ 1993-08-08 01:20:23 by jwe]
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339 }
9a4c07481e61 [project @ 1993-08-08 01:20:23 by jwe]
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340
1945
8c4bce5e773e [project @ 1996-02-14 01:03:03 by jwe]
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diff changeset
341 return retval;
3
9a4c07481e61 [project @ 1993-08-08 01:20:23 by jwe]
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342 }
9a4c07481e61 [project @ 1993-08-08 01:20:23 by jwe]
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343
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344 Matrix
1842
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345 DASSL::do_integrate (const ColumnVector& tout)
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346 {
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347 Matrix dummy;
0574a1f3a273 [project @ 1996-02-03 11:44:02 by jwe]
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348 return integrate (tout, dummy);
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349 }
0574a1f3a273 [project @ 1996-02-03 11:44:02 by jwe]
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diff changeset
350
0574a1f3a273 [project @ 1996-02-03 11:44:02 by jwe]
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diff changeset
351 Matrix
0574a1f3a273 [project @ 1996-02-03 11:44:02 by jwe]
jwe
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352 DASSL::integrate (const ColumnVector& tout, Matrix& xdot_out)
3
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353 {
9a4c07481e61 [project @ 1993-08-08 01:20:23 by jwe]
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354 Matrix retval;
4049
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355
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356 octave_idx_type n_out = tout.capacity ();
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357 octave_idx_type n = size ();
3
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358
9a4c07481e61 [project @ 1993-08-08 01:20:23 by jwe]
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diff changeset
359 if (n_out > 0 && n > 0)
9a4c07481e61 [project @ 1993-08-08 01:20:23 by jwe]
jwe
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360 {
9a4c07481e61 [project @ 1993-08-08 01:20:23 by jwe]
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361 retval.resize (n_out, n);
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362 xdot_out.resize (n_out, n);
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363
5275
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364 for (octave_idx_type i = 0; i < n; i++)
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diff changeset
365 {
07ebe522dac2 untabify liboctave C++ sources
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366 retval.elem (0, i) = x.elem (i);
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367 xdot_out.elem (0, i) = xdot.elem (i);
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368 }
3
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369
5275
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370 for (octave_idx_type j = 1; j < n_out; j++)
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diff changeset
371 {
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372 ColumnVector x_next = do_integrate (tout.elem (j));
256
e592734b002b [project @ 1993-12-08 23:36:33 by jwe]
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parents: 238
diff changeset
373
10314
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374 if (integration_error)
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diff changeset
375 return retval;
256
e592734b002b [project @ 1993-12-08 23:36:33 by jwe]
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parents: 238
diff changeset
376
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377 for (octave_idx_type i = 0; i < n; i++)
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diff changeset
378 {
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diff changeset
379 retval.elem (j, i) = x_next.elem (i);
