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1 /* |
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2 |
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3 Copyright (C) 1996, 1997, 2002 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 2, or (at your option) any |
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10 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, write to the Free |
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19 Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
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20 |
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21 */ |
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22 |
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23 #if defined (__GNUG__) && defined (USE_PRAGMA_INTERFACE_IMPLEMENTATION) |
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24 #pragma implementation |
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25 #endif |
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26 |
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27 #ifdef HAVE_CONFIG_H |
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28 #include <config.h> |
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29 #endif |
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30 |
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31 #include <cfloat> |
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32 #include <cmath> |
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33 |
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34 #include "DASPK.h" |
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35 #include "f77-fcn.h" |
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36 #include "lo-error.h" |
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37 #include "lo-sstream.h" |
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38 #include "quit.h" |
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39 |
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40 typedef int (*daspk_fcn_ptr) (const double&, const double*, |
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41 const double*, const double&, |
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42 double*, int&, double*, int*); |
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43 |
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44 typedef int (*daspk_jac_ptr) (const double&, const double*, |
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45 const double*, double*, |
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46 const double&, double*, int*); |
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47 |
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48 typedef int (*daspk_psol_ptr) (const int&, const double&, |
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49 const double*, const double*, |
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50 const double*, const double&, |
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51 const double*, double*, int*, |
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52 double*, const double&, int&, |
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53 double*, int*); |
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54 |
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55 extern "C" |
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56 { |
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57 F77_RET_T |
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58 F77_FUNC (ddaspk, DDASPK) (daspk_fcn_ptr, const int&, double&, |
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59 double*, double*, double&, const int*, |
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60 const double*, const double*, int&, |
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61 double*, const int&, int*, const int&, |
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62 const double*, const int*, |
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63 daspk_jac_ptr, daspk_psol_ptr); |
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64 } |
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65 |
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66 static DAEFunc::DAERHSFunc user_fun; |
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67 static DAEFunc::DAEJacFunc user_jac; |
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68 static int nn; |
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69 |
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70 static int |
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71 ddaspk_f (const double& time, const double *state, const double *deriv, |
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72 const double&, double *delta, int& ires, double *, int *) |
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73 { |
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74 BEGIN_INTERRUPT_WITH_EXCEPTIONS; |
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75 |
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76 ColumnVector tmp_deriv (nn); |
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77 ColumnVector tmp_state (nn); |
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78 ColumnVector tmp_delta (nn); |
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79 |
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80 for (int i = 0; i < nn; i++) |
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81 { |
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82 tmp_deriv.elem (i) = deriv [i]; |
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83 tmp_state.elem (i) = state [i]; |
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84 } |
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85 |
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86 tmp_delta = user_fun (tmp_state, tmp_deriv, time, ires); |
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87 |
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88 if (ires >= 0) |
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89 { |
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90 if (tmp_delta.length () == 0) |
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91 ires = -2; |
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92 else |
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93 { |
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94 for (int i = 0; i < nn; i++) |
