Renamed directory mytools to pipeline_tools

pipeline_tools/gslIntegrate.hpp

@@ -0,0 +1,33 @@
+#ifndef __MYGSL_INTEGRATE_HPP
+#define __MYGSL_INTEGRATE_HPP
+
+#include <gsl/gsl_integration.h>
+
+template<typename FunT>
+double gslSpecialFunction(double x, void *param)
+{
+  FunT *f = (FunT *)param;
+
+  return (*f)(x);
+}
+
+template<typename FunT>
+double gslIntegrate(FunT& v, double a, double b, double prec, int NPTS = 1024)
+{
+  gsl_integration_workspace *w = gsl_integration_workspace_alloc(NPTS);
+  gsl_function f;
+  double result;
+  double abserr;
+
+  f.function = &gslSpecialFunction<FunT>;
+  f.params = &v;
+
+  gsl_integration_qag(&f, a, b, prec, 0, NPTS, GSL_INTEG_GAUSS61,
+		      w, &result, &abserr);
+  
+  gsl_integration_workspace_free(w);
+
+  return result;
+}
+
+#endif