diff options
Diffstat (limited to 'src/c/differential_calculus')
| -rw-r--r-- | src/c/differential_calculus/includes/ode.h | 28 | ||||
| -rw-r--r-- | src/c/differential_calculus/interfaces/int_ode.h | 27 | ||||
| -rw-r--r-- | src/c/differential_calculus/ode/doded.c | 39 | ||||
| -rw-r--r-- | src/c/differential_calculus/ode/dodes.c | 36 | ||||
| -rw-r--r-- | src/c/differential_calculus/ode/ode.c | 26 |
5 files changed, 120 insertions, 36 deletions
diff --git a/src/c/differential_calculus/includes/ode.h b/src/c/differential_calculus/includes/ode.h index 46220a8..f08909c 100644 --- a/src/c/differential_calculus/includes/ode.h +++ b/src/c/differential_calculus/includes/ode.h @@ -1,9 +1,23 @@ -// FOSSEE IIT Bombay -#ifdef __INT_ODE_H__ -#define __INT_ODE_H__ +// 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 -double ODE(double initial_value, double start_time, double end_time, \ - char *ode_function, double nequs, double eps_abs, double eps_rel \ - double step_size) +#ifndef __ODE_H__ +#define __ODE_H__ -#endif /*__INT_ODE_H__*/
\ No newline at end of file +double dodes(double initial_value, double start_time, double end_time, \ + char *ode_function, double nequs, double eps_abs, double eps_rel, \ + double step_size); + +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); + +#endif /*__ODE_H__*/
\ No newline at end of file diff --git a/src/c/differential_calculus/interfaces/int_ode.h b/src/c/differential_calculus/interfaces/int_ode.h index 5000ed5..a27acba 100644 --- a/src/c/differential_calculus/interfaces/int_ode.h +++ b/src/c/differential_calculus/interfaces/int_ode.h @@ -1,9 +1,30 @@ -// FOSSEE IIT Bombay +// 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 -#ifdef __INT_ODE_H__ +#ifndef __INT_ODE_H__ #define __INT_ODE_H__ -#define d0d0d0g2ODEd0(in1, in2, in3, in4) ODE(in1, in2, in3, in4, 1, 1.0e-2,\ +#ifdef __cplusplus +extern "C" { +#endif + +#define d0d0d0g2oded0(in1, in2, in3, in4) dodes(in1, in2, in3, in4, 1, 1.0e-2,\ 1.0e-2, 1.0e-6) +#define d2d0d0g2oded2(in1, size1, in2, in3, func_name, strsize, out) doded(in1, in2, in3, func_name \ + 1, 1.0e-2, 1.0e-2, 1.0e-6, out) + +#ifdef __cplusplus +} /* extern "C" */ +#endif + + #endif /*__INT_ODE_H__*/
\ No newline at end of file diff --git a/src/c/differential_calculus/ode/doded.c b/src/c/differential_calculus/ode/doded.c new file mode 100644 index 0000000..b544c42 --- /dev/null +++ b/src/c/differential_calculus/ode/doded.c @@ -0,0 +1,39 @@ +// 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); +} diff --git a/src/c/differential_calculus/ode/dodes.c b/src/c/differential_calculus/ode/dodes.c new file mode 100644 index 0000000..ee6718b --- /dev/null +++ b/src/c/differential_calculus/ode/dodes.c @@ -0,0 +1,36 @@ +// 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> + + +double dodes(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 = 0; + //int status; + //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); + + gsl_odeiv2_evolve_apply_fixed_step (e, c, s, &sys, &start_time, step_size, &out); + + return out; + +} diff --git a/src/c/differential_calculus/ode/ode.c b/src/c/differential_calculus/ode/ode.c deleted file mode 100644 index b815e36..0000000 --- a/src/c/differential_calculus/ode/ode.c +++ /dev/null @@ -1,26 +0,0 @@ -// FOSSEE IIT Bombay - -#include "ODE.h" -#include "types.h" - - -double ODE(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 = 0; - int status; - //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); - - status = gsl_odeiv2_evolve_apply_fixed_step (e, c, s, &sys, &t, stepsize, x_dot); - - if (status == GSL_SUCCESS) { - return out; - } - else return 0; -} |