Boost LA

boost/la/vector_make.hpp

#include <boost/la/vector_make.hpp>

namespace
boost
    {
    namespace
    la
        {
        //Only enabled if:
        //  is_vector<R>::value && is_vector<A>::value &&
        //  vector_traits<R>::dim==vector_traits<A>::dim
        template <class R,class A>
        R
        make( A const & a );
        }
    }

See also: make(vector)