Mercurial > octave-nkf
annotate liboctave/DASPK.cc @ 11495:8a5e980da6aa
style fixes
author | John W. Eaton <jwe@octave.org> |
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date | Thu, 13 Jan 2011 02:09:02 -0500 |
parents | 12884915a8e4 |
children | 4638800cd660 |
rev | line source |
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3912 | 1 /* |
2 | |
8920 | 3 Copyright (C) 1996, 1997, 2002, 2003, 2004, 2005, 2006, 2007, 2008 |
7017 | 4 John W. Eaton |
3912 | 5 |
6 This file is part of Octave. | |
7 | |
8 Octave is free software; you can redistribute it and/or modify it | |
9 under the terms of the GNU General Public License as published by the | |
7016 | 10 Free Software Foundation; either version 3 of the License, or (at your |
11 option) any later version. | |
3912 | 12 |
13 Octave is distributed in the hope that it will be useful, but WITHOUT | |
14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
16 for more details. | |
17 | |
18 You should have received a copy of the GNU General Public License | |
7016 | 19 along with Octave; see the file COPYING. If not, see |
20 <http://www.gnu.org/licenses/>. | |
3912 | 21 |
22 */ | |
23 | |
24 #ifdef HAVE_CONFIG_H | |
25 #include <config.h> | |
26 #endif | |
27 | |
28 #include <cfloat> | |
29 | |
5765 | 30 #include <sstream> |
31 | |
3912 | 32 #include "DASPK.h" |
33 #include "f77-fcn.h" | |
34 #include "lo-error.h" | |
7231 | 35 #include "lo-math.h" |
4155 | 36 #include "quit.h" |
3912 | 37 |
5275 | 38 typedef octave_idx_type (*daspk_fcn_ptr) (const double&, const double*, |
11495 | 39 const double*, const double&, |
40 double*, octave_idx_type&, | |
41 double*, octave_idx_type*); | |
3912 | 42 |
5275 | 43 typedef octave_idx_type (*daspk_jac_ptr) (const double&, const double*, |
11495 | 44 const double*, double*, |
45 const double&, double*, | |
46 octave_idx_type*); | |
3912 | 47 |
11495 | 48 typedef octave_idx_type (*daspk_psol_ptr) (const octave_idx_type&, |
49 const double&, const double*, | |
50 const double*, const double*, | |
51 const double&, const double*, | |
52 double*, octave_idx_type*, | |
53 double*, const double&, | |
54 octave_idx_type&, double*, | |
55 octave_idx_type*); | |
3912 | 56 |
57 extern "C" | |
4552 | 58 { |
59 F77_RET_T | |
11495 | 60 F77_FUNC (ddaspk, DDASPK) (daspk_fcn_ptr, const octave_idx_type&, |
61 double&, double*, double*, double&, | |
62 const octave_idx_type*, const double*, | |
63 const double*, octave_idx_type&, | |
64 double*, const octave_idx_type&, | |
65 octave_idx_type*, const octave_idx_type&, | |
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66 const double*, const octave_idx_type*, |
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67 daspk_jac_ptr, daspk_psol_ptr); |
4552 | 68 } |
3912 | 69 |
70 static DAEFunc::DAERHSFunc user_fun; | |
71 static DAEFunc::DAEJacFunc user_jac; | |
5275 | 72 static octave_idx_type nn; |
3912 | 73 |
5275 | 74 static octave_idx_type |
3912 | 75 ddaspk_f (const double& time, const double *state, const double *deriv, |
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76 const double&, double *delta, octave_idx_type& ires, double *, octave_idx_type *) |
3912 | 77 { |
4180 | 78 BEGIN_INTERRUPT_WITH_EXCEPTIONS; |
79 | |
3912 | 80 ColumnVector tmp_deriv (nn); |
81 ColumnVector tmp_state (nn); | |
82 ColumnVector tmp_delta (nn); | |
83 | |
5275 | 84 for (octave_idx_type i = 0; i < nn; i++) |
3912 | 85 { |
86 tmp_deriv.elem (i) = deriv [i]; | |
87 tmp_state.elem (i) = state [i]; | |
88 } | |
89 | |
90 tmp_delta = user_fun (tmp_state, tmp_deriv, time, ires); | |
91 | |
92 if (ires >= 0) | |
93 { | |
94 if (tmp_delta.length () == 0) | |
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95 ires = -2; |
3912 | 96 else |
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97 { |
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98 for (octave_idx_type i = 0; i < nn; i++) |
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99 delta [i] = tmp_delta.elem (i); |
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100 } |
3912 | 101 } |
102 | |
4180 | 103 END_INTERRUPT_WITH_EXCEPTIONS; |
104 | |
3912 | 105 return 0; |
106 } | |
107 | |
108 //NEQ, T, Y, YPRIME, SAVR, WK, CJ, WGHT, | |
109 //C WP, IWP, B, EPLIN, IER, RPAR, IPAR) | |
110 | |
5275 | 111 static octave_idx_type |
112 ddaspk_psol (const octave_idx_type&, const double&, const double *, | |
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113 const double *, const double *, const double&, |
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114 const double *, double *, octave_idx_type *, double *, |
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115 const double&, octave_idx_type&, double *, octave_idx_type*) |
3912 | 116 { |
4180 | 117 BEGIN_INTERRUPT_WITH_EXCEPTIONS; |
118 | |
3912 | 119 abort (); |
4180 | 120 |
121 END_INTERRUPT_WITH_EXCEPTIONS; | |
122 | |
3946 | 123 return 0; |
3912 | 124 } |
125 | |
3991 | 126 |
5275 | 127 static octave_idx_type |
3991 | 128 ddaspk_j (const double& time, const double *state, const double *deriv, |
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129 double *pd, const double& cj, double *, octave_idx_type *) |
3912 | 130 { |
4180 | 131 BEGIN_INTERRUPT_WITH_EXCEPTIONS; |
132 | |
5775 | 133 // FIXME -- would be nice to avoid copying the data. |
3991 | 134 |
3912 | 135 ColumnVector tmp_state (nn); |
136 ColumnVector tmp_deriv (nn); | |
137 | |
5275 | 138 for (octave_idx_type i = 0; i < nn; i++) |
3991 | 139 { |
140 tmp_deriv.elem (i) = deriv [i]; | |
141 tmp_state.elem (i) = state [i]; | |
142 } | |
3912 | 143 |
3991 | 144 Matrix tmp_pd = user_jac (tmp_state, tmp_deriv, time, cj); |
3912 | 145 |
5275 | 146 for (octave_idx_type j = 0; j < nn; j++) |
147 for (octave_idx_type i = 0; i < nn; i++) | |
3991 | 148 pd [nn * j + i] = tmp_pd.elem (i, j); |
