# QVM: Quaternions, Vectors, Matrices

### operator*=(mat,mat)

#include <boost/qvm/mat_operations.hpp>

    namespace boost
    {
        namespace qvm
        {
            //Only enabled if:
            //  is_mat<A>::value && is_mat<B>::value &&
            //  mat_traits<A>::rows==mat_traits<A>::cols &&
            //  mat_traits<A>::rows==mat_traits<B>::rows &&
            //  mat_traits<A>::cols==mat_traits<B>::cols
            template <class A,class B>
            A & operator*=( A & a, B const & b );
        }
    }

#### Effects:

As if:

    A tmp(a);
    a = tmp * b;
    return a;

See also: boost/qvm/mat_operations.hpp | rotate(mat,vec,scalar) | rotate_x(mat,scalar) | rotate_y(mat,scalar) | rotate_z(mat,scalar)