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+/// @ref gtc_epsilon
+/// @file glm/gtc/epsilon.inl
+
+// Dependency:
+#include "quaternion.hpp"
+#include "../vector_relational.hpp"
+#include "../common.hpp"
+#include "../vec2.hpp"
+#include "../vec3.hpp"
+#include "../vec4.hpp"
+
+namespace glm
+{
+ template <>
+ GLM_FUNC_QUALIFIER bool epsilonEqual
+ (
+ float const & x,
+ float const & y,
+ float const & epsilon
+ )
+ {
+ return abs(x - y) < epsilon;
+ }
+
+ template <>
+ GLM_FUNC_QUALIFIER bool epsilonEqual
+ (
+ double const & x,
+ double const & y,
+ double const & epsilon
+ )
+ {
+ return abs(x - y) < epsilon;
+ }
+
+ template <>
+ GLM_FUNC_QUALIFIER bool epsilonNotEqual
+ (
+ float const & x,
+ float const & y,
+ float const & epsilon
+ )
+ {
+ return abs(x - y) >= epsilon;
+ }
+
+ template <>
+ GLM_FUNC_QUALIFIER bool epsilonNotEqual
+ (
+ double const & x,
+ double const & y,
+ double const & epsilon
+ )
+ {
+ return abs(x - y) >= epsilon;
+ }
+
+ template <typename T, precision P, template <typename, precision> class vecType>
+ GLM_FUNC_QUALIFIER vecType<bool, P> epsilonEqual
+ (
+ vecType<T, P> const & x,
+ vecType<T, P> const & y,
+ T const & epsilon
+ )
+ {
+ return lessThan(abs(x - y), vecType<T, P>(epsilon));
+ }
+
+ template <typename T, precision P, template <typename, precision> class vecType>
+ GLM_FUNC_QUALIFIER vecType<bool, P> epsilonEqual
+ (
+ vecType<T, P> const & x,
+ vecType<T, P> const & y,
+ vecType<T, P> const & epsilon
+ )
+ {
+ return lessThan(abs(x - y), vecType<T, P>(epsilon));
+ }
+
+ template <typename T, precision P, template <typename, precision> class vecType>
+ GLM_FUNC_QUALIFIER vecType<bool, P> epsilonNotEqual
+ (
+ vecType<T, P> const & x,
+ vecType<T, P> const & y,
+ T const & epsilon
+ )
+ {
+ return greaterThanEqual(abs(x - y), vecType<T, P>(epsilon));
+ }
+
+ template <typename T, precision P, template <typename, precision> class vecType>
+ GLM_FUNC_QUALIFIER vecType<bool, P> epsilonNotEqual
+ (
+ vecType<T, P> const & x,
+ vecType<T, P> const & y,
+ vecType<T, P> const & epsilon
+ )
+ {
+ return greaterThanEqual(abs(x - y), vecType<T, P>(epsilon));
+ }
+
+ template <typename T, precision P>
+ GLM_FUNC_QUALIFIER tvec4<bool, P> epsilonEqual
+ (
+ tquat<T, P> const & x,
+ tquat<T, P> const & y,
+ T const & epsilon
+ )
+ {
+ tvec4<T, P> v(x.x - y.x, x.y - y.y, x.z - y.z, x.w - y.w);
+ return lessThan(abs(v), tvec4<T, P>(epsilon));
+ }
+
+ template <typename T, precision P>
+ GLM_FUNC_QUALIFIER tvec4<bool, P> epsilonNotEqual
+ (
+ tquat<T, P> const & x,
+ tquat<T, P> const & y,
+ T const & epsilon
+ )
+ {
+ tvec4<T, P> v(x.x - y.x, x.y - y.y, x.z - y.z, x.w - y.w);
+ return greaterThanEqual(abs(v), tvec4<T, P>(epsilon));
+ }
+}//namespace glm