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Annotation of OpenXM/src/hgm/gsl-t-1/src/t-step.c, Revision 1.1

1.1     ! takayama    1: /* ode-initval/odeiv.c
        !             2:  *
        !             3:  * Copyright (C) 1996, 1997, 1998, 1999, 2000 Gerard Jungman
        !             4:  *
        !             5:  * This program is free software; you can redistribute it and/or modify
        !             6:  * it under the terms of the GNU General Public License as published by
        !             7:  * the Free Software Foundation; either version 3 of the License, or (at
        !             8:  * your option) any later version.
        !             9:  *
        !            10:  * This program is distributed in the hope that it will be useful, but
        !            11:  * WITHOUT ANY WARRANTY; without even the implied warranty of
        !            12:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
        !            13:  * General Public License for more details.
        !            14:  *
        !            15:  * You should have received a copy of the GNU General Public License
        !            16:  * along with this program; if not, write to the Free Software
        !            17:  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
        !            18:  */
        !            19:
        !            20: /* Author:  G. Jungman
        !            21:  */
        !            22: #include "config.h"
        !            23: #include <stdlib.h>
        !            24: #include "t-gsl_errno.h"
        !            25: #include "t-gsl_odeiv.h"
        !            26:
        !            27: gsl_odeiv_step *
        !            28: gsl_odeiv_step_alloc(const gsl_odeiv_step_type * T, size_t dim)
        !            29: {
        !            30:   gsl_odeiv_step *s = (gsl_odeiv_step *) malloc (sizeof (gsl_odeiv_step));
        !            31:
        !            32:   if (s == 0)
        !            33:     {
        !            34:       GSL_ERROR_NULL ("failed to allocate space for ode struct", GSL_ENOMEM);
        !            35:     };
        !            36:
        !            37:   s->type = T;
        !            38:   s->dimension = dim;
        !            39:
        !            40:   s->state = s->type->alloc(dim);
        !            41:
        !            42:   if (s->state == 0)
        !            43:     {
        !            44:       free (s);         /* exception in constructor, avoid memory leak */
        !            45:
        !            46:       GSL_ERROR_NULL ("failed to allocate space for ode state", GSL_ENOMEM);
        !            47:     };
        !            48:
        !            49:   return s;
        !            50: }
        !            51:
        !            52: const char *
        !            53: gsl_odeiv_step_name(const gsl_odeiv_step * s)
        !            54: {
        !            55:   return s->type->name;
        !            56: }
        !            57:
        !            58: unsigned int
        !            59: gsl_odeiv_step_order(const gsl_odeiv_step * s)
        !            60: {
        !            61:   return s->type->order(s->state);
        !            62: }
        !            63:
        !            64: int
        !            65: gsl_odeiv_step_apply(
        !            66:   gsl_odeiv_step * s,
        !            67:   double t,
        !            68:   double h,
        !            69:   double y[],
        !            70:   double yerr[],
        !            71:   const double dydt_in[],
        !            72:   double dydt_out[],
        !            73:   const gsl_odeiv_system * dydt)
        !            74: {
        !            75:   return s->type->apply(s->state, s->dimension, t, h, y, yerr, dydt_in, dydt_out, dydt);
        !            76: }
        !            77:
        !            78: int
        !            79: gsl_odeiv_step_reset(gsl_odeiv_step * s)
        !            80: {
        !            81:   return s->type->reset(s->state, s->dimension);
        !            82: }
        !            83:
        !            84: void
        !            85: gsl_odeiv_step_free(gsl_odeiv_step * s)
        !            86: {
        !            87:   RETURN_IF_NULL (s);
        !            88:   s->type->free(s->state);
        !            89:   free(s);
        !            90: }