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- /* ode-initval/odeiv.c
- *
- * Copyright (C) 1996, 1997, 1998, 1999, 2000 Gerard Jungman
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or (at
- * your option) any later version.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
- /* Author: G. Jungman
- */
- #include <config.h>
- #include <stdlib.h>
- #include <gsl/gsl_errno.h>
- #include <gsl/gsl_odeiv.h>
-
- gsl_odeiv_step *
- gsl_odeiv_step_alloc(const gsl_odeiv_step_type * T, size_t dim)
- {
- gsl_odeiv_step *s = (gsl_odeiv_step *) malloc (sizeof (gsl_odeiv_step));
-
- if (s == 0)
- {
- GSL_ERROR_NULL ("failed to allocate space for ode struct", GSL_ENOMEM);
- };
-
- s->type = T;
- s->dimension = dim;
-
- s->state = s->type->alloc(dim);
-
- if (s->state == 0)
- {
- free (s); /* exception in constructor, avoid memory leak */
-
- GSL_ERROR_NULL ("failed to allocate space for ode state", GSL_ENOMEM);
- };
-
- return s;
- }
-
- const char *
- gsl_odeiv_step_name(const gsl_odeiv_step * s)
- {
- return s->type->name;
- }
-
- unsigned int
- gsl_odeiv_step_order(const gsl_odeiv_step * s)
- {
- return s->type->order(s->state);
- }
-
- int
- gsl_odeiv_step_apply(
- gsl_odeiv_step * s,
- double t,
- double h,
- double y[],
- double yerr[],
- const double dydt_in[],
- double dydt_out[],
- const gsl_odeiv_system * dydt)
- {
- return s->type->apply(s->state, s->dimension, t, h, y, yerr, dydt_in, dydt_out, dydt);
- }
-
- int
- gsl_odeiv_step_reset(gsl_odeiv_step * s)
- {
- return s->type->reset(s->state, s->dimension);
- }
-
- void
- gsl_odeiv_step_free(gsl_odeiv_step * s)
- {
- s->type->free(s->state);
- free(s);
- }
-