5 #include "../detail/type_mat4x4.hpp" 
   15         typedef mat<4, 4, double, defaultp>             
dmat4x4;
 
   20         typedef mat<4, 4, double, defaultp>             
dmat4;
 
mat< 4, 4, double, defaultp > dmat4x4
4 columns of 4 components matrix of double-precision floating-point numbers. 
mat< 4, 4, double, defaultp > dmat4
4 columns of 4 components matrix of double-precision floating-point numbers.