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diff changeset
380 xdot_out.elem (j, i) = xdot.elem (i);
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381 }
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382 }
3
9a4c07481e61 [project @ 1993-08-08 01:20:23 by jwe]
jwe
parents:
diff changeset
383 }
9a4c07481e61 [project @ 1993-08-08 01:20:23 by jwe]
jwe
parents:
diff changeset
384
9a4c07481e61 [project @ 1993-08-08 01:20:23 by jwe]
jwe
parents:
diff changeset
385 return retval;
9a4c07481e61 [project @ 1993-08-08 01:20:23 by jwe]
jwe
parents:
diff changeset
386 }
9a4c07481e61 [project @ 1993-08-08 01:20:23 by jwe]
jwe
parents:
diff changeset
387
9a4c07481e61 [project @ 1993-08-08 01:20:23 by jwe]
jwe
parents:
diff changeset
388 Matrix
3519
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jwe
parents: 3507
diff changeset
389 DASSL::do_integrate (const ColumnVector& tout, const ColumnVector& tcrit)
957d7d6ab0e0 [project @ 2000-02-02 06:00:09 by jwe]
jwe
parents: 3507
diff changeset
390 {
957d7d6ab0e0 [project @ 2000-02-02 06:00:09 by jwe]
jwe
parents: 3507
diff changeset
391 Matrix dummy;
957d7d6ab0e0 [project @ 2000-02-02 06:00:09 by jwe]
jwe
parents: 3507
diff changeset
392 return integrate (tout, dummy, tcrit);
957d7d6ab0e0 [project @ 2000-02-02 06:00:09 by jwe]
jwe
parents: 3507
diff changeset
393 }
957d7d6ab0e0 [project @ 2000-02-02 06:00:09 by jwe]
jwe
parents: 3507
diff changeset
394
957d7d6ab0e0 [project @ 2000-02-02 06:00:09 by jwe]
jwe
parents: 3507
diff changeset
395 Matrix
1842
0574a1f3a273 [project @ 1996-02-03 11:44:02 by jwe]
jwe
parents: 1546
diff changeset
396 DASSL::integrate (const ColumnVector& tout, Matrix& xdot_out,
11586
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diff changeset
397 const ColumnVector& tcrit)
3
9a4c07481e61 [project @ 1993-08-08 01:20:23 by jwe]
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diff changeset
398 {
9a4c07481e61 [project @ 1993-08-08 01:20:23 by jwe]
jwe
parents:
diff changeset
399 Matrix retval;
4049
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parents: 4047
diff changeset
400
5275
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diff changeset
401 octave_idx_type n_out = tout.capacity ();
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe]
jwe
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diff changeset
402 octave_idx_type n = size ();
3
9a4c07481e61 [project @ 1993-08-08 01:20:23 by jwe]
jwe
parents:
diff changeset
403
9a4c07481e61 [project @ 1993-08-08 01:20:23 by jwe]
jwe
parents:
diff changeset
404 if (n_out > 0 && n > 0)
9a4c07481e61 [project @ 1993-08-08 01:20:23 by jwe]
jwe
parents:
diff changeset
405 {
9a4c07481e61 [project @ 1993-08-08 01:20:23 by jwe]
jwe
parents:
diff changeset
406 retval.resize (n_out, n);
9a4c07481e61 [project @ 1993-08-08 01:20:23 by jwe]
jwe
parents:
diff changeset
407 xdot_out.resize (n_out, n);
9a4c07481e61 [project @ 1993-08-08 01:20:23 by jwe]
jwe
parents:
diff changeset
408
5275
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diff changeset
409 for (octave_idx_type i = 0; i < n; i++)
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diff changeset
410 {
07ebe522dac2 untabify liboctave C++ sources
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diff changeset
411 retval.elem (0, i) = x.elem (i);
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diff changeset
412 xdot_out.elem (0, i) = xdot.elem (i);
07ebe522dac2 untabify liboctave C++ sources
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diff changeset
413 }
3
9a4c07481e61 [project @ 1993-08-08 01:20:23 by jwe]
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parents:
diff changeset
414
5275
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diff changeset
415 octave_idx_type n_crit = tcrit.capacity ();
3
9a4c07481e61 [project @ 1993-08-08 01:20:23 by jwe]
jwe
parents:
diff changeset
416
9a4c07481e61 [project @ 1993-08-08 01:20:23 by jwe]
jwe
parents:
diff changeset
417 if (n_crit > 0)
10314
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diff changeset
