%module "Math::GSL::Spline" %include "typemaps.i" %include "gsl_typemaps.i" %apply double *OUTPUT { double * y, double * d, double * d2, double * result }; %{ #include "gsl/gsl_spline.h" %} %include "gsl/gsl_spline.h" %include "../pod/Spline.pod"