| /* 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, 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); |
| } |