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author | LaG1924 <12997935+LaG1924@users.noreply.github.com> | 2018-01-13 03:51:33 +0100 |
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committer | LaG1924 <12997935+LaG1924@users.noreply.github.com> | 2018-01-13 03:51:34 +0100 |
commit | 6f67371bb1b46579ae837d0e0c61ac1b291be743 (patch) | |
tree | 5a43692a064d84e5c5688b1b3639342555139c3c /external/include/glm/gtx/fast_square_root.hpp | |
parent | Backported to C++14 (diff) | |
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Diffstat (limited to 'external/include/glm/gtx/fast_square_root.hpp')
-rw-r--r-- | external/include/glm/gtx/fast_square_root.hpp | 88 |
1 files changed, 88 insertions, 0 deletions
diff --git a/external/include/glm/gtx/fast_square_root.hpp b/external/include/glm/gtx/fast_square_root.hpp new file mode 100644 index 0000000..35aa7f3 --- /dev/null +++ b/external/include/glm/gtx/fast_square_root.hpp @@ -0,0 +1,88 @@ +/// @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 +/// +/// @brief 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 +/// +/// <glm/gtx/fast_square_root.hpp> need to be included to use these functionalities. + +#pragma once + +// Dependency: +#include "../common.hpp" +#include "../exponential.hpp" +#include "../geometric.hpp" + +#if GLM_MESSAGES == GLM_MESSAGES_ENABLED && !defined(GLM_EXT_INCLUDED) +# pragma message("GLM: GLM_GTX_fast_square_root extension included") +#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 <typename T, precision P, template <typename, precision> class vecType> + GLM_FUNC_DECL vecType<T, P> fastSqrt(vecType<T, P> 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 <typename T, precision P, template <typename, precision> class vecType> + GLM_FUNC_DECL vecType<T, P> fastInverseSqrt(vecType<T, P> 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 <typename T, precision P, template <typename, precision> class vecType> + GLM_FUNC_DECL T fastLength(vecType<T, P> 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 <typename T, precision P, template <typename, precision> class vecType> + GLM_FUNC_DECL T fastDistance(vecType<T, P> const & x, vecType<T, P> 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 const & x); + + /// @} +}// namespace glm + +#include "fast_square_root.inl" |