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authorAlberto Ruiz <aruiz@um.es>2012-03-21 19:42:44 +0100
committerAlberto Ruiz <aruiz@um.es>2012-03-21 19:42:44 +0100
commitd109c791aef6dbb6a15fb65efe5c42121728aed0 (patch)
tree1a43ebdaea2a25f6c26b1fa25bac41c4516c103a /lib/Numeric/GSL/gsl-aux.c
parent354d599b56d7bfb2124eb6939d4d87e9efa3faed (diff)
fall back to old ode if v2 not available
Diffstat (limited to 'lib/Numeric/GSL/gsl-aux.c')
-rw-r--r--lib/Numeric/GSL/gsl-aux.c87
1 files changed, 2 insertions, 85 deletions
diff --git a/lib/Numeric/GSL/gsl-aux.c b/lib/Numeric/GSL/gsl-aux.c
index 7f1cf68..fc14ff5 100644
--- a/lib/Numeric/GSL/gsl-aux.c
+++ b/lib/Numeric/GSL/gsl-aux.c
@@ -32,7 +32,6 @@
32#include <gsl/gsl_complex_math.h> 32#include <gsl/gsl_complex_math.h>
33#include <gsl/gsl_rng.h> 33#include <gsl/gsl_rng.h>
34#include <gsl/gsl_randist.h> 34#include <gsl/gsl_randist.h>
35#include <gsl/gsl_odeiv2.h>
36#include <gsl/gsl_multifit_nlin.h> 35#include <gsl/gsl_multifit_nlin.h>
37#include <string.h> 36#include <string.h>
38#include <stdio.h> 37#include <stdio.h>
@@ -1331,89 +1330,7 @@ int random_vector(int seed, int code, RVEC(r)) {
1331#undef RAN 1330#undef RAN
1332 1331
1333////////////////////////////////////////////////////// 1332//////////////////////////////////////////////////////
1334// ODE
1335 1333
1336typedef struct {int n; int (*f)(double,int, const double*, int, double *); int (*j)(double,int, const double*, int, int, double*);} Tode; 1334#include "gsl-ode.c"
1337
1338int odefunc (double t, const double y[], double f[], void *params) {
1339 Tode * P = (Tode*) params;
1340 (P->f)(t,P->n,y,P->n,f);
1341 return GSL_SUCCESS;
1342}
1343
1344int odejac (double t, const double y[], double *dfdy, double dfdt[], void *params) {
1345 Tode * P = ((Tode*) params);
1346 (P->j)(t,P->n,y,P->n,P->n,dfdy);
1347 int j;
1348 for (j=0; j< P->n; j++)
1349 dfdt[j] = 0.0;
1350 return GSL_SUCCESS;
1351}
1352
1353
1354int ode(int method, double h, double eps_abs, double eps_rel,
1355 int f(double, int, const double*, int, double*),
1356 int jac(double, int, const double*, int, int, double*),
1357 KRVEC(xi), KRVEC(ts), RMAT(sol)) {
1358
1359 const gsl_odeiv2_step_type * T;
1360
1361 switch(method) {
1362 case 0 : {T = gsl_odeiv2_step_rk2; break; }
1363 case 1 : {T = gsl_odeiv2_step_rk4; break; }
1364 case 2 : {T = gsl_odeiv2_step_rkf45; break; }
1365 case 3 : {T = gsl_odeiv2_step_rkck; break; }
1366 case 4 : {T = gsl_odeiv2_step_rk8pd; break; }
1367 case 5 : {T = gsl_odeiv2_step_rk2imp; break; }
1368 case 6 : {T = gsl_odeiv2_step_rk4imp; break; }
1369 case 7 : {T = gsl_odeiv2_step_bsimp; break; }
1370 case 8 : {T = gsl_odeiv2_step_rk1imp; break; }
1371 case 9 : {T = gsl_odeiv2_step_msadams; break; }
1372 case 10: {T = gsl_odeiv2_step_msbdf; break; }
1373 default: ERROR(BAD_CODE);
1374 }
1375
1376 Tode P;
1377 P.f = f;
1378 P.j = jac;
1379 P.n = xin;
1380
1381 gsl_odeiv2_system sys = {odefunc, odejac, xin, &P};
1382
1383 gsl_odeiv2_driver * d =
1384 gsl_odeiv2_driver_alloc_y_new (&sys, T, h, eps_abs, eps_rel);
1385
1386 double t = tsp[0];
1387
1388 double* y = (double*)calloc(xin,sizeof(double));
1389 int i,j;
1390 int status;
1391 for(i=0; i< xin; i++) {
1392 y[i] = xip[i];
1393 solp[i] = xip[i];
1394 }
1395
1396 for (i = 1; i < tsn ; i++)
1397 {
1398 double ti = tsp[i];
1399
1400 status = gsl_odeiv2_driver_apply (d, &t, ti, y);
1401
1402 if (status != GSL_SUCCESS) {
1403 printf ("error in ode, return value=%d\n", status);
1404 break;
1405 }
1406
1407// printf ("%.5e %.5e %.5e\n", t, y[0], y[1]);
1408
1409 for(j=0; j<xin; j++) {
1410 solp[i*xin + j] = y[j];
1411 }
1412 }
1413
1414 free(y);
1415 gsl_odeiv2_driver_free (d);
1416
1417 return status;
1418}
1419 1335
1336//////////////////////////////////////////////////////