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95 delta [i] = tmp_delta.elem (i); |
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96 } |
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97 } |
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98 |
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99 END_INTERRUPT_WITH_EXCEPTIONS; |
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100 |
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101 return 0; |
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102 } |
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103 |
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104 //NEQ, T, Y, YPRIME, SAVR, WK, CJ, WGHT, |
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105 //C WP, IWP, B, EPLIN, IER, RPAR, IPAR) |
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106 |
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107 static int |
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108 ddaspk_psol (const int& neq, const double& time, const double *state, |
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109 const double *deriv, const double *savr, |
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110 const double& cj, const double *wght, double *wp, |
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111 int *iwp, double *b, const double& eplin, int& ier, |
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112 double *, int*) |
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113 { |
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114 BEGIN_INTERRUPT_WITH_EXCEPTIONS; |
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115 |
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116 abort (); |
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117 |
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118 END_INTERRUPT_WITH_EXCEPTIONS; |
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119 |
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120 return 0; |
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121 } |
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122 |
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123 |
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124 static int |
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125 ddaspk_j (const double& time, const double *state, const double *deriv, |
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126 double *pd, const double& cj, double *, int *) |
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127 { |
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128 BEGIN_INTERRUPT_WITH_EXCEPTIONS; |
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129 |
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130 // XXX FIXME XXX -- would be nice to avoid copying the data. |
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131 |
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132 ColumnVector tmp_state (nn); |
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133 ColumnVector tmp_deriv (nn); |
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134 |
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135 for (int i = 0; i < nn; i++) |
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136 { |
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137 tmp_deriv.elem (i) = deriv [i]; |
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138 tmp_state.elem (i) = state [i]; |
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139 } |
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140 |
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141 Matrix tmp_pd = user_jac (tmp_state, tmp_deriv, time, cj); |
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142 |
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143 for (int j = 0; j < nn; j++) |
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144 for (int i = 0; i < nn; i++) |
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145 pd [nn * j + i] = tmp_pd.elem (i, j); |
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146 |
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147 END_INTERRUPT_WITH_EXCEPTIONS; |
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148 |
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149 return 0; |
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150 } |
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151 |
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152 ColumnVector |
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153 DASPK::do_integrate (double tout) |
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154 { |
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155 // XXX FIXME XXX -- should handle all this option stuff just once |
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156 // for each new problem. |
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157 |
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158 ColumnVector retval; |
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159 |
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160 if (! initialized || restart || DAEFunc::reset|| DASPK_options::reset) |
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161 { |
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162 integration_error = false; |
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163 |
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164 initialized = true; |
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165 |
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166 info.resize (20); |
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167 |
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168 for (int i = 0; i < 20; i++) |
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169 info(i) = 0; |
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170 |
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171 pinfo = info.fortran_vec (); |
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172 |
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173 int n = size (); |
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174 |
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175 nn = n; |
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176 |
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177 info(0) = 0; |
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178 |
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179 if (stop_time_set) |
