# QVM: Quaternions, Vectors, Matrices

### set_identity(mat)

#include <boost/qvm/mat_operations.hpp>

    namespace boost
    {
        namespace qvm
        {
            //Only enabled if:
            //  is_mat<A>::value &&
            //  mat_traits<A>::cols==mat_traits<A>::rows
            template <class A>
            void set_identity( A & a );
        }
    }

#### Effects:

As if

    assign(
        a,
        identity_mat<
            typename mat_traits<A>::scalar_type,
            mat_traits<A>::rows,
            mat_traits<A>::cols>());

See also: boost/qvm/mat_operations.hpp