#include <boost/qvm/mat_operations.hpp>
namespace boost
{
    namespace qvm
    {
        //Only enabled if: is_scalar<A>::value && is_mat<B>::value
        template <class A,class B>
        typename deduce_mat<B>::type
        operator*( A a, B const & b );
    }
}
A matrix that is the result of multiplying the scalar a by the matrix b.