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180 { |
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181 rwork(0) = stop_time; |
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182 info(3) = 1; |
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183 } |
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184 else |
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185 info(3) = 0; |
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186 |
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187 px = x.fortran_vec (); |
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188 pxdot = xdot.fortran_vec (); |
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189 |
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190 // DAEFunc |
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191 |
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192 user_fun = DAEFunc::function (); |
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193 user_jac = DAEFunc::jacobian_function (); |
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194 |
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195 if (user_fun) |
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196 { |
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197 int ires = 0; |
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198 |
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199 ColumnVector res = (*user_fun) (x, xdot, t, ires); |
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200 |
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201 if (res.length () != x.length ()) |
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202 { |
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203 (*current_liboctave_error_handler) |
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204 ("daspk: inconsistent sizes for state and residual vectors"); |
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205 |
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206 integration_error = true; |
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207 return retval; |
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208 } |
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209 } |
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210 else |
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211 { |
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212 (*current_liboctave_error_handler) |
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213 ("daspk: no user supplied RHS subroutine!"); |
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214 |
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215 integration_error = true; |
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216 return retval; |
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217 } |
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218 |
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219 info(4) = user_jac ? 1 : 0; |
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220 |
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221 DAEFunc::reset = false; |
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222 |
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223 int eiq = enforce_inequality_constraints (); |
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224 int ccic = compute_consistent_initial_condition (); |
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225 int eavfet = exclude_algebraic_variables_from_error_test (); |
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226 |
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227 liw = 40 + n; |
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228 if (eiq == 1 || eiq == 3) |
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229 liw += n; |
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230 if (ccic == 1 || eavfet == 1) |
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231 liw += n; |
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232 |
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233 lrw = 50 + 9*n; |
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234 if (! user_jac) |
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235 lrw += n*n; |
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236 if (eavfet == 1) |
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237 lrw += n; |
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238 |
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239 iwork.resize (liw); |
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240 rwork.resize (lrw); |
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241 |
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242 piwork = iwork.fortran_vec (); |
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243 prwork = rwork.fortran_vec (); |
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244 |
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245 // DASPK_options |
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246 |
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247 abs_tol = absolute_tolerance (); |
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248 rel_tol = relative_tolerance (); |
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249 |
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250 int abs_tol_len = abs_tol.length (); |
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251 int rel_tol_len = rel_tol.length (); |
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252 |
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253 if (abs_tol_len == 1 && rel_tol_len == 1) |
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254 { |
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255 info(1) = 0; |
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256 } |
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257 else if (abs_tol_len == n && rel_tol_len == n) |
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258 { |
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259 info(1) = 1; |
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260 } |
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261 else |
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262 { |
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263 (*current_liboctave_error_handler) |
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264 ("daspk: inconsistent sizes for tolerance arrays"); |
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265 |
