0.9.9/api/a00305_source.html

 #pragma once

 #include "../detail/type_vec1.hpp"

 #if GLM_MESSAGES == GLM_ENABLE && !defined(GLM_EXT_INCLUDED)
 #   pragma message("GLM: GLM_EXT_vector_float1_precision extension included")
 #endif

 namespace glm
 {

     typedef vec<1, float, highp>        highp_vec1;

     typedef vec<1, float, mediump>      mediump_vec1;

     typedef vec<1, float, lowp>         lowp_vec1;

 }//namespace glm
glm::highp_vec1
vec< 1, float, highp > highp_vec1
1 component vector of single-precision floating-point numbers using high precision arithmetic in term...
Definition: vector_float1_precision.hpp:27

glm::lowp_vec1
vec< 1, float, lowp > lowp_vec1
1 component vector of single-precision floating-point numbers using low precision arithmetic in term ...
Definition: vector_float1_precision.hpp:33

glm::mediump_vec1
vec< 1, float, mediump > mediump_vec1
1 component vector of single-precision floating-point numbers using medium precision arithmetic in te...
Definition: vector_float1_precision.hpp:30

glm
Definition: common.hpp:20