Mercurial > hg > octave-lyh
annotate liboctave/DASRT.cc @ 10493:2f8bacc2a57d
fix order of func defs in Sparse.cc
author | Jaroslav Hajek <highegg@gmail.com> |
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date | Wed, 07 Apr 2010 12:07:06 +0200 |
parents | 12884915a8e4 |
children | 8a5e980da6aa |
rev | line source |
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3990 | 1 /* |
2 | |
8920 | 3 Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007, 2008 John W. Eaton |
3990 | 4 |
5 This file is part of Octave. | |
6 | |
7 Octave is free software; you can redistribute it and/or modify it | |
8 under the terms of the GNU General Public License as published by the | |
7016 | 9 Free Software Foundation; either version 3 of the License, or (at your |
10 option) any later version. | |
3990 | 11 |
12 Octave is distributed in the hope that it will be useful, but WITHOUT | |
13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
15 for more details. | |
16 | |
17 You should have received a copy of the GNU General Public License | |
7016 | 18 along with Octave; see the file COPYING. If not, see |
19 <http://www.gnu.org/licenses/>. | |
3990 | 20 |
21 */ | |
22 | |
23 #ifdef HAVE_CONFIG_H | |
24 #include <config.h> | |
25 #endif | |
26 | |
27 #include <cfloat> | |
28 | |
5765 | 29 #include <sstream> |
30 | |
3990 | 31 #include "DASRT.h" |
32 #include "f77-fcn.h" | |
33 #include "lo-error.h" | |
7231 | 34 #include "lo-math.h" |
4180 | 35 #include "quit.h" |
3990 | 36 |
5275 | 37 typedef octave_idx_type (*dasrt_fcn_ptr) (const double&, const double*, const double*, |
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38 double*, octave_idx_type&, double*, octave_idx_type*); |
3991 | 39 |
5275 | 40 typedef octave_idx_type (*dasrt_jac_ptr) (const double&, const double*, const double*, |
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41 double*, const double&, double*, octave_idx_type*); |
3991 | 42 |
5275 | 43 typedef octave_idx_type (*dasrt_constr_ptr) (const octave_idx_type&, const double&, const double*, |
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44 const octave_idx_type&, double*, double*, octave_idx_type*); |
3991 | 45 |
3990 | 46 extern "C" |
4552 | 47 { |
48 F77_RET_T | |
5275 | 49 F77_FUNC (ddasrt, DDASRT) (dasrt_fcn_ptr, const octave_idx_type&, double&, |
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50 double*, double*, const double&, octave_idx_type*, |
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51 const double*, const double*, octave_idx_type&, double*, |
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52 const octave_idx_type&, octave_idx_type*, const octave_idx_type&, double*, |
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53 octave_idx_type*, dasrt_jac_ptr, dasrt_constr_ptr, |
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54 const octave_idx_type&, octave_idx_type*); |
4552 | 55 } |
3990 | 56 |
57 static DAEFunc::DAERHSFunc user_fsub; | |
58 static DAEFunc::DAEJacFunc user_jsub; | |
59 static DAERTFunc::DAERTConstrFunc user_csub; | |
3993 | 60 |
5275 | 61 static octave_idx_type nn; |
3990 | 62 |
5275 | 63 static octave_idx_type |
3991 | 64 ddasrt_f (const double& t, const double *state, const double *deriv, |
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65 double *delta, octave_idx_type& ires, double *, octave_idx_type *) |
3990 | 66 { |
4180 | 67 BEGIN_INTERRUPT_WITH_EXCEPTIONS; |
68 | |
3990 | 69 ColumnVector tmp_state (nn); |
4133 | 70 ColumnVector tmp_deriv (nn); |
3990 | 71 |
5275 | 72 for (octave_idx_type i = 0; i < nn; i++) |
4133 | 73 { |
74 tmp_state(i) = state[i]; | |
75 tmp_deriv(i) = deriv[i]; | |
76 } | |
3990 | 77 |
3994 | 78 ColumnVector tmp_fval = (*user_fsub) (tmp_state, tmp_deriv, t, ires); |
3990 | 79 |
80 if (tmp_fval.length () == 0) | |
81 ires = -2; | |
82 else | |
83 { | |
5275 | 84 for (octave_idx_type i = 0; i < nn; i++) |
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85 delta[i] = tmp_fval(i); |
3990 | 86 } |
87 | |
4180 | 88 END_INTERRUPT_WITH_EXCEPTIONS; |
89 | |
3990 | 90 return 0; |
91 } | |
92 | |
5275 | 93 octave_idx_type |
3991 | 94 ddasrt_j (const double& time, const double *state, const double *deriv, |
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95 double *pd, const double& cj, double *, octave_idx_type *) |
3990 | 96 { |
4180 | 97 BEGIN_INTERRUPT_WITH_EXCEPTIONS; |
98 | |
5775 | 99 // FIXME -- would be nice to avoid copying the data. |
3990 | 100 |
3991 | 101 ColumnVector tmp_state (nn); |
102 ColumnVector tmp_deriv (nn); | |
3990 | 103 |
5275 | 104 for (octave_idx_type i = 0; i < nn; i++) |
3991 | 105 { |
106 tmp_deriv.elem (i) = deriv [i]; | |
107 tmp_state.elem (i) = state [i]; | |
108 } | |
3990 | 109 |
3994 | 110 Matrix tmp_pd = (*user_jsub) (tmp_state, tmp_deriv, time, cj); |
3990 | 111 |
5275 | 112 for (octave_idx_type j = 0; j < nn; j++) |
113 for (octave_idx_type i = 0; i < nn; i++) | |
3991 | 114 pd [nn * j + i] = tmp_pd.elem (i, j); |
3990 | 115 |
4180 | 116 END_INTERRUPT_WITH_EXCEPTIONS; |
117 | |
3990 | 118 return 0; |
119 } | |
120 | |
5275 | 121 static octave_idx_type |
