GLM Version 0.9.0

fast_square_root.hpp

00001 
00002 // OpenGL Mathematics Copyright (c) 2005 - 2011 G-Truc Creation (www.g-truc.net)
00004 // Created : 2006-01-04
00005 // Updated : 2008-10-07
00006 // Licence : This source is under MIT License
00007 // File    : glm/gtx/fast_square_root.hpp
00009 // Dependency:
00010 // - GLM core
00012 // Note:
00013 // - Sqrt optimisation based on Newton's method, 
00014 // www.gamedev.net/community/forums/topic.asp?topic id=139956
00016 
00017 #ifndef glm_gtx_fast_square_root
00018 #define glm_gtx_fast_square_root
00019 
00020 // Dependency:
00021 #include "../glm.hpp"
00022 
00023 namespace glm
00024 {
00025         namespace test{
00026                 void main_gtx_fast_square_root();
00027         }//namespace test
00028 
00029         namespace gtx{
00031         namespace fast_square_root
00032         {
00035                 template <typename genType> 
00036                 genType fastSqrt(genType const & x);
00037 
00040                 template <typename genType> 
00041                 genType fastInverseSqrt(genType const & x);
00042                 
00045                 template <typename genType> 
00046                 typename genType::value_type fastLength(genType const & x);
00047 
00050                 template <typename genType> 
00051                 typename genType::value_type fastDistance(genType const & x, genType const & y);
00052 
00055                 template <typename genType> 
00056                 genType fastNormalize(genType const & x);
00057 
00058         }//namespace fast_square_root
00059         }//     namespace gtx
00060 }//namespace glm
00061 
00062 #include "fast_square_root.inl"
00063 
00064 namespace glm{using namespace gtx::fast_square_root;}
00065 
00066 #endif//glm_gtx_fast_square_root