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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., 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);
}
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