122 ddasrt_g (const octave_idx_type& neq, const double& t, const double *state, | |
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123 const octave_idx_type& ng, double *gout, double *, octave_idx_type *) |
3990 | 124 { |
4180 | 125 BEGIN_INTERRUPT_WITH_EXCEPTIONS; |
126 | |
5275 | 127 octave_idx_type n = neq; |
3990 | 128 |
129 ColumnVector tmp_state (n); | |
5275 | 130 for (octave_idx_type i = 0; i < n; i++) |
3990 | 131 tmp_state(i) = state[i]; |
132 | |
3994 | 133 ColumnVector tmp_fval = (*user_csub) (tmp_state, t); |
3990 | 134 |
5275 | 135 for (octave_idx_type i = 0; i < ng; i++) |
3990 | 136 gout[i] = tmp_fval(i); |
137 | |
4180 | 138 END_INTERRUPT_WITH_EXCEPTIONS; |
139 | |
3990 | 140 return 0; |
141 } | |
142 | |
143 void | |
144 DASRT::integrate (double tout) | |
145 { | |
146 DASRT_result retval; | |
147 | |
4049 | 148 // I suppose this is the safe thing to do. If this is the first |
149 // call, or if anything about the problem has changed, we should | |
150 // start completely fresh. | |
151 | |
152 if (! initialized || restart | |
153 || DAEFunc::reset || DAERTFunc::reset || DASRT_options::reset) | |
3990 | 154 { |
155 integration_error = false; | |
156 | |
4049 | 157 initialized = true; |
158 | |
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159 info.resize (15, 1); |
4049 | 160 |
5275 | 161 for (octave_idx_type i = 0; i < 15; i++) |
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162 info(i) = 0; |
4049 | 163 |
164 pinfo = info.fortran_vec (); | |
165 | |
5275 | 166 octave_idx_type n = size (); |
4049 | 167 |
168 nn = n; | |
3990 | 169 |
4133 | 170 // DAERTFunc |
171 | |
172 user_csub = DAERTFunc::constraint_function (); | |
173 | |
174 if (user_csub) | |
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175 { |
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176 ColumnVector tmp = (*user_csub) (x, t); |
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177 ng = tmp.length (); |
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178 } |
4133 | 179 else |
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180 ng = 0; |
4133 | 181 |
5275 | 182 octave_idx_type maxord = maximum_order (); |
4133 | 183 if (maxord >= 0) |
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184 { |
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185 if (maxord > 0 && maxord < 6) |
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186 { |
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187 info(8) = 1; |
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188 iwork(2) = maxord; |
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189 } |
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190 else |
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191 { |
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192 (*current_liboctave_error_handler) |
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193 ("dassl: invalid value for maximum order"); |
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194 integration_error = true; |
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195 return; |
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196 } |
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197 } |
4133 | 198 |
4428 | 199 liw = 21 + n; |
4133 | 200 lrw = 50 + 9*n + n*n + 3*ng; |
4049 | 201 |
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202 iwork.resize (liw, 1); |
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203 rwork.resize (lrw, 1); |
4049 | 204 |
205 info(0) = 0; | |
206 | |
207 if (stop_time_set) | |
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208 { |
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209 info(3) = 1; |
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210 rwork(0) = stop_time; |
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211 } |
3990 | 212 else |
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213 info(3) = 0; |
3990 | 214 |
3994 | 215 px = x.fortran_vec (); |
216 pxdot = xdot.fortran_vec (); | |
217 | |
4049 | 218 piwork = iwork.fortran_vec (); |
219 prwork = rwork.fortran_vec (); | |
220 | |
221 restart = false; | |
3994 | 222 |
4049 | 223 // DAEFunc |
224 | |
225 user_fsub = DAEFunc::function (); | |
226 user_jsub = DAEFunc::jacobian_function (); | |
227 | |
228 if (user_fsub) | |
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229 { |
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230 octave_idx_type ires = 0; |
3990 | 231 |
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232 ColumnVector fval = (*user_fsub) (x, xdot, t, ires); |
3990 | 233 |
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234 if (fval.length () != x.length ()) |
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235 { |
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236 (*current_liboctave_error_handler) |
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237 ("dasrt: inconsistent sizes for state and residual vectors"); |
3990 | 238 |
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239 integration_error = true; |
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240 return; |
