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64 lines
2.2 KiB
64 lines
2.2 KiB
/////////////////////////////////////////////////////////////////////////////////////////////////// |
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// OpenGL Mathematics Copyright (c) 2005 - 2011 G-Truc Creation (www.g-truc.net) |
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/////////////////////////////////////////////////////////////////////////////////////////////////// |
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// Created : 2006-01-04 |
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// Updated : 2008-10-07 |
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// Licence : This source is under MIT License |
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// File : glm/gtx/fast_square_root.hpp |
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/////////////////////////////////////////////////////////////////////////////////////////////////// |
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// Dependency: |
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// - GLM core |
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/////////////////////////////////////////////////////////////////////////////////////////////////// |
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// Note: |
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// - Sqrt optimisation based on Newton's method, |
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// www.gamedev.net/community/forums/topic.asp?topic id=139956 |
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/////////////////////////////////////////////////////////////////////////////////////////////////// |
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#ifndef glm_gtx_fast_square_root |
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#define glm_gtx_fast_square_root |
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// Dependency: |
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#include "../glm.hpp" |
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#if(defined(GLM_MESSAGES) && !defined(glm_ext)) |
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# pragma message("GLM: GLM_GTX_fast_square_root extension included") |
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#endif |
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namespace glm{ |
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namespace gtx |
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{ |
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/// @addtogroup gtx_fast_square_root |
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/// @{ |
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//! Faster than the common sqrt function but less accurate. |
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//! From GLM_GTX_fast_square_root extension. |
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template <typename genType> |
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genType fastSqrt(genType const & x); |
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//! Faster than the common inversesqrt function but less accurate. |
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//! From GLM_GTX_fast_square_root extension. |
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template <typename genType> |
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genType fastInverseSqrt(genType const & x); |
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//! Faster than the common length function but less accurate. |
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//! From GLM_GTX_fast_square_root extension. |
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template <typename genType> |
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typename genType::value_type fastLength(genType const & x); |
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//! Faster than the common distance function but less accurate. |
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//! From GLM_GTX_fast_square_root extension. |
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template <typename genType> |
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typename genType::value_type fastDistance(genType const & x, genType const & y); |
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//! Faster than the common normalize function but less accurate. |
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//! From GLM_GTX_fast_square_root extension. |
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template <typename genType> |
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genType fastNormalize(genType const & x); |
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/// @} |
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}// namespace gtx |
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}// namespace glm |
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#include "fast_square_root.inl" |
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#endif//glm_gtx_fast_square_root
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