//
//  Copyright (C) 2003 Rational Discovery LLC
//

#include <boost/python.hpp>
#include <boost/python/numeric.hpp>
#define PY_ARRAY_UNIQUE_SYMBOL RD_array_API
#include "numpy/oldnumeric.h"


namespace python = boost::python;

double GetFirstElement(python::numeric::array &x){
  PyArrayObject *ptr = (PyArrayObject *)x.ptr();
  void* data = ptr->data;
  double res=0.0;

  switch(ptr->descr->type_num)
    {
    case PyArray_DOUBLE:
      res = ((double *)data)[0];
      break;
    case PyArray_FLOAT:
      res = (double)((float *)data)[0];
      break;
    case PyArray_LONG:
      res = (double)((long *)data)[0];
      break;
    case PyArray_INT:
      res = (double)((int *)data)[0];
      break;
    }
  return res;
  
}


BOOST_PYTHON_MODULE(linalg)
{
  python::def("GetFirstElement",GetFirstElement);

}