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241 } |
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242 } |
4049 | 243 else |
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244 { |
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245 (*current_liboctave_error_handler) |
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246 ("dasrt: no user supplied RHS subroutine!"); |
3990 | 247 |
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248 integration_error = true; |
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249 return; |
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250 } |
4049 | 251 |
252 info(4) = user_jsub ? 1 : 0; | |
253 | |
254 DAEFunc::reset = false; | |
255 | |
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256 jroot.resize (ng, 1, 1); |
4049 | 257 |
258 pjroot = jroot.fortran_vec (); | |
259 | |
260 DAERTFunc::reset = false; | |
261 | |
262 // DASRT_options | |
263 | |
4050 | 264 double mss = maximum_step_size (); |
265 if (mss >= 0.0) | |
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266 { |
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267 rwork(1) = mss; |
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268 info(6) = 1; |
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269 } |
4049 | 270 else |
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271 info(6) = 0; |
3990 | 272 |
4050 | 273 double iss = initial_step_size (); |
274 if (iss >= 0.0) | |
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275 { |
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276 rwork(2) = iss; |
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277 info(7) = 1; |
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278 } |
4049 | 279 else |
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280 info(7) = 0; |
4049 | 281 |
282 if (step_limit () >= 0) | |
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283 { |
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284 info(11) = 1; |
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285 iwork(20) = step_limit (); |
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286 } |
4049 | 287 else |
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288 info(11) = 0; |
3990 | 289 |
290 abs_tol = absolute_tolerance (); | |
291 rel_tol = relative_tolerance (); | |
292 | |
5275 | 293 octave_idx_type abs_tol_len = abs_tol.length (); |
294 octave_idx_type rel_tol_len = rel_tol.length (); | |
3998 | 295 |
296 if (abs_tol_len == 1 && rel_tol_len == 1) | |
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297 { |
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298 info.elem (1) = 0; |
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299 } |
3998 | 300 else if (abs_tol_len == n && rel_tol_len == n) |
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301 { |
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302 info.elem (1) = 1; |
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303 } |
3998 | 304 else |
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305 { |
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306 (*current_liboctave_error_handler) |
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307 ("dasrt: inconsistent sizes for tolerance arrays"); |
3998 | 308 |
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309 integration_error = true; |
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310 return; |
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311 } |
3998 | 312 |
313 pabs_tol = abs_tol.fortran_vec (); | |
314 prel_tol = rel_tol.fortran_vec (); | |
3990 | 315 |
4049 | 316 DASRT_options::reset = false; |
3990 | 317 } |
318 | |
4049 | 319 static double *dummy = 0; |
5275 | 320 static octave_idx_type *idummy = 0; |
3990 | 321 |
4575 | 322 F77_XFCN (ddasrt, DDASRT, (ddasrt_f, nn, t, px, pxdot, tout, pinfo, |
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323 prel_tol, pabs_tol, istate, prwork, lrw, |
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324 piwork, liw, dummy, idummy, ddasrt_j, |
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325 ddasrt_g, ng, pjroot)); |
3990 | 326 |
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327 switch (istate) |
3990 | 328 { |
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329 case 1: // A step was successfully taken in intermediate-output |
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330 // mode. The code has not yet reached TOUT. |
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331 case 2: // The integration to TOUT was successfully completed |
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332 // (T=TOUT) by stepping exactly to TOUT. |
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333 case 3: // The integration to TOUT was successfully completed |
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334 // (T=TOUT) by stepping past TOUT. Y(*) is obtained by |
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335 // interpolation. YPRIME(*) is obtained by interpolation. |
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336 t = tout; |
