1 files changed, 135 insertions, 0 deletions
diff --git a/src/include/glm/ext/quaternion_common.hpp b/src/include/glm/ext/quaternion_common.hpp
new file mode 100644
index 0000000..a146d49
--- /dev/null
+++ b/src/include/glm/ext/quaternion_common.hpp
@@ -0,0 +1,135 @@
+/// @ref ext_quaternion_common
+/// @file glm/ext/quaternion_common.hpp
+///
+/// @defgroup ext_quaternion_common GLM_EXT_quaternion_common
+/// @ingroup ext
+///
+/// Provides common functions for quaternion types
+///
+/// Include <glm/ext/quaternion_common.hpp> to use the features of this extension.
+///
+/// @see ext_scalar_common
+/// @see ext_vector_common
+/// @see ext_quaternion_float
+/// @see ext_quaternion_double
+/// @see ext_quaternion_exponential
+/// @see ext_quaternion_geometric
+/// @see ext_quaternion_relational
+/// @see ext_quaternion_trigonometric
+/// @see ext_quaternion_transform
+
+#pragma once
+
+// Dependency:
+#include "../ext/scalar_constants.hpp"
+#include "../ext/quaternion_geometric.hpp"
+#include "../common.hpp"
+#include "../trigonometric.hpp"
+#include "../exponential.hpp"
+#include <limits>
+
+#if GLM_MESSAGES == GLM_ENABLE && !defined(GLM_EXT_INCLUDED)
+#	pragma message("GLM: GLM_EXT_quaternion_common extension included")
+#endif
+
+namespace glm
+{
+	/// @addtogroup ext_quaternion_common
+	/// @{
+
+	/// Spherical linear interpolation of two quaternions.
+	/// The interpolation is oriented and the rotation is performed at constant speed.
+	/// For short path spherical linear interpolation, use the slerp function.
+	///
+	/// @param x A quaternion
+	/// @param y A quaternion
+	/// @param a Interpolation factor. The interpolation is defined beyond the range [0, 1].
+	///
+	/// @tparam T A floating-point scalar type
+	/// @tparam Q A value from qualifier enum
+	///
+	/// @see - slerp(qua<T, Q> const& x, qua<T, Q> const& y, T const& a)
+	template<typename T, qualifier Q>
+	GLM_FUNC_DECL qua<T, Q> mix(qua<T, Q> const& x, qua<T, Q> const& y, T a);
+
+	/// Linear interpolation of two quaternions.
+	/// The interpolation is oriented.
+	///
+	/// @param x A quaternion
+	/// @param y A quaternion
+	/// @param a Interpolation factor. The interpolation is defined in the range [0, 1].
+	///
+	/// @tparam T A floating-point scalar type
+	/// @tparam Q A value from qualifier enum
+	template<typename T, qualifier Q>
+	GLM_FUNC_DECL qua<T, Q> lerp(qua<T, Q> const& x, qua<T, Q> const& y, T a);
+
+	/// Spherical linear interpolation of two quaternions.
+	/// The interpolation always take the short path and the rotation is performed at constant speed.
+	///
+	/// @param x A quaternion
+	/// @param y A quaternion
+	/// @param a Interpolation factor. The interpolation is defined beyond the range [0, 1].
+	///
+	/// @tparam T A floating-point scalar type
+	/// @tparam Q A value from qualifier enum
+	template<typename T, qualifier Q>
+	GLM_FUNC_DECL qua<T, Q> slerp(qua<T, Q> const& x, qua<T, Q> const& y, T a);
+
+    /// Spherical linear interpolation of two quaternions with multiple spins over rotation axis.
+    /// The interpolation always take the short path when the spin count is positive and long path
+    /// when count is negative. Rotation is performed at constant speed.
+    ///
+    /// @param x A quaternion
+    /// @param y A quaternion
+    /// @param a Interpolation factor. The interpolation is defined beyond the range [0, 1].
+    /// @param k Additional spin count. If Value is negative interpolation will be on "long" path.
+    ///
+    /// @tparam T A floating-point scalar type
+    /// @tparam S An integer scalar type
+    /// @tparam Q A value from qualifier enum
+    template<typename T, typename S, qualifier Q>
+    GLM_FUNC_DECL qua<T, Q> slerp(qua<T, Q> const& x, qua<T, Q> const& y, T a, S k);
+
+	/// Returns the q conjugate.
+	///
+	/// @tparam T A floating-point scalar type
+	/// @tparam Q A value from qualifier enum
+	template<typename T, qualifier Q>
+	GLM_FUNC_DECL qua<T, Q> conjugate(qua<T, Q> const& q);
+
+	/// Returns the q inverse.
+	///
+	/// @tparam T A floating-point scalar type
+	/// @tparam Q A value from qualifier enum
+	template<typename T, qualifier Q>
+	GLM_FUNC_DECL qua<T, Q> inverse(qua<T, Q> const& q);
+
+	/// Returns true if x holds a NaN (not a number)
+	/// representation in the underlying implementation's set of
+	/// floating point representations. Returns false otherwise,
+	/// including for implementations with no NaN
+	/// representations.
+	///
+	/// /!\ When using compiler fast math, this function may fail.
+	///
+	/// @tparam T A floating-point scalar type
+	/// @tparam Q A value from qualifier enum
+	template<typename T, qualifier Q>
+	GLM_FUNC_DECL vec<4, bool, Q> isnan(qua<T, Q> const& x);
+
+	/// Returns true if x holds a positive infinity or negative
+	/// infinity representation in the underlying implementation's
+	/// set of floating point representations. Returns false
+	/// otherwise, including for implementations with no infinity
+	/// representations.
+	///
+	/// @tparam T A floating-point scalar type
+	/// @tparam Q A value from qualifier enum
+	template<typename T, qualifier Q>
+	GLM_FUNC_DECL vec<4, bool, Q> isinf(qua<T, Q> const& x);
+
+	/// @}
+} //namespace glm
+
+#include "quaternion_common.inl"