1 files changed, 26 insertions, 0 deletions
diff --git a/src/c/differential_calculus/ode/ode.c b/src/c/differential_calculus/ode/ode.c
new file mode 100644
index 0000000..b815e36
--- /dev/null
+++ b/src/c/differential_calculus/ode/ode.c
@@ -0,0 +1,26 @@
+// 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;
+}