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266 integration_error = true; |
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267 return retval; |
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268 } |
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269 |
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270 pabs_tol = abs_tol.fortran_vec (); |
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271 prel_tol = rel_tol.fortran_vec (); |
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272 |
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273 double hmax = maximum_step_size (); |
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274 if (hmax >= 0.0) |
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275 { |
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276 rwork(1) = hmax; |
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277 info(6) = 1; |
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278 } |
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279 else |
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280 info(6) = 0; |
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281 |
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282 double h0 = initial_step_size (); |
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283 if (h0 >= 0.0) |
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284 { |
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285 rwork(2) = h0; |
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286 info(7) = 1; |
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287 } |
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288 else |
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289 info(7) = 0; |
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290 |
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291 int maxord = maximum_order (); |
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292 if (maxord >= 0) |
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293 { |
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294 if (maxord > 0 && maxord < 6) |
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295 { |
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296 info(8) = 1; |
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297 iwork(2) = maxord; |
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298 } |
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299 else |
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300 { |
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301 (*current_liboctave_error_handler) |
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302 ("daspk: invalid value for maximum order"); |
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303 integration_error = true; |
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304 return retval; |
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305 } |
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306 } |
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307 |
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308 switch (eiq) |
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309 { |
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310 case 1: |
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311 case 3: |
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312 { |
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313 Array<int> ict = inequality_constraint_types (); |
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314 |
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315 if (ict.length () == n) |
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316 { |
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317 for (int i = 0; i < n; i++) |
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318 { |
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319 int val = ict(i); |
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320 if (val < -2 || val > 2) |
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321 { |
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322 (*current_liboctave_error_handler) |
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323 ("daspk: invalid value for inequality constraint type"); |
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324 integration_error = true; |
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325 return retval; |
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326 } |
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327 iwork(40+i) = val; |
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328 } |
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329 } |
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330 else |
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331 { |
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332 (*current_liboctave_error_handler) |
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333 ("daspk: inequality constraint types size mismatch"); |
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334 integration_error = true; |
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335 return retval; |
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336 } |
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337 } |
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338 // Fall through... |
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339 |
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340 case 0: |
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341 case 2: |
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342 info(9) = eiq; |
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343 break; |
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344 |
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345 default: |
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346 (*current_liboctave_error_handler) |
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347 ("daspk: invalid value for enforce inequality constraints option"); |
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348 integration_error = true; |
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349 return retval; |
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350 } |
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351 |
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352 if (ccic) |
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353 { |