3912 | 149 |
4180 | 150 END_INTERRUPT_WITH_EXCEPTIONS; |
151 | |
3912 | 152 return 0; |
153 } | |
154 | |
155 ColumnVector | |
156 DASPK::do_integrate (double tout) | |
157 { | |
5775 | 158 // FIXME -- should handle all this option stuff just once |
4047 | 159 // for each new problem. |
160 | |
3912 | 161 ColumnVector retval; |
162 | |
4049 | 163 if (! initialized || restart || DAEFunc::reset|| DASPK_options::reset) |
3912 | 164 { |
4049 | 165 integration_error = false; |
166 | |
167 initialized = true; | |
168 | |
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169 info.resize (20, 1); |
3912 | 170 |
5275 | 171 for (octave_idx_type i = 0; i < 20; i++) |
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172 info(i) = 0; |
4049 | 173 |
174 pinfo = info.fortran_vec (); | |
3912 | 175 |
5275 | 176 octave_idx_type n = size (); |
3912 | 177 |
4049 | 178 nn = n; |
179 | |
180 info(0) = 0; | |
3912 | 181 |
4049 | 182 if (stop_time_set) |
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183 { |
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184 rwork(0) = stop_time; |
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185 info(3) = 1; |
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186 } |
4049 | 187 else |
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188 info(3) = 0; |
3912 | 189 |
4049 | 190 px = x.fortran_vec (); |
191 pxdot = xdot.fortran_vec (); | |
192 | |
193 // DAEFunc | |
194 | |
195 user_fun = DAEFunc::function (); | |
196 user_jac = DAEFunc::jacobian_function (); | |
3912 | 197 |
4049 | 198 if (user_fun) |
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199 { |
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200 octave_idx_type ires = 0; |
3912 | 201 |
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202 ColumnVector res = (*user_fun) (x, xdot, t, ires); |
3912 | 203 |
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204 if (res.length () != x.length ()) |
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205 { |
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206 (*current_liboctave_error_handler) |
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207 ("daspk: inconsistent sizes for state and residual vectors"); |
3912 | 208 |
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209 integration_error = true; |
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210 return retval; |
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211 } |
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212 } |
4049 | 213 else |
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214 { |
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215 (*current_liboctave_error_handler) |
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216 ("daspk: no user supplied RHS subroutine!"); |
4049 | 217 |
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218 integration_error = true; |
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219 return retval; |
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220 } |
4049 | 221 |
222 info(4) = user_jac ? 1 : 0; | |
223 | |
224 DAEFunc::reset = false; | |
225 | |
5275 | 226 octave_idx_type eiq = enforce_inequality_constraints (); |
227 octave_idx_type ccic = compute_consistent_initial_condition (); | |
228 octave_idx_type eavfet = exclude_algebraic_variables_from_error_test (); | |
4144 | 229 |
230 liw = 40 + n; | |
231 if (eiq == 1 || eiq == 3) | |
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232 liw += n; |
4144 | 233 if (ccic == 1 || eavfet == 1) |
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234 liw += n; |
4144 | 235 |
4842 | 236 lrw = 50 + 9*n + n*n; |
4144 | 237 if (eavfet == 1) |
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238 lrw += n; |
4144 | 239 |
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240 iwork.resize (liw, 1); |
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241 rwork.resize (lrw, 1); |
4144 | 242 |
243 piwork = iwork.fortran_vec (); | |
244 prwork = rwork.fortran_vec (); | |
245 | |
4049 | 246 // DASPK_options |
247 | |
4144 | 248 abs_tol = absolute_tolerance (); |
249 rel_tol = relative_tolerance (); | |
4049 | 250 |
5275 | 251 octave_idx_type abs_tol_len = abs_tol.length (); |
252 octave_idx_type rel_tol_len = rel_tol.length (); | |
4049 | 253 |
254 if (abs_tol_len == 1 && rel_tol_len == 1) | |
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255 { |
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256 info(1) = 0; |
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257 } |
4049 | 258 else if (abs_tol_len == n && rel_tol_len == n) |
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259 { |
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260 info(1) = 1; |
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261 } |
4049 | 262 else |
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263 { |
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264 (*current_liboctave_error_handler) |
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265 ("daspk: inconsistent sizes for tolerance arrays"); |
3912 | 266 |
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267 integration_error = true; |
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268 return retval; |
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269 } |
3912 | 270 |
4144 | 271 pabs_tol = abs_tol.fortran_vec (); |
272 prel_tol = rel_tol.fortran_vec (); | |
273 | |
4049 | 274 double hmax = maximum_step_size (); |
275 if (hmax >= 0.0) | |
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276 { |
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277 rwork(1) = hmax; |
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278 info(6) = 1; |
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279 } |
4049 | 280 else |