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337 break; |
3990 | 338 |
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339 case 4: // The integration was successfully completed |
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340 // by finding one or more roots of G at T. |
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341 break; |
3990 | 342 |
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343 case -1: // A large amount of work has been expended. |
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344 case -2: // The error tolerances are too stringent. |
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345 case -3: // The local error test cannot be satisfied because you |
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346 // specified a zero component in ATOL and the |
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347 // corresponding computed solution component is zero. |
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348 // Thus, a pure relative error test is impossible for |
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349 // this component. |
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350 case -6: // DDASRT had repeated error test failures on the last |
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351 // attempted step. |
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352 case -7: // The corrector could not converge. |
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353 case -8: // The matrix of partial derivatives is singular. |
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354 case -9: // The corrector could not converge. There were repeated |
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355 // error test failures in this step. |
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356 case -10: // The corrector could not converge because IRES was |
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357 // equal to minus one. |
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358 case -11: // IRES equal to -2 was encountered and control is being |
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359 // returned to the calling program. |
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360 case -12: // DASSL failed to compute the initial YPRIME. |
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361 case -33: // The code has encountered trouble from which it cannot |
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362 // recover. A message is printed explaining the trouble |
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363 // and control is returned to the calling program. For |
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364 // example, this occurs when invalid input is detected. |
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365 integration_error = true; |
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366 break; |
3996 | 367 |
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368 default: |
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369 integration_error = true; |
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370 (*current_liboctave_error_handler) |
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371 ("unrecognized value of istate (= %d) returned from ddasrt", |
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372 istate); |
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373 break; |
3990 | 374 } |
375 } | |
376 | |
377 DASRT_result | |
378 DASRT::integrate (const ColumnVector& tout) | |
379 { | |
380 DASRT_result retval; | |
381 | |
382 Matrix x_out; | |
383 Matrix xdot_out; | |
3994 | 384 ColumnVector t_out = tout; |
3990 | 385 |
5275 | 386 octave_idx_type n_out = tout.capacity (); |
387 octave_idx_type n = size (); | |
3990 | 388 |
389 if (n_out > 0 && n > 0) | |
390 { | |
391 x_out.resize (n_out, n); | |
392 xdot_out.resize (n_out, n); | |
393 | |
5275 | 394 for (octave_idx_type i = 0; i < n; i++) |
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395 { |
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396 x_out(0,i) = x(i); |
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397 xdot_out(0,i) = xdot(i); |
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398 } |
3994 | 399 |
5275 | 400 for (octave_idx_type j = 1; j < n_out; j++) |
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401 { |
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402 integrate (tout(j)); |
3994 | 403 |
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404 if (integration_error) |
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405 { |
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406 retval = DASRT_result (x_out, xdot_out, t_out); |
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407 return retval; |
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408 } |
3992 | 409 |
3997 | 410 if (istate == 4) |
3990 | 411 t_out(j) = t; |
412 else | |
413 t_out(j) = tout(j); | |
414 | |
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415 for (octave_idx_type i = 0; i < n; i++) |
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416 { |