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354 if (ccic == 1) |
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355 { |
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356 // XXX FIXME XXX -- this code is duplicated below. |
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357 |
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358 Array<int> av = algebraic_variables (); |
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359 |
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360 if (av.length () == n) |
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361 { |
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362 int lid; |
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363 if (eiq == 0 || eiq == 2) |
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364 lid = 40; |
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365 else if (eiq == 1 || eiq == 3) |
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366 lid = 40 + n; |
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367 else |
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368 abort (); |
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369 |
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370 for (int i = 0; i < n; i++) |
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371 iwork(lid+i) = av(i) ? -1 : 1; |
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372 } |
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373 else |
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374 { |
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375 (*current_liboctave_error_handler) |
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376 ("daspk: algebraic variables size mismatch"); |
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377 integration_error = true; |
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378 return retval; |
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379 } |
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380 } |
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381 else if (ccic != 2) |
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382 { |
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383 (*current_liboctave_error_handler) |
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384 ("daspk: invalid value for compute consistent initial condition option"); |
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385 integration_error = true; |
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386 return retval; |
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387 } |
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388 |
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389 info(10) = ccic; |
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390 } |
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391 |
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392 if (eavfet) |
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393 { |
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394 info(15) = 1; |
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395 |
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396 // XXX FIXME XXX -- this code is duplicated above. |
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397 |
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398 Array<int> av = algebraic_variables (); |
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399 |
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400 if (av.length () == n) |
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401 { |
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402 int lid; |
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403 if (eiq == 0 || eiq == 2) |
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404 lid = 40; |
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405 else if (eiq == 1 || eiq == 3) |
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406 lid = 40 + n; |
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407 else |
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408 abort (); |
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409 |
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410 for (int i = 0; i < n; i++) |
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411 iwork(lid+i) = av(i) ? -1 : 1; |
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412 } |
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413 } |
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414 |
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415 if (use_initial_condition_heuristics ()) |
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416 { |
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417 Array<double> ich = initial_condition_heuristics (); |
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418 |
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419 if (ich.length () == 6) |
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420 { |
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421 iwork(31) = NINT (ich(0)); |
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422 iwork(32) = NINT (ich(1)); |
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423 iwork(33) = NINT (ich(2)); |
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424 iwork(34) = NINT (ich(3)); |
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425 |
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426 rwork(13) = ich(4); |
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427 rwork(14) = ich(5); |
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428 } |
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429 else |
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430 { |
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431 (*current_liboctave_error_handler) |
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432 ("daspk: invalid initial condition heuristics option"); |
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433 integration_error = true; |
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434 return retval; |
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435 } |
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436 |
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437 info(16) = 1; |
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438 } |
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439 |
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440 int pici = print_initial_condition_info (); |