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281 info(6) = 0; |
3998 | 282 |
4049 | 283 double h0 = initial_step_size (); |
284 if (h0 >= 0.0) | |
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285 { |
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286 rwork(2) = h0; |
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287 info(7) = 1; |
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288 } |
4047 | 289 else |
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290 info(7) = 0; |
4049 | 291 |
5275 | 292 octave_idx_type maxord = maximum_order (); |
4049 | 293 if (maxord >= 0) |
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294 { |
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295 if (maxord > 0 && maxord < 6) |
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296 { |
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297 info(8) = 1; |
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298 iwork(2) = maxord; |
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299 } |
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300 else |
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301 { |
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302 (*current_liboctave_error_handler) |
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303 ("daspk: invalid value for maximum order"); |
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304 integration_error = true; |
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305 return retval; |
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306 } |
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307 } |
4049 | 308 |
309 switch (eiq) | |
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310 { |
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311 case 1: |
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312 case 3: |
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313 { |
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314 Array<octave_idx_type> ict = inequality_constraint_types (); |
4049 | 315 |
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316 if (ict.length () == n) |
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317 { |
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318 for (octave_idx_type i = 0; i < n; i++) |
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319 { |
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320 octave_idx_type val = ict(i); |
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321 if (val < -2 || val > 2) |
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322 { |
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323 (*current_liboctave_error_handler) |
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324 ("daspk: invalid value for inequality constraint type"); |
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325 integration_error = true; |
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326 return retval; |
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327 } |
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328 iwork(40+i) = val; |
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329 } |
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330 } |
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331 else |
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332 { |
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333 (*current_liboctave_error_handler) |
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334 ("daspk: inequality constraint types size mismatch"); |
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335 integration_error = true; |
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336 return retval; |
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337 } |
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338 } |
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339 // Fall through... |
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341 case 0: |
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342 case 2: |
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343 info(9) = eiq; |
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344 break; |
4049 | 345 |
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346 default: |
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347 (*current_liboctave_error_handler) |
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348 ("daspk: invalid value for enforce inequality constraints option"); |
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349 integration_error = true; |
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350 return retval; |
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351 } |
4049 | 352 |
353 if (ccic) | |
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354 { |
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355 if (ccic == 1) |
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356 { |
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357 // FIXME -- this code is duplicated below. |
4049 | 358 |
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359 Array<octave_idx_type> av = algebraic_variables (); |
4047 | 360 |
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361 if (av.length () == n) |
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362 { |
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363 octave_idx_type lid; |
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364 if (eiq == 0 || eiq == 2) |
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365 lid = 40; |
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366 else if (eiq == 1 || eiq == 3) |
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367 lid = 40 + n; |
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368 else |