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417 x_out(j,i) = x(i); |
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418 xdot_out(j,i) = xdot(i); |
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419 } |
3992 | 420 |
3997 | 421 if (istate == 4) |
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422 { |
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423 x_out.resize (j+1, n); |
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424 xdot_out.resize (j+1, n); |
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425 t_out.resize (j+1); |
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426 break; |
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427 } |
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428 } |
3990 | 429 } |
430 | |
431 retval = DASRT_result (x_out, xdot_out, t_out); | |
432 | |
433 return retval; | |
434 } | |
435 | |
436 DASRT_result | |
437 DASRT::integrate (const ColumnVector& tout, const ColumnVector& tcrit) | |
438 { | |
439 DASRT_result retval; | |
440 | |
441 Matrix x_out; | |
442 Matrix xdot_out; | |
3994 | 443 ColumnVector t_outs = tout; |
3990 | 444 |
5275 | 445 octave_idx_type n_out = tout.capacity (); |
446 octave_idx_type n = size (); | |
3990 | 447 |
448 if (n_out > 0 && n > 0) | |
449 { | |
450 x_out.resize (n_out, n); | |
451 xdot_out.resize (n_out, n); | |
452 | |
5275 | 453 octave_idx_type n_crit = tcrit.capacity (); |
3990 | 454 |
455 if (n_crit > 0) | |
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456 { |
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457 octave_idx_type i_crit = 0; |
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458 octave_idx_type i_out = 1; |
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459 double next_crit = tcrit(0); |
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460 double next_out; |
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461 while (i_out < n_out) |
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462 { |
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463 bool do_restart = false; |
3990 | 464 |
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465 next_out = tout(i_out); |
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466 if (i_crit < n_crit) |
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467 next_crit = tcrit(i_crit); |
3990 | 468 |
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469 octave_idx_type save_output; |
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470 double t_out; |
3990 | 471 |
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472 if (next_crit == next_out) |
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473 { |
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474 set_stop_time (next_crit); |
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475 t_out = next_out; |
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476 save_output = 1; |
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477 i_out++; |
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478 i_crit++; |
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479 do_restart = true; |
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480 } |
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481 else if (next_crit < next_out) |
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482 { |
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483 if (i_crit < n_crit) |
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484 { |
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485 set_stop_time (next_crit); |
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486 t_out = next_crit; |
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487 save_output = 0; |
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488 i_crit++; |
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489 do_restart = true; |
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490 } |
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491 else |
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492 { |
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493 clear_stop_time (); |
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494 t_out = next_out; |
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495 save_output = 1; |
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496 i_out++; |
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497 } |
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498 } |
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499 else |
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500 { |
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501 set_stop_time (next_crit); |
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502 t_out = next_out; |
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503 save_output = 1; |
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504 i_out++; |
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505 } |
3990 | 506 |
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507 integrate (t_out); |
3990 | 508 |