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441 switch (pici) |
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442 { |
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443 case 0: |
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444 case 1: |
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445 case 2: |
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446 info(17) = pici; |
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447 break; |
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448 |
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449 default: |
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450 (*current_liboctave_error_handler) |
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451 ("daspk: invalid value for print initial condition info option"); |
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452 integration_error = true; |
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453 return retval; |
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454 break; |
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455 } |
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456 |
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457 DASPK_options::reset = false; |
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458 |
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459 restart = false; |
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460 } |
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461 |
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462 static double *dummy = 0; |
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463 static int *idummy = 0; |
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464 |
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465 F77_XFCN (ddaspk, DDASPK, (ddaspk_f, nn, t, px, pxdot, tout, pinfo, |
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466 prel_tol, pabs_tol, istate, prwork, lrw, |
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467 piwork, liw, dummy, idummy, ddaspk_j, |
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468 ddaspk_psol)); |
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469 |
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470 if (f77_exception_encountered) |
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471 { |
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472 integration_error = true; |
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473 (*current_liboctave_error_handler) ("unrecoverable error in daspk"); |
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474 } |
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475 else |
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476 { |
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3997
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477 switch (istate) |
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478 { |
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479 case 1: // A step was successfully taken in intermediate-output |
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480 // mode. The code has not yet reached TOUT. |
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481 case 2: // The integration to TSTOP was successfully completed |
|
|
482 // (T=TSTOP) by stepping exactly to TSTOP. |
|
|
483 case 3: // The integration to TOUT was successfully completed |
|
|
484 // (T=TOUT) by stepping past TOUT. Y(*) is obtained by |
|
|
485 // interpolation. YPRIME(*) is obtained by interpolation. |
|
3996
|
486 case 4: // The initial condition calculation, with |
|
|
487 // INFO(11) > 0, was successful, and INFO(14) = 1. |
|
|
488 // No integration steps were taken, and the solution |
|
|
489 // is not considered to have been started. |
|
3912
|
490 retval = x; |
|
|
491 t = tout; |
|
|
492 break; |
|
|
493 |
|
|
494 case -1: // A large amount of work has been expended. (~500 steps). |
|
|
495 case -2: // The error tolerances are too stringent. |
|
|
496 case -3: // The local error test cannot be satisfied because you |
|
|
497 // specified a zero component in ATOL and the |
|
|
498 // corresponding computed solution component is zero. |
|
|
499 // Thus, a pure relative error test is impossible for |
|
|
500 // this component. |
|
|
501 case -6: // DDASPK had repeated error test failures on the last |
|
|
502 // attempted step. |
|
|
503 case -7: // The corrector could not converge. |
|
|
504 case -8: // The matrix of partial derivatives is singular. |
|
|
505 case -9: // The corrector could not converge. There were repeated |
|
|
506 // error test failures in this step. |
|
|
507 case -10: // The corrector could not converge because IRES was |
|
|
508 // equal to minus one. |
|
|
509 case -11: // IRES equal to -2 was encountered and control is being |
|
|
510 // returned to the calling program. |
|
|
511 case -12: // DDASPK failed to compute the initial YPRIME. |
|
3996
|
512 case -13: // Unrecoverable error encountered inside user's |
|
|
513 // PSOL routine, and control is being returned to |
|
|
514 // the calling program. |
|
|
515 case -14: // The Krylov linear system solver could not |
|
|
516 // achieve convergence. |
|
3912
|
517 case -33: // The code has encountered trouble from which it cannot |
|
|
518 // recover. A message is printed explaining the trouble |
|
|
519 // and control is returned to the calling program. For |
|
|
520 // example, this occurs when invalid input is detected. |
|
3996
|
521 integration_error = true; |
|
|
522 break; |
|
|
523 |
|
3912
|
524 default: |
|
3995
|
525 integration_error = true; |
|
3996
|
526 (*current_liboctave_error_handler) |
|
3997
|
527 ("unrecognized value of istate (= %d) returned from ddaspk", |
|
|
528 istate); |
|
3912
|
529 break; |
|
|
530 } |
|
|
531 } |
|
|
532 |
|
|
533 return retval; |
|
|
534 } |
|
|
535 |
|
|
536 Matrix |
|
|
537 DASPK::do_integrate (const ColumnVector& tout) |
|
|
538 { |
|
|
539 Matrix dummy; |
|
|
540 return integrate (tout, dummy); |
|
|
541 } |
|
|
542 |
|
|
543 Matrix |
|
|
544 DASPK::integrate (const ColumnVector& tout, Matrix& xdot_out) |
|
|
545 { |
|
|
546 Matrix retval; |
|
4049
|
547 |
|
3912
|
548 int n_out = tout.capacity (); |
|
4049
|
549 int n = size (); |
|
3912
|
550 |
|
|
551 if (n_out > 0 && n > 0) |
|
|
552 { |
|
|
553 retval.resize (n_out, n); |
|
|
554 xdot_out.resize (n_out, n); |
|
|
555 |
|
|
556 for (int i = 0; i < n; i++) |