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369 abort (); |
4047 | 370 |
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371 for (octave_idx_type i = 0; i < n; i++) |
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372 iwork(lid+i) = av(i) ? -1 : 1; |
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373 } |
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374 else |
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375 { |
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376 (*current_liboctave_error_handler) |
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377 ("daspk: algebraic variables size mismatch"); |
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378 integration_error = true; |
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379 return retval; |
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380 } |
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381 } |
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382 else if (ccic != 2) |
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383 { |
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384 (*current_liboctave_error_handler) |
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385 ("daspk: invalid value for compute consistent initial condition option"); |
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386 integration_error = true; |
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387 return retval; |
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388 } |
4047 | 389 |
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390 info(10) = ccic; |
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391 } |
4047 | 392 |
4049 | 393 if (eavfet) |
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394 { |
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395 info(15) = 1; |
4047 | 396 |
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397 // FIXME -- this code is duplicated above. |
4047 | 398 |
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399 Array<octave_idx_type> av = algebraic_variables (); |
4047 | 400 |
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401 if (av.length () == n) |
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402 { |
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403 octave_idx_type lid; |
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404 if (eiq == 0 || eiq == 2) |
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405 lid = 40; |
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406 else if (eiq == 1 || eiq == 3) |
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407 lid = 40 + n; |
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408 else |
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409 abort (); |
4047 | 410 |
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411 for (octave_idx_type i = 0; i < n; i++) |
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412 iwork(lid+i) = av(i) ? -1 : 1; |
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413 } |
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414 } |
4049 | 415 |
416 if (use_initial_condition_heuristics ()) | |
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417 { |
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418 Array<double> ich = initial_condition_heuristics (); |
4049 | 419 |
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420 if (ich.length () == 6) |
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421 { |
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422 iwork(31) = NINTbig (ich(0)); |
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423 iwork(32) = NINTbig (ich(1)); |
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424 iwork(33) = NINTbig (ich(2)); |
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425 iwork(34) = NINTbig (ich(3)); |
4049 | 426 |
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427 rwork(13) = ich(4); |
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428 rwork(14) = ich(5); |
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429 } |
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430 else |
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431 { |
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432 (*current_liboctave_error_handler) |
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433 ("daspk: invalid initial condition heuristics option"); |
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434 integration_error = true; |
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435 return retval; |
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436 } |
4049 | 437 |
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438 info(16) = 1; |
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439 } |
4049 | 440 |
5275 | 441 octave_idx_type pici = print_initial_condition_info (); |
4049 | 442 switch (pici) |
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443 { |
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444 case 0: |
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445 case 1: |
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446 case 2: |
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447 info(17) = pici; |
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448 break; |
4049 | 449 |
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450 default: |
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451 (*current_liboctave_error_handler) |
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452 ("daspk: invalid value for print initial condition info option"); |
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453 integration_error = true; |
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454 return retval; |
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455 break; |