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509 if (integration_error) |
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510 { |
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511 retval = DASRT_result (x_out, xdot_out, t_outs); |
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512 return retval; |
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513 } |
3992 | 514 |
3997 | 515 if (istate == 4) |
3990 | 516 t_out = t; |
517 | |
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518 if (save_output) |
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519 { |
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520 for (octave_idx_type i = 0; i < n; i++) |
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521 { |
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522 x_out(i_out-1,i) = x(i); |
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523 xdot_out(i_out-1,i) = xdot(i); |
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524 } |
3994 | 525 |
3990 | 526 t_outs(i_out-1) = t_out; |
3994 | 527 |
3997 | 528 if (istate == 4) |
3990 | 529 { |
530 x_out.resize (i_out, n); | |
531 xdot_out.resize (i_out, n); | |
532 t_outs.resize (i_out); | |
533 i_out = n_out; | |
534 } | |
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535 } |
3990 | 536 |
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537 if (do_restart) |
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538 force_restart (); |
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539 } |
3990 | 540 |
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541 retval = DASRT_result (x_out, xdot_out, t_outs); |
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542 } |
3990 | 543 else |
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544 { |
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545 retval = integrate (tout); |
3990 | 546 |
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547 if (integration_error) |
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548 return retval; |
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549 } |
3990 | 550 } |
551 | |
552 return retval; | |
553 } | |
554 | |
3995 | 555 std::string |
556 DASRT::error_message (void) const | |
557 { | |
558 std::string retval; | |
559 | |
5765 | 560 std::ostringstream buf; |
561 buf << t; | |
562 std::string t_curr = buf.str (); | |
4043 | 563 |
3997 | 564 switch (istate) |
3995 | 565 { |
3996 | 566 case 1: |
567 retval = "a step was successfully taken in intermediate-output mode."; | |
568 break; | |
569 | |
570 case 2: | |
571 retval = "integration completed by stepping exactly to TOUT"; | |
572 break; | |
573 | |
574 case 3: | |
575 retval = "integration to tout completed by stepping past TOUT"; | |
576 break; | |
577 | |
578 case 4: | |
579 retval = "integration completed by finding one or more roots of G at T"; | |
580 break; | |
581 | |
582 case -1: | |
4043 | 583 retval = std::string ("a large amount of work has been expended (t =") |
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584 + t_curr + ")"; |
3996 | 585 break; |
586 | |
587 case -2: | |
588 retval = "the error tolerances are too stringent"; | |
589 break; | |
590 | |
591 case -3: | |
4043 | 592 retval = std::string ("error weight became zero during problem. (t = ") |
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593 + t_curr |
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594 + "; solution component i vanished, and atol or atol(i) == 0)"; |
3996 | 595 break; |
596 | |
597 case -6: | |
4043 | 598 retval = std::string ("repeated error test failures on the last attempted step (t = ") |
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599 + t_curr + ")"; |
3996 | 600 break; |
601 | |
602 case -7: | |
4043 | 603 retval = std::string ("the corrector could not converge (t = ") |
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604 + t_curr + ")"; |
3996 | 605 break; |
606 | |
607 case -8: | |
4043 | 608 retval = std::string ("the matrix of partial derivatives is singular (t = ") |
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609 + t_curr + ")"; |
3996 | 610 break; |
611 | |
612 case -9: | |
4043 | 613 retval = std::string ("the corrector could not converge (t = ") |
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614 + t_curr + "; repeated test failures)"; |
3996 | 615 break; |
616 | |
617 case -10: | |
4043 | 618 retval = std::string ("corrector could not converge because IRES was -1 (t = ") |
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619 + t_curr + ")"; |
3996 | 620 break; |
621 | |
622 case -11: | |
4043 | 623 retval = std::string ("return requested in user-supplied function (t = ") |
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624 + t_curr + ")"; |
3996 | 625 break; |
626 | |
627 case -12: | |
628 retval = "failed to compute consistent initial conditions"; | |
629 break; | |
630 | |
631 case -33: | |
632 retval = "unrecoverable error (see printed message)"; | |
633 break; | |
634 | |
3995 | 635 default: |
636 retval = "unknown error state"; | |
637 break; | |
638 } | |
639 | |
640 return retval; | |
641 } |