diff options
Diffstat (limited to 'gsl-1.9/ode-initval/control.c')
-rw-r--r-- | gsl-1.9/ode-initval/control.c | 80 |
1 files changed, 80 insertions, 0 deletions
diff --git a/gsl-1.9/ode-initval/control.c b/gsl-1.9/ode-initval/control.c new file mode 100644 index 0000000..dcbff06 --- /dev/null +++ b/gsl-1.9/ode-initval/control.c @@ -0,0 +1,80 @@ +/* ode-initval/control.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_math.h> +#include <gsl/gsl_errno.h> +#include <gsl/gsl_odeiv.h> + +gsl_odeiv_control * +gsl_odeiv_control_alloc(const gsl_odeiv_control_type * T) +{ + gsl_odeiv_control * c = + (gsl_odeiv_control *) malloc(sizeof(gsl_odeiv_control)); + + if(c == 0) + { + GSL_ERROR_NULL ("failed to allocate space for control struct", + GSL_ENOMEM); + }; + + c->type = T; + c->state = c->type->alloc(); + + if (c->state == 0) + { + free (c); /* exception in constructor, avoid memory leak */ + + GSL_ERROR_NULL ("failed to allocate space for control state", + GSL_ENOMEM); + }; + + return c; +} + +int +gsl_odeiv_control_init(gsl_odeiv_control * c, + double eps_abs, double eps_rel, + double a_y, double a_dydt) +{ + return c->type->init (c->state, eps_abs, eps_rel, a_y, a_dydt); +} + +void +gsl_odeiv_control_free(gsl_odeiv_control * c) +{ + c->type->free(c->state); + free(c); +} + +const char * +gsl_odeiv_control_name(const gsl_odeiv_control * c) +{ + return c->type->name; +} + +int +gsl_odeiv_control_hadjust (gsl_odeiv_control * c, gsl_odeiv_step * s, const double y[], const double yerr[], const double dydt[], double * h) +{ + return c->type->hadjust(c->state, s->dimension, s->type->order(s->state), + y, yerr, dydt, h); +} |