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456 } |
4047 | 457 |
4049 | 458 DASPK_options::reset = false; |
4047 | 459 |
4049 | 460 restart = false; |
4047 | 461 } |
462 | |
4049 | 463 static double *dummy = 0; |
5275 | 464 static octave_idx_type *idummy = 0; |
4047 | 465 |
4049 | 466 F77_XFCN (ddaspk, DDASPK, (ddaspk_f, nn, t, px, pxdot, tout, pinfo, |
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467 prel_tol, pabs_tol, istate, prwork, lrw, |
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468 piwork, liw, dummy, idummy, ddaspk_j, |
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469 ddaspk_psol)); |
3912 | 470 |
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471 switch (istate) |
3912 | 472 { |
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473 case 1: // A step was successfully taken in intermediate-output |
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474 // mode. The code has not yet reached TOUT. |
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475 case 2: // The integration to TSTOP was successfully completed |
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476 // (T=TSTOP) by stepping exactly to TSTOP. |
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477 case 3: // The integration to TOUT was successfully completed |
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478 // (T=TOUT) by stepping past TOUT. Y(*) is obtained by |
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479 // interpolation. YPRIME(*) is obtained by interpolation. |
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480 case 4: // The initial condition calculation, with |
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481 // INFO(11) > 0, was successful, and INFO(14) = 1. |
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482 // No integration steps were taken, and the solution |
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483 // is not considered to have been started. |
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484 retval = x; |
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485 t = tout; |
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486 break; |
3912 | 487 |
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488 case -1: // A large amount of work has been expended. (~500 steps). |
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489 case -2: // The error tolerances are too stringent. |
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490 case -3: // The local error test cannot be satisfied because you |
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491 // specified a zero component in ATOL and the |
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492 // corresponding computed solution component is zero. |
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493 // Thus, a pure relative error test is impossible for |
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494 // this component. |
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495 case -6: // DDASPK had repeated error test failures on the last |
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496 // attempted step. |
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497 case -7: // The corrector could not converge. |
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498 case -8: // The matrix of partial derivatives is singular. |
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499 case -9: // The corrector could not converge. There were repeated |
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500 // error test failures in this step. |
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501 case -10: // The corrector could not converge because IRES was |
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502 // equal to minus one. |
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503 case -11: // IRES equal to -2 was encountered and control is being |
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504 // returned to the calling program. |
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505 case -12: // DDASPK failed to compute the initial YPRIME. |
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506 case -13: // Unrecoverable error encountered inside user's |
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507 // PSOL routine, and control is being returned to |
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508 // the calling program. |
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509 case -14: // The Krylov linear system solver could not |
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510 // achieve convergence. |
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511 case -33: // The code has encountered trouble from which it cannot |
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512 // recover. A message is printed explaining the trouble |
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513 // and control is returned to the calling program. For |
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514 // example, this occurs when invalid input is detected. |
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515 integration_error = true; |
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516 break; |
3996 | 517 |
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518 default: |
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519 integration_error = true; |
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520 (*current_liboctave_error_handler) |
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521 ("unrecognized value of istate (= %d) returned from ddaspk", |
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522 istate); |
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523 break; |
3912 | 524 } |
525 | |
