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/* ode-initval/control.c
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*
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* Copyright (C) 1996, 1997, 1998, 1999, 2000 Gerard Jungman
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or (at
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* your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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/* Author: G. Jungman */
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#include <config.h>
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#include <stdlib.h>
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#include <gsl/gsl_math.h>
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#include <gsl/gsl_errno.h>
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#include <gsl/gsl_odeiv2.h>
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gsl_odeiv2_control *
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gsl_odeiv2_control_alloc (const gsl_odeiv2_control_type * T)
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{
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gsl_odeiv2_control *c =
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(gsl_odeiv2_control *) malloc (sizeof (gsl_odeiv2_control));
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if (c == 0)
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{
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GSL_ERROR_NULL ("failed to allocate space for control struct",
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GSL_ENOMEM);
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};
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c->type = T;
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c->state = c->type->alloc ();
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if (c->state == 0)
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{
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free (c); /* exception in constructor, avoid memory leak */
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GSL_ERROR_NULL ("failed to allocate space for control state",
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GSL_ENOMEM);
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};
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return c;
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}
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int
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gsl_odeiv2_control_init (gsl_odeiv2_control * c,
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double eps_abs, double eps_rel,
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double a_y, double a_dydt)
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{
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return c->type->init (c->state, eps_abs, eps_rel, a_y, a_dydt);
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}
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void
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gsl_odeiv2_control_free (gsl_odeiv2_control * c)
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{
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RETURN_IF_NULL (c);
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c->type->free (c->state);
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free (c);
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}
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const char *
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gsl_odeiv2_control_name (const gsl_odeiv2_control * c)
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{
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return c->type->name;
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}
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int
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gsl_odeiv2_control_hadjust (gsl_odeiv2_control * c, gsl_odeiv2_step * s,
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const double y[], const double yerr[],
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const double dydt[], double *h)
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{
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return c->type->hadjust (c->state, s->dimension, s->type->order (s->state),
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y, yerr, dydt, h);
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}
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int
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gsl_odeiv2_control_errlevel (gsl_odeiv2_control * c, const double y,
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const double dydt, const double h,
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const size_t ind, double *errlev)
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{
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return c->type->errlevel (c->state, y, dydt, h, ind, errlev);
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}
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int
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gsl_odeiv2_control_set_driver (gsl_odeiv2_control * c,
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const gsl_odeiv2_driver * d)
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{
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if (d != NULL)
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{
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c->type->set_driver (c->state, d);
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}
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else
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{
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GSL_ERROR_NULL ("driver pointer is null", GSL_EFAULT);
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}
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return GSL_SUCCESS;
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}
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