418 {
07ebe522dac2 untabify liboctave C++ sources
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diff changeset
419 octave_idx_type i_crit = 0;
07ebe522dac2 untabify liboctave C++ sources
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diff changeset
420 octave_idx_type i_out = 1;
07ebe522dac2 untabify liboctave C++ sources
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diff changeset
421 double next_crit = tcrit.elem (0);
07ebe522dac2 untabify liboctave C++ sources
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diff changeset
422 double next_out;
07ebe522dac2 untabify liboctave C++ sources
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diff changeset
423 while (i_out < n_out)
07ebe522dac2 untabify liboctave C++ sources
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diff changeset
424 {
07ebe522dac2 untabify liboctave C++ sources
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diff changeset
425 bool do_restart = false;
3
9a4c07481e61 [project @ 1993-08-08 01:20:23 by jwe]
jwe
parents:
diff changeset
426
10314
07ebe522dac2 untabify liboctave C++ sources
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diff changeset
427 next_out = tout.elem (i_out);
07ebe522dac2 untabify liboctave C++ sources
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diff changeset
428 if (i_crit < n_crit)
07ebe522dac2 untabify liboctave C++ sources
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diff changeset
429 next_crit = tcrit.elem (i_crit);
3
9a4c07481e61 [project @ 1993-08-08 01:20:23 by jwe]
jwe
parents:
diff changeset
430
10314
07ebe522dac2 untabify liboctave C++ sources
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diff changeset
431 bool save_output;
07ebe522dac2 untabify liboctave C++ sources
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diff changeset
432 double t_out;
3
9a4c07481e61 [project @ 1993-08-08 01:20:23 by jwe]
jwe
parents:
diff changeset
433
10314
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diff changeset
434 if (next_crit == next_out)
07ebe522dac2 untabify liboctave C++ sources
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diff changeset
435 {
07ebe522dac2 untabify liboctave C++ sources
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diff changeset
436 set_stop_time (next_crit);
07ebe522dac2 untabify liboctave C++ sources
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diff changeset
437 t_out = next_out;
07ebe522dac2 untabify liboctave C++ sources
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diff changeset
438 save_output = true;
07ebe522dac2 untabify liboctave C++ sources
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parents: 10158
diff changeset
439 i_out++;
07ebe522dac2 untabify liboctave C++ sources
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diff changeset
440 i_crit++;
07ebe522dac2 untabify liboctave C++ sources
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parents: 10158
diff changeset
441 do_restart = true;
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
442 }
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
443 else if (next_crit < next_out)
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
444 {
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
445 if (i_crit < n_crit)
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
446 {
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
447 set_stop_time (next_crit);
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
448 t_out = next_crit;
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
449 save_output = false;
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
450 i_crit++;
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
451 do_restart = true;
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
452 }
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
453 else
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
454 {
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
455 clear_stop_time ();
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