|
|
557 { |
|
|
558 retval.elem (0, i) = x.elem (i); |
|
|
559 xdot_out.elem (0, i) = xdot.elem (i); |
|
|
560 } |
|
|
561 |
|
|
562 for (int j = 1; j < n_out; j++) |
|
|
563 { |
|
|
564 ColumnVector x_next = do_integrate (tout.elem (j)); |
|
|
565 |
|
|
566 if (integration_error) |
|
|
567 return retval; |
|
|
568 |
|
|
569 for (int i = 0; i < n; i++) |
|
|
570 { |
|
|
571 retval.elem (j, i) = x_next.elem (i); |
|
|
572 xdot_out.elem (j, i) = xdot.elem (i); |
|
|
573 } |
|
|
574 } |
|
|
575 } |
|
|
576 |
|
|
577 return retval; |
|
|
578 } |
|
|
579 |
|
|
580 Matrix |
|
|
581 DASPK::do_integrate (const ColumnVector& tout, const ColumnVector& tcrit) |
|
|
582 { |
|
|
583 Matrix dummy; |
|
|
584 return integrate (tout, dummy, tcrit); |
|
|
585 } |
|
|
586 |
|
|
587 Matrix |
|
|
588 DASPK::integrate (const ColumnVector& tout, Matrix& xdot_out, |
|
|
589 const ColumnVector& tcrit) |
|
|
590 { |
|
|
591 Matrix retval; |
|
4049
|
592 |
|
3912
|
593 int n_out = tout.capacity (); |
|
4049
|
594 int n = size (); |
|
3912
|
595 |
|
|
596 if (n_out > 0 && n > 0) |
|
|
597 { |
|
|
598 retval.resize (n_out, n); |
|
|
599 xdot_out.resize (n_out, n); |
|
|
600 |
|
|
601 for (int i = 0; i < n; i++) |
|
|
602 { |
|
|
603 retval.elem (0, i) = x.elem (i); |
|
|
604 xdot_out.elem (0, i) = xdot.elem (i); |
|
|
605 } |
|
|
606 |
|
|
607 int n_crit = tcrit.capacity (); |
|
|
608 |
|
|
609 if (n_crit > 0) |
|
|
610 { |
|
|
611 int i_crit = 0; |
|
|
612 int i_out = 1; |
|
|
613 double next_crit = tcrit.elem (0); |
|
|
614 double next_out; |
|
|
615 while (i_out < n_out) |
|
|
616 { |
|
|
617 bool do_restart = false; |
|
|
618 |
|
|
619 next_out = tout.elem (i_out); |
|
|
620 if (i_crit < n_crit) |
|
|
621 next_crit = tcrit.elem (i_crit); |
|
|
622 |
|
|
623 bool save_output; |
|
|
624 double t_out; |
|
|
625 |
|
|
626 if (next_crit == next_out) |
|
|
627 { |
|
|
628 set_stop_time (next_crit); |
|
|
629 t_out = next_out; |
|
|
630 save_output = true; |
|
|
631 i_out++; |
|
|
632 i_crit++; |
|
|
633 do_restart = true; |
|
|
634 } |
|
|
635 else if (next_crit < next_out) |
|
|
636 { |
|
|
637 if (i_crit < n_crit) |
|
|
638 { |
|
|
639 set_stop_time (next_crit); |
|
|
640 t_out = next_crit; |
|
|
641 save_output = false; |
|
|
642 i_crit++; |
|
|
643 do_restart = true; |
|
|
644 } |
|
|
645 else |
|
|
646 { |
|
|
647 clear_stop_time (); |
|
|
648 t_out = next_out; |
|
|
649 save_output = true; |
|
|
650 i_out++; |
|
|
651 } |
|
|
652 } |
|
|
653 else |
|
|
654 { |
|
|
655 set_stop_time (next_crit); |
|
|
656 t_out = next_out; |
|
|
657 save_output = true; |
|
|
658 i_out++; |
|
|
659 } |
|
|
660 |
|
|
661 ColumnVector x_next = do_integrate (t_out); |
|
|
662 |
|
|
663 if (integration_error) |
|
|
664 return retval; |
|
|
665 |
|
|
666 if (save_output) |
|
|
667 { |
|
|
668 for (int i = 0; i < n; i++) |
|
|
669 { |
|
|
670 retval.elem (i_out-1, i) = x_next.elem (i); |
|
|
671 xdot_out.elem (i_out-1, i) = xdot.elem (i); |
|
|
672 } |
|
|
673 } |
|
|
674 |
|
|
675 if (do_restart) |
|
|
676 force_restart (); |
|
|
677 } |
|
|
678 } |
|
|
679 else |
|
|
680 { |
|
|
681 retval = integrate (tout, xdot_out); |
|
|
682 |
|
|
683 if (integration_error) |
|
|
684 return retval; |
|
|
685 } |
|
|
686 } |
|
|
687 |
|
|
688 return retval; |
|
|
689 } |
|
|
690 |
|
3995
|
691 std::string |
|
|
692 DASPK::error_message (void) const |
|
|
693 { |
|
|
694 std::string retval; |
|
|
695 |
|
4051
|
696 OSSTREAM buf; |
|
|
697 buf << t << OSSTREAM_ENDS; |
|
|
698 std::string t_curr = OSSTREAM_STR (buf); |
|
|
699 OSSTREAM_FREEZE (buf); |
|
4043
|
700 |
|
3997
|
701 switch (istate) |
|
3995
|
702 { |
|
3996
|
703 case 1: |
|
|
704 retval = "a step was successfully taken in intermediate-output mode."; |
|
|
705 break; |
|
|
706 |
|
|
707 case 2: |
|
|
708 retval = "integration completed by stepping exactly to TOUT"; |
|
|
709 break; |
|
|
710 |
|
|
711 case 3: |
|
|
712 retval = "integration to tout completed by stepping past TOUT"; |
|
|
713 break; |
|
|
714 |
|
|
715 case 4: |
|
|
716 retval = "initial condition calculation completed successfully"; |
|
|
717 break; |
|
|
718 |
|
|
719 case -1: |
|
4043
|
720 retval = std::string ("a large amount of work has been expended (t =") |
|
|
721 + t_curr + ")"; |
|
3996
|
722 break; |
|
|
723 |
|
|
724 case -2: |
|
|
725 retval = "the error tolerances are too stringent"; |
|
|
726 break; |
|
|
727 |
|
|
728 case -3: |
|
4043
|
729 retval = std::string ("error weight became zero during problem. (t = ") |
|
|
730 + t_curr |
|
|
731 + "; solution component i vanished, and atol or atol(i) == 0)"; |
|
3996
|
732 break; |
|
|
733 |
|
|
734 case -6: |
|
4043
|
735 retval = std::string ("repeated error test failures on the last attempted step (t = ") |
|
|
736 + t_curr + ")"; |
|
3996
|
737 break; |
|
|
738 |
|
|
739 case -7: |
|
4043
|
740 retval = std::string ("the corrector could not converge (t = ") |
|
|
741 + t_curr + ")"; |
|
3996
|
742 break; |
|
|
743 |
|
|
744 case -8: |
|
4043
|
745 retval = std::string ("the matrix of partial derivatives is singular (t = ") |
|
|
746 + t_curr + ")"; |
|
3996
|
747 break; |
|
|
748 |
|
|
749 case -9: |
|
4043
|
750 retval = std::string ("the corrector could not converge (t = ") |
|
|
751 + t_curr + "; repeated test failures)"; |
|
3996
|
752 break; |
|
|
753 |
|
|
754 case -10: |
|
4043
|
755 retval = std::string ("corrector could not converge because IRES was -1 (t = ") |
|
|
756 + t_curr + ")"; |
|
3996
|
757 break; |
|
|
758 |
|
|
759 case -11: |
|
4043
|
760 retval = std::string ("return requested in user-supplied function (t = ") |
|
|
761 + t_curr + ")"; |
|
3996
|
762 break; |
|
|
763 |
|
|
764 case -12: |
|
|
765 retval = "failed to compute consistent initial conditions"; |
|
|
766 break; |
|
|
767 |
|
|
768 case -13: |
|
4043
|
769 retval = std::string ("unrecoverable error encountered inside user's PSOL function (t = ") |
|
|
770 + t_curr + ")"; |
|
3996
|
771 break; |
|
|
772 |
|
|
773 case -14: |
|
4043
|
774 retval = std::string ("the Krylov linear system solver failed to converge (t = ") |
|
|
775 + t_curr + ")"; |
|
3996
|
776 break; |
|
|
777 |
|
|
778 case -33: |
|
|
779 retval = "unrecoverable error (see printed message)"; |
|
|
780 break; |
|
|
781 |
|
3995
|
782 default: |
|
|
783 retval = "unknown error state"; |
|
|
784 break; |
|
|
785 } |
|
|
786 |
|
|
787 return retval; |
|
|
788 } |
|
|
789 |
|
3912
|
790 /* |
|
|
791 ;;; Local Variables: *** |
|
|
792 ;;; mode: C++ *** |
|
|
793 ;;; End: *** |
|
|
794 */ |
