%module "Math::GSL::CBLAS" %include "typemaps.i" %include "gsl_typemaps.i" %apply double *INPUT { float const *X }; %apply float *INPUT { double const *X }; %apply double *OUTPUT { float *C }; %{ #include "gsl/gsl_cblas.h" %} %include "gsl/gsl_cblas.h" %include "../pod/CBLAS.pod"