456 t_out = next_out;
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
457 save_output = true;
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
458 i_out++;
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
459 }
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
460 }
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
461 else
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
462 {
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
463 set_stop_time (next_crit);
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
464 t_out = next_out;
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
465 save_output = true;
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
466 i_out++;
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
467 }
3
9a4c07481e61 [project @ 1993-08-08 01:20:23 by jwe]
jwe
parents:
diff changeset
468
10314
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
469 ColumnVector x_next = do_integrate (t_out);
3
9a4c07481e61 [project @ 1993-08-08 01:20:23 by jwe]
jwe
parents:
diff changeset
470
10314
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
471 if (integration_error)
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
472 return retval;
256
e592734b002b [project @ 1993-12-08 23:36:33 by jwe]
jwe
parents: 238
diff changeset
473
10314
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
474 if (save_output)
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
475 {
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
476 for (octave_idx_type i = 0; i < n; i++)
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
477 {
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
478 retval.elem (i_out-1, i) = x_next.elem (i);
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
479 xdot_out.elem (i_out-1, i) = xdot.elem (i);
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
480 }
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
481 }
3
9a4c07481e61 [project @ 1993-08-08 01:20:23 by jwe]
jwe
parents:
diff changeset
482
10314
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
483 if (do_restart)
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
484 force_restart ();
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
485 }
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
486 }
3
9a4c07481e61 [project @ 1993-08-08 01:20:23 by jwe]
jwe
parents:
diff changeset
487 else
10314
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
488 {
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
489 retval = integrate (tout, xdot_out);
256
e592734b002b [project @ 1993-12-08 23:36:33 by jwe]
jwe
parents: 238
diff changeset
490
10314
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
491 if (integration_error)
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
492 return retval;
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
493 }
3
9a4c07481e61 [project @ 1993-08-08 01:20:23 by jwe]
jwe
parents:
diff changeset
494 }
9a4c07481e61 [project @ 1993-08-08 01:20:23 by jwe]
jwe
parents:
diff changeset
495
9a4c07481e61 [project @ 1993-08-08 01:20:23 by jwe]
jwe
parents:
diff changeset
496 return retval;
9a4c07481e61 [project @ 1993-08-08 01:20:23 by jwe]
jwe
parents:
diff changeset
497 }
289
c23f50e61c58 [project @ 1994-01-13 06:25:58 by jwe]
jwe
parents: 256
diff changeset
498
3995
ee0304212be0 [project @ 2002-07-17 04:32:42 by jwe]
jwe
parents: 3994
diff changeset
499 std::string
ee0304212be0 [project @ 2002-07-17 04:32:42 by jwe]
jwe
parents: 3994
diff changeset
500 DASSL::error_message (void) const
ee0304212be0 [project @ 2002-07-17 04:32:42 by jwe]
jwe
parents: 3994
diff changeset
501 {
ee0304212be0 [project @ 2002-07-17 04:32:42 by jwe]
jwe
parents: 3994
diff changeset
502 std::string retval;
ee0304212be0 [project @ 2002-07-17 04:32:42 by jwe]
jwe
parents: 3994
diff changeset
503
5765
7ba9ad1fec11 [project @ 2006-04-17 05:05:15 by jwe]
jwe
parents: 5307
diff changeset
504 std::ostringstream buf;
7ba9ad1fec11 [project @ 2006-04-17 05:05:15 by jwe]
jwe
parents: 5307
diff changeset
505 buf << t;
