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// Copyright (C) 2016 - IIT Bombay - FOSSEE
//
// This file must be used under the terms of the CeCILL.
// This source file is licensed as described in the file COPYING, which
// you should have received as part of this distribution. The terms
// are also available at
// http://www.cecill.info/licences/Licence_CeCILL_V2-en.txt
// Author: Siddhesh Wani
// Organization: FOSSEE, IIT Bombay
// Email: toolbox@scilab.in
#include "ode.h"
#include "types.h"
#include <gsl/gsl_errno.h>
#include <gsl/gsl_matrix.h>
#include <gsl/gsl_odeiv2.h>
void doded(double *initial_value, double start_time, double end_time, \
char *ode_function, double nequs, double eps_abs, double eps_rel, \
double step_size, double *out)
{
double t = start_time;
//Setup ODE related parameters
gsl_odeiv2_system sys = {ode_function, NULL, 2, NULL};
gsl_odeiv2_step *s = gsl_odeiv2_step_alloc (gsl_odeiv2_step_rkf45, nequs);
gsl_odeiv2_control *c = gsl_odeiv2_control_y_new (eps_abs, eps_rel);
gsl_odeiv2_evolve *e = gsl_odeiv2_evolve_alloc (nequs);
while(t < end_time)
{
gsl_odeiv2_evolve_apply_fixed_step (e, c, s, &sys, &t, step_size, &out);
}
gsl_odeiv2_evolve_free (e);
gsl_odeiv2_control_free (c);
gsl_odeiv2_step_free (s);
}
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