doc/api/a00224_source.html

 #pragma once

 // Dependency:
 #include "../vector_relational.hpp"

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

 namespace glm
 {

     template<typename T, qualifier Q>
     GLM_FUNC_DECL vec<4, bool, Q> equal(qua<T, Q> const& x, qua<T, Q> const& y);

     template<typename T, qualifier Q>
     GLM_FUNC_DECL vec<4, bool, Q> equal(qua<T, Q> const& x, qua<T, Q> const& y, T epsilon);

     template<typename T, qualifier Q>
     GLM_FUNC_DECL vec<4, bool, Q> notEqual(qua<T, Q> const& x, qua<T, Q> const& y);

     template<typename T, qualifier Q>
     GLM_FUNC_DECL vec<4, bool, Q> notEqual(qua<T, Q> const& x, qua<T, Q> const& y, T epsilon);

 } //namespace glm

 #include "quaternion_relational.inl"
glm::equal
GLM_FUNC_DECL vec< 4, bool, Q > equal(qua< T, Q > const &x, qua< T, Q > const &y, T epsilon)
Returns the component-wise comparison of |x - y| < epsilon.

glm::epsilon
GLM_FUNC_DECL GLM_CONSTEXPR genType epsilon()
Return the epsilon constant for floating point types.

glm::notEqual
GLM_FUNC_DECL vec< 4, bool, Q > notEqual(qua< T, Q > const &x, qua< T, Q > const &y, T epsilon)
Returns the component-wise comparison of |x - y| >= epsilon.

glm
Definition: common.hpp:20