7ba9ad1fec11 [project @ 2006-04-17 05:05:15 by jwe]
jwe
parents: 5307
diff changeset
506 std::string t_curr = buf.str ();
4043
6fae69a1796e [project @ 2002-08-15 03:36:27 by jwe]
jwe
parents: 3998
diff changeset
507
3997
d4091aff6468 [project @ 2002-07-17 18:00:06 by jwe]
jwe
parents: 3996
diff changeset
508 switch (istate)
3995
ee0304212be0 [project @ 2002-07-17 04:32:42 by jwe]
jwe
parents: 3994
diff changeset
509 {
3996
98107d72871c [project @ 2002-07-17 16:22:05 by jwe]
jwe
parents: 3995
diff changeset
510 case 1:
98107d72871c [project @ 2002-07-17 16:22:05 by jwe]
jwe
parents: 3995
diff changeset
511 retval = "a step was successfully taken in intermediate-output mode.";
98107d72871c [project @ 2002-07-17 16:22:05 by jwe]
jwe
parents: 3995
diff changeset
512 break;
98107d72871c [project @ 2002-07-17 16:22:05 by jwe]
jwe
parents: 3995
diff changeset
513
98107d72871c [project @ 2002-07-17 16:22:05 by jwe]
jwe
parents: 3995
diff changeset
514 case 2:
98107d72871c [project @ 2002-07-17 16:22:05 by jwe]
jwe
parents: 3995
diff changeset
515 retval = "integration completed by stepping exactly to TOUT";
98107d72871c [project @ 2002-07-17 16:22:05 by jwe]
jwe
parents: 3995
diff changeset
516 break;
98107d72871c [project @ 2002-07-17 16:22:05 by jwe]
jwe
parents: 3995
diff changeset
517
98107d72871c [project @ 2002-07-17 16:22:05 by jwe]
jwe
parents: 3995
diff changeset
518 case 3:
98107d72871c [project @ 2002-07-17 16:22:05 by jwe]
jwe
parents: 3995
diff changeset
519 retval = "integration to tout completed by stepping past TOUT";
98107d72871c [project @ 2002-07-17 16:22:05 by jwe]
jwe
parents: 3995
diff changeset
520 break;
98107d72871c [project @ 2002-07-17 16:22:05 by jwe]
jwe
parents: 3995
diff changeset
521
98107d72871c [project @ 2002-07-17 16:22:05 by jwe]
jwe
parents: 3995
diff changeset
522 case -1:
4043
6fae69a1796e [project @ 2002-08-15 03:36:27 by jwe]
jwe
parents: 3998
diff changeset
523 retval = std::string ("a large amount of work has been expended (t =")
10314
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
524 + t_curr + ")";
3996
98107d72871c [project @ 2002-07-17 16:22:05 by jwe]
jwe
parents: 3995
diff changeset
525 break;
98107d72871c [project @ 2002-07-17 16:22:05 by jwe]
jwe
parents: 3995
diff changeset
526
98107d72871c [project @ 2002-07-17 16:22:05 by jwe]
jwe
parents: 3995
diff changeset
527 case -2:
98107d72871c [project @ 2002-07-17 16:22:05 by jwe]
jwe
parents: 3995
diff changeset
528 retval = "the error tolerances are too stringent";
98107d72871c [project @ 2002-07-17 16:22:05 by jwe]
jwe
parents: 3995
diff changeset
529 break;
98107d72871c [project @ 2002-07-17 16:22:05 by jwe]
jwe
parents: 3995
diff changeset
530
98107d72871c [project @ 2002-07-17 16:22:05 by jwe]
jwe
parents: 3995
diff changeset
531 case -3:
4043
6fae69a1796e [project @ 2002-08-15 03:36:27 by jwe]
jwe
parents: 3998
diff changeset
532 retval = std::string ("error weight became zero during problem. (t = ")
10314
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
533 + t_curr
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
534 + "; solution component i vanished, and atol or atol(i) == 0)";
3996
98107d72871c [project @ 2002-07-17 16:22:05 by jwe]
jwe
parents: 3995
diff changeset
535 break;
98107d72871c [project @ 2002-07-17 16:22:05 by jwe]
jwe
parents: 3995
diff changeset
536
98107d72871c [project @ 2002-07-17 16:22:05 by jwe]
jwe
parents: 3995
diff changeset
537 case -6:
4043
6fae69a1796e [project @ 2002-08-15 03:36:27 by jwe]
jwe
parents: 3998
diff changeset
538 retval = std::string ("repeated error test failures on the last attempted step (t = ")
10314
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
539 + t_curr + ")";
3996
98107d72871c [project @ 2002-07-17 16:22:05 by jwe]
jwe
parents: 3995
diff changeset
540 break;
98107d72871c [project @ 2002-07-17 16:22:05 by jwe]
jwe
parents: 3995
diff changeset
541
98107d72871c [project @ 2002-07-17 16:22:05 by jwe]
jwe
parents: 3995
diff changeset
542 case -7:
4043
6fae69a1796e [project @ 2002-08-15 03:36:27 by jwe]
jwe
parents: 3998
diff changeset
