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authorjjesswan <jessica_wan@brown.edu>2024-04-22 21:56:26 -0400
committerjjesswan <jessica_wan@brown.edu>2024-04-22 21:56:26 -0400
commita556b45abf18f1bd509daaf63b66b7d55e9fd291 (patch)
treebc9b8a2d184c12aee236e7f9f276a34b84ca552d /engine-ocean/External/glm-master/glm/gtx/fast_square_root.hpp
parentcd7c76017a12bb548036571c1ff13e551369d06d (diff)
add engine version
Diffstat (limited to 'engine-ocean/External/glm-master/glm/gtx/fast_square_root.hpp')
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+/// @ref gtx_fast_square_root
+/// @file glm/gtx/fast_square_root.hpp
+///
+/// @see core (dependence)
+///
+/// @defgroup gtx_fast_square_root GLM_GTX_fast_square_root
+/// @ingroup gtx
+///
+/// Include <glm/gtx/fast_square_root.hpp> to use the features of this extension.
+///
+/// Fast but less accurate implementations of square root based functions.
+/// - Sqrt optimisation based on Newton's method,
+/// www.gamedev.net/community/forums/topic.asp?topic id=139956
+
+#pragma once
+
+// Dependency:
+#include "../common.hpp"
+#include "../exponential.hpp"
+#include "../geometric.hpp"
+
+#if GLM_MESSAGES == GLM_ENABLE && !defined(GLM_EXT_INCLUDED)
+# ifndef GLM_ENABLE_EXPERIMENTAL
+# pragma message("GLM: GLM_GTX_fast_square_root 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_fast_square_root extension included")
+# endif
+#endif
+
+namespace glm
+{
+ /// @addtogroup gtx_fast_square_root
+ /// @{
+
+ /// Faster than the common sqrt function but less accurate.
+ ///
+ /// @see gtx_fast_square_root extension.
+ template<typename genType>
+ GLM_FUNC_DECL genType fastSqrt(genType x);
+
+ /// Faster than the common sqrt function but less accurate.
+ ///
+ /// @see gtx_fast_square_root extension.
+ template<length_t L, typename T, qualifier Q>
+ GLM_FUNC_DECL vec<L, T, Q> fastSqrt(vec<L, T, Q> const& x);
+
+ /// Faster than the common inversesqrt function but less accurate.
+ ///
+ /// @see gtx_fast_square_root extension.
+ template<typename genType>
+ GLM_FUNC_DECL genType fastInverseSqrt(genType x);
+
+ /// Faster than the common inversesqrt function but less accurate.
+ ///
+ /// @see gtx_fast_square_root extension.
+ template<length_t L, typename T, qualifier Q>
+ GLM_FUNC_DECL vec<L, T, Q> fastInverseSqrt(vec<L, T, Q> const& x);
+
+ /// Faster than the common length function but less accurate.
+ ///
+ /// @see gtx_fast_square_root extension.
+ template<typename genType>
+ GLM_FUNC_DECL genType fastLength(genType x);
+
+ /// Faster than the common length function but less accurate.
+ ///
+ /// @see gtx_fast_square_root extension.
+ template<length_t L, typename T, qualifier Q>
+ GLM_FUNC_DECL T fastLength(vec<L, T, Q> const& x);
+
+ /// Faster than the common distance function but less accurate.
+ ///
+ /// @see gtx_fast_square_root extension.
+ template<typename genType>
+ GLM_FUNC_DECL genType fastDistance(genType x, genType y);
+
+ /// Faster than the common distance function but less accurate.
+ ///
+ /// @see gtx_fast_square_root extension.
+ template<length_t L, typename T, qualifier Q>
+ GLM_FUNC_DECL T fastDistance(vec<L, T, Q> const& x, vec<L, T, Q> const& y);
+
+ /// Faster than the common normalize function but less accurate.
+ ///
+ /// @see gtx_fast_square_root extension.
+ template<typename genType>
+ GLM_FUNC_DECL genType fastNormalize(genType x);
+
+ /// Faster than the common normalize function but less accurate.
+ ///
+ /// @see gtx_fast_square_root extension.
+ template<length_t L, typename T, qualifier Q>
+ GLM_FUNC_DECL vec<L, T, Q> fastNormalize(vec<L, T, Q> const& x);
+
+ /// @}
+}// namespace glm
+
+#include "fast_square_root.inl"