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