526 return retval; | |
527 } | |
528 | |
529 Matrix | |
530 DASPK::do_integrate (const ColumnVector& tout) | |
531 { | |
532 Matrix dummy; | |
533 return integrate (tout, dummy); | |
534 } | |
535 | |
536 Matrix | |
537 DASPK::integrate (const ColumnVector& tout, Matrix& xdot_out) | |
538 { | |
539 Matrix retval; | |
4049 | 540 |
5275 | 541 octave_idx_type n_out = tout.capacity (); |
542 octave_idx_type n = size (); | |
3912 | 543 |
544 if (n_out > 0 && n > 0) | |
545 { | |
546 retval.resize (n_out, n); | |
547 xdot_out.resize (n_out, n); | |
548 | |
5275 | 549 for (octave_idx_type i = 0; i < n; i++) |
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550 { |
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551 retval.elem (0, i) = x.elem (i); |
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552 xdot_out.elem (0, i) = xdot.elem (i); |
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553 } |
3912 | 554 |
5275 | 555 for (octave_idx_type j = 1; j < n_out; j++) |
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556 { |
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557 ColumnVector x_next = do_integrate (tout.elem (j)); |
3912 | 558 |
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559 if (integration_error) |
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560 return retval; |
3912 | 561 |
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562 for (octave_idx_type i = 0; i < n; i++) |
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563 { |
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564 retval.elem (j, i) = x_next.elem (i); |
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565 xdot_out.elem (j, i) = xdot.elem (i); |
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566 } |
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567 } |
3912 | 568 } |
569 | |
570 return retval; | |
571 } | |
572 | |
573 Matrix | |
574 DASPK::do_integrate (const ColumnVector& tout, const ColumnVector& tcrit) | |
575 { | |
576 Matrix dummy; | |
577 return integrate (tout, dummy, tcrit); | |
578 } | |
579 | |
580 Matrix | |
581 DASPK::integrate (const ColumnVector& tout, Matrix& xdot_out, | |
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582 const ColumnVector& tcrit) |
3912 | 583 { |
584 Matrix retval; | |
4049 | 585 |
5275 | 586 octave_idx_type n_out = tout.capacity (); |
587 octave_idx_type n = size (); | |
3912 | 588 |
589 if (n_out > 0 && n > 0) | |
590 { | |
591 retval.resize (n_out, n); | |
592 xdot_out.resize (n_out, n); | |
593 | |
5275 | 594 for (octave_idx_type i = 0; i < n; i++) |
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595 { |
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596 retval.elem (0, i) = x.elem (i); |
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597 xdot_out.elem (0, i) = xdot.elem (i); |
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598 } |
3912 | 599 |
5275 | 600 octave_idx_type n_crit = tcrit.capacity (); |
3912 | 601 |
602 if (n_crit > 0) | |
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603 { |
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604 octave_idx_type i_crit = 0; |
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605 octave_idx_type i_out = 1; |
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606 double next_crit = tcrit.elem (0); |
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607 double next_out; |
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608 while (i_out < n_out) |
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609 { |
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610 bool do_restart = false; |
3912 | 611 |
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612 next_out = tout.elem (i_out); |
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613 if (i_crit < n_crit) |
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614 next_crit = tcrit.elem (i_crit); |
3912 | 615 |
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616 bool save_output; |
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617 double t_out; |
3912 | 618 |
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619 if (next_crit == next_out) |
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620 { |
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621 set_stop_time (next_crit); |
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622 t_out = next_out; |
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623 save_output = true; |
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624 i_out++; |
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625 i_crit++; |
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626 do_restart = true; |
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627 } |
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628 else if (next_crit < next_out) |
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629 { |
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630 if (i_crit < n_crit) |
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631 { |
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632 set_stop_time (next_crit); |
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633 t_out = next_crit; |
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634 save_output = false; |
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635 i_crit++; |
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636 do_restart = true; |
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637 } |
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638 else |
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639 { |
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640 clear_stop_time (); |
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641 t_out = next_out; |