543 retval = std::string ("the corrector could not converge (t = ")
10314
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
544 + t_curr + ")";
3996
98107d72871c [project @ 2002-07-17 16:22:05 by jwe]
jwe
parents: 3995
diff changeset
545 break;
98107d72871c [project @ 2002-07-17 16:22:05 by jwe]
jwe
parents: 3995
diff changeset
546
98107d72871c [project @ 2002-07-17 16:22:05 by jwe]
jwe
parents: 3995
diff changeset
547 case -8:
4043
6fae69a1796e [project @ 2002-08-15 03:36:27 by jwe]
jwe
parents: 3998
diff changeset
548 retval = std::string ("the matrix of partial derivatives is singular (t = ")
10314
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
549 + t_curr + ")";
3996
98107d72871c [project @ 2002-07-17 16:22:05 by jwe]
jwe
parents: 3995
diff changeset
550 break;
98107d72871c [project @ 2002-07-17 16:22:05 by jwe]
jwe
parents: 3995
diff changeset
551
98107d72871c [project @ 2002-07-17 16:22:05 by jwe]
jwe
parents: 3995
diff changeset
552 case -9:
4043
6fae69a1796e [project @ 2002-08-15 03:36:27 by jwe]
jwe
parents: 3998
diff changeset
553 retval = std::string ("the corrector could not converge (t = ")
10314
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
554 + t_curr + "; repeated test failures)";
3996
98107d72871c [project @ 2002-07-17 16:22:05 by jwe]
jwe
parents: 3995
diff changeset
555 break;
98107d72871c [project @ 2002-07-17 16:22:05 by jwe]
jwe
parents: 3995
diff changeset
556
98107d72871c [project @ 2002-07-17 16:22:05 by jwe]
jwe
parents: 3995
diff changeset
557 case -10:
4043
6fae69a1796e [project @ 2002-08-15 03:36:27 by jwe]
jwe
parents: 3998
diff changeset
558 retval = std::string ("corrector could not converge because IRES was -1 (t = ")
10314
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
559 + t_curr + ")";
3996
98107d72871c [project @ 2002-07-17 16:22:05 by jwe]
jwe
parents: 3995
diff changeset
560 break;
98107d72871c [project @ 2002-07-17 16:22:05 by jwe]
jwe
parents: 3995
diff changeset
561
98107d72871c [project @ 2002-07-17 16:22:05 by jwe]
jwe
parents: 3995
diff changeset
562 case -11:
4043
6fae69a1796e [project @ 2002-08-15 03:36:27 by jwe]
jwe
parents: 3998
diff changeset
563 retval = std::string ("return requested in user-supplied function (t = ")
10314
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
564 + t_curr + ")";
3996
98107d72871c [project @ 2002-07-17 16:22:05 by jwe]
jwe
parents: 3995
diff changeset
565 break;
98107d72871c [project @ 2002-07-17 16:22:05 by jwe]
jwe
parents: 3995
diff changeset
566
98107d72871c [project @ 2002-07-17 16:22:05 by jwe]
jwe
parents: 3995
diff changeset
567 case -12:
98107d72871c [project @ 2002-07-17 16:22:05 by jwe]
jwe
parents: 3995
diff changeset
568 retval = "failed to compute consistent initial conditions";
98107d72871c [project @ 2002-07-17 16:22:05 by jwe]
jwe
parents: 3995
diff changeset
569 break;
98107d72871c [project @ 2002-07-17 16:22:05 by jwe]
jwe
parents: 3995
diff changeset
570
98107d72871c [project @ 2002-07-17 16:22:05 by jwe]
jwe
parents: 3995
diff changeset
571 case -33:
98107d72871c [project @ 2002-07-17 16:22:05 by jwe]
jwe
parents: 3995
diff changeset
572 retval = "unrecoverable error (see printed message)";
98107d72871c [project @ 2002-07-17 16:22:05 by jwe]
jwe
parents: 3995
diff changeset
573 break;
98107d72871c [project @ 2002-07-17 16:22:05 by jwe]
jwe
parents: 3995
diff changeset
574
3995
ee0304212be0 [project @ 2002-07-17 04:32:42 by jwe]
jwe
parents: 3994
diff changeset
575 default:
ee0304212be0 [project @ 2002-07-17 04:32:42 by jwe]
jwe
parents: 3994
diff changeset
576 retval = "unknown error state";
ee0304212be0 [project @ 2002-07-17 04:32:42 by jwe]
jwe
parents: 3994
diff changeset
577 break;
ee0304212be0 [project @ 2002-07-17 04:32:42 by jwe]
jwe
parents: 3994
diff changeset
578 }
ee0304212be0 [project @ 2002-07-17 04:32:42 by jwe]
jwe
parents: 3994
diff changeset
579
ee0304212be0 [project @ 2002-07-17 04:32:42 by jwe]
jwe
parents: 3994
diff changeset
580 return retval;
ee0304212be0 [project @ 2002-07-17 04:32:42 by jwe]
jwe
parents: 3994
diff changeset
581 }