[ublas] What's wrong with this simple test?

From: Neal Becker (ndbecker2_at_[hidden])
Date: 2006-04-17 09:16:36

I'm stumped - any hints?

#include <boost/numeric/ublas/vector.hpp>
#include <boost/numeric/ublas/matrix.hpp>

int main() {
  namespace ublas = boost::numeric::ublas;

  ublas::vector<int> a (4);
  ublas::matrix<int> b (4,4);
  ublas::matrix<int> c = ublas::prod (a, b);
}

Test.cc: In function ‘int main()’:
Test.cc:9: error: conversion from
‘boost::numeric::ublas::matrix_vector_binary2<boost::numeric::ublas::vector<int,
boost::numeric::ublas::unbounded_array<int, std::allocator<int> > >,
boost::numeric::ublas::matrix<int,
boost::numeric::ublas::basic_row_major<long unsigned int, long int>,
boost::numeric::ublas::unbounded_array<int, std::allocator<int> > >,
boost::numeric::ublas::matrix_vector_prod2<int, int, int> >’ to non-scalar
type ‘boost::numeric::ublas::matrix<int,
boost::numeric::ublas::basic_row_major<long unsigned int, long int>,
boost::numeric::ublas::unbounded_array<int, std::allocator<int> > >’
requested