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642 save_output = true; |
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643 i_out++; |
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644 } |
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645 } |
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646 else |
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647 { |
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648 set_stop_time (next_crit); |
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649 t_out = next_out; |
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650 save_output = true; |
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651 i_out++; |
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652 } |
3912 | 653 |
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654 ColumnVector x_next = do_integrate (t_out); |
3912 | 655 |
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656 if (integration_error) |
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657 return retval; |
3912 | 658 |
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659 if (save_output) |
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660 { |
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661 for (octave_idx_type i = 0; i < n; i++) |
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662 { |
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663 retval.elem (i_out-1, i) = x_next.elem (i); |
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664 xdot_out.elem (i_out-1, i) = xdot.elem (i); |
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665 } |
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666 } |
3912 | 667 |
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668 if (do_restart) |
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669 force_restart (); |
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670 } |
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671 } |
3912 | 672 else |
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673 { |
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674 retval = integrate (tout, xdot_out); |
3912 | 675 |
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676 if (integration_error) |
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677 return retval; |
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678 } |
3912 | 679 } |
680 | |
681 return retval; | |
682 } | |
683 | |
3995 | 684 std::string |
685 DASPK::error_message (void) const | |
686 { | |
687 std::string retval; | |
688 | |
5765 | 689 std::ostringstream buf; |
690 buf << t; | |
691 std::string t_curr = buf.str (); | |
4043 | 692 |
3997 | 693 switch (istate) |
3995 | 694 { |
3996 | 695 case 1: |
696 retval = "a step was successfully taken in intermediate-output mode."; | |
697 break; | |
698 | |
699 case 2: | |
700 retval = "integration completed by stepping exactly to TOUT"; | |
701 break; | |
702 | |
703 case 3: | |
704 retval = "integration to tout completed by stepping past TOUT"; | |
705 break; | |
706 | |
707 case 4: | |
708 retval = "initial condition calculation completed successfully"; | |
709 break; | |
710 | |
711 case -1: | |
4043 | 712 retval = std::string ("a large amount of work has been expended (t =") |
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713 + t_curr + ")"; |
3996 | 714 break; |
715 | |
716 case -2: | |
717 retval = "the error tolerances are too stringent"; | |
718 break; | |
719 | |
720 case -3: | |
4043 | 721 retval = std::string ("error weight became zero during problem. (t = ") |
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722 + t_curr |
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723 + "; solution component i vanished, and atol or atol(i) == 0)"; |
3996 | 724 break; |
725 | |
726 case -6: | |
4043 | 727 retval = std::string ("repeated error test failures on the last attempted step (t = ") |
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728 + t_curr + ")"; |
3996 | 729 break; |
730 | |
731 case -7: | |
4043 | 732 retval = std::string ("the corrector could not converge (t = ") |
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733 + t_curr + ")"; |
3996 | 734 break; |
735 | |
736 case -8: | |
4043 | 737 retval = std::string ("the matrix of partial derivatives is singular (t = ") |
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738 + t_curr + ")"; |
3996 | 739 break; |
740 | |
741 case -9: | |
4043 | 742 retval = std::string ("the corrector could not converge (t = ") |
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743 + t_curr + "; repeated test failures)"; |
3996 | 744 break; |
745 | |
746 case -10: | |
4043 | 747 retval = std::string ("corrector could not converge because IRES was -1 (t = ") |
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748 + t_curr + ")"; |
3996 | 749 break; |
750 | |
751 case -11: | |
4043 | 752 retval = std::string ("return requested in user-supplied function (t = ") |
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753 + t_curr + ")"; |
3996 | 754 break; |
755 | |
756 case -12: | |
757 retval = "failed to compute consistent initial conditions"; | |
758 break; | |
759 | |
760 case -13: | |
4043 | 761 retval = std::string ("unrecoverable error encountered inside user's PSOL function (t = ") |
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762 + t_curr + ")"; |
3996 | 763 break; |
764 | |
765 case -14: | |
4043 | 766 retval = std::string ("the Krylov linear system solver failed to converge (t = ") |
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767 + t_curr + ")"; |
3996 | 768 break; |
769 | |
770 case -33: | |
771 retval = "unrecoverable error (see printed message)"; | |
772 break; | |
773 | |
3995 | 774 default: |
775 retval = "unknown error state"; | |
776 break; | |
777 } | |
778 | |
779 return retval; | |
780 } |