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diff --git a/src/include/glm/gtx/quaternion.hpp b/src/include/glm/gtx/quaternion.hpp
new file mode 100644
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+++ b/src/include/glm/gtx/quaternion.hpp
@@ -0,0 +1,174 @@
+/// @ref gtx_quaternion
+/// @file glm/gtx/quaternion.hpp
+///
+/// @see core (dependence)
+/// @see gtx_extented_min_max (dependence)
+///
+/// @defgroup gtx_quaternion GLM_GTX_quaternion
+/// @ingroup gtx
+///
+/// Include <glm/gtx/quaternion.hpp> to use the features of this extension.
+///
+/// Extented quaternion types and functions
+
+#pragma once
+
+// Dependency:
+#include "../glm.hpp"
+#include "../gtc/constants.hpp"
+#include "../gtc/quaternion.hpp"
+#include "../ext/quaternion_exponential.hpp"
+#include "../gtx/norm.hpp"
+
+#if GLM_MESSAGES == GLM_ENABLE && !defined(GLM_EXT_INCLUDED)
+#	ifndef GLM_ENABLE_EXPERIMENTAL
+#		pragma message("GLM: GLM_GTX_quaternion is an experimental extension and may change in the future. Use #define GLM_ENABLE_EXPERIMENTAL before including it, if you really want to use it.")
+#	else
+#		pragma message("GLM: GLM_GTX_quaternion extension included")
+#	endif
+#endif
+
+namespace glm
+{
+	/// @addtogroup gtx_quaternion
+	/// @{
+
+	/// Create an identity quaternion.
+	///
+	/// @see gtx_quaternion
+	template<typename T, qualifier Q>
+	GLM_FUNC_DECL GLM_CONSTEXPR qua<T, Q> quat_identity();
+
+	/// Compute a cross product between a quaternion and a vector.
+	///
+	/// @see gtx_quaternion
+	template<typename T, qualifier Q>
+	GLM_FUNC_DECL vec<3, T, Q> cross(
+		qua<T, Q> const& q,
+		vec<3, T, Q> const& v);
+
+	//! Compute a cross product between a vector and a quaternion.
+	///
+	/// @see gtx_quaternion
+	template<typename T, qualifier Q>
+	GLM_FUNC_DECL vec<3, T, Q> cross(
+		vec<3, T, Q> const& v,
+		qua<T, Q> const& q);
+
+	//! Compute a point on a path according squad equation.
+	//! q1 and q2 are control points; s1 and s2 are intermediate control points.
+	///
+	/// @see gtx_quaternion
+	template<typename T, qualifier Q>
+	GLM_FUNC_DECL qua<T, Q> squad(
+		qua<T, Q> const& q1,
+		qua<T, Q> const& q2,
+		qua<T, Q> const& s1,
+		qua<T, Q> const& s2,
+		T const& h);
+
+	//! Returns an intermediate control point for squad interpolation.
+	///
+	/// @see gtx_quaternion
+	template<typename T, qualifier Q>
+	GLM_FUNC_DECL qua<T, Q> intermediate(
+		qua<T, Q> const& prev,
+		qua<T, Q> const& curr,
+		qua<T, Q> const& next);
+
+	//! Returns quarternion square root.
+	///
+	/// @see gtx_quaternion
+	//template<typename T, qualifier Q>
+	//qua<T, Q> sqrt(
+	//	qua<T, Q> const& q);
+
+	//! Rotates a 3 components vector by a quaternion.
+	///
+	/// @see gtx_quaternion
+	template<typename T, qualifier Q>
+	GLM_FUNC_DECL vec<3, T, Q> rotate(
+		qua<T, Q> const& q,
+		vec<3, T, Q> const& v);
+
+	/// Rotates a 4 components vector by a quaternion.
+	///
+	/// @see gtx_quaternion
+	template<typename T, qualifier Q>
+	GLM_FUNC_DECL vec<4, T, Q> rotate(
+		qua<T, Q> const& q,
+		vec<4, T, Q> const& v);
+
+	/// Extract the real component of a quaternion.
+	///
+	/// @see gtx_quaternion
+	template<typename T, qualifier Q>
+	GLM_FUNC_DECL T extractRealComponent(
+		qua<T, Q> const& q);
+
+	/// Converts a quaternion to a 3 * 3 matrix.
+	///
+	/// @see gtx_quaternion
+	template<typename T, qualifier Q>
+	GLM_FUNC_DECL mat<3, 3, T, Q> toMat3(
+		qua<T, Q> const& x){return mat3_cast(x);}
+
+	/// Converts a quaternion to a 4 * 4 matrix.
+	///
+	/// @see gtx_quaternion
+	template<typename T, qualifier Q>
+	GLM_FUNC_DECL mat<4, 4, T, Q> toMat4(
+		qua<T, Q> const& x){return mat4_cast(x);}
+
+	/// Converts a 3 * 3 matrix to a quaternion.
+	///
+	/// @see gtx_quaternion
+	template<typename T, qualifier Q>
+	GLM_FUNC_DECL qua<T, Q> toQuat(
+		mat<3, 3, T, Q> const& x){return quat_cast(x);}
+
+	/// Converts a 4 * 4 matrix to a quaternion.
+	///
+	/// @see gtx_quaternion
+	template<typename T, qualifier Q>
+	GLM_FUNC_DECL qua<T, Q> toQuat(
+		mat<4, 4, T, Q> const& x){return quat_cast(x);}
+
+	/// Quaternion interpolation using the rotation short path.
+	///
+	/// @see gtx_quaternion
+	template<typename T, qualifier Q>
+	GLM_FUNC_DECL qua<T, Q> shortMix(
+		qua<T, Q> const& x,
+		qua<T, Q> const& y,
+		T const& a);
+
+	/// Quaternion normalized linear interpolation.
+	///
+	/// @see gtx_quaternion
+	template<typename T, qualifier Q>
+	GLM_FUNC_DECL qua<T, Q> fastMix(
+		qua<T, Q> const& x,
+		qua<T, Q> const& y,
+		T const& a);
+
+	/// Compute the rotation between two vectors.
+	/// @param orig vector, needs to be normalized
+	/// @param dest vector, needs to be normalized
+	///
+	/// @see gtx_quaternion
+	template<typename T, qualifier Q>
+	GLM_FUNC_DECL qua<T, Q> rotation(
+		vec<3, T, Q> const& orig,
+		vec<3, T, Q> const& dest);
+
+	/// Returns the squared length of x.
+	///
+	/// @see gtx_quaternion
+	template<typename T, qualifier Q>
+	GLM_FUNC_DECL GLM_CONSTEXPR T length2(qua<T, Q> const& q);
+
+	/// @}
+}//namespace glm
+
+#include "quaternion.inl"