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///////////////////////////////////////////////////////////////////////////////////
/// OpenGL Mathematics (glm.g-truc.net)
///
/// Copyright (c) 2005 - 2013 G-Truc Creation (www.g-truc.net)
/// Permission is hereby granted, free of charge, to any person obtaining a copy
/// of this software and associated documentation files (the "Software"), to deal
/// in the Software without restriction, including without limitation the rights
/// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
/// copies of the Software, and to permit persons to whom the Software is
/// furnished to do so, subject to the following conditions:
///
/// The above copyright notice and this permission notice shall be included in
/// all copies or substantial portions of the Software.
///
/// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
/// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
/// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
/// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
/// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
/// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
/// THE SOFTWARE.
///
/// @ref gtc_constants
/// @file glm/gtc/constants.hpp
/// @date 2011-09-30 / 2012-01-25
/// @author Christophe Riccio
///
/// @see core (dependence)
/// @see gtc_half_float (dependence)
///
/// @defgroup gtc_constants GLM_GTC_constants
/// @ingroup gtc
///
/// @brief Allow to perform bit operations on integer values
///
/// <glm/gtc/constants.hpp> need to be included to use these features.
///////////////////////////////////////////////////////////////////////////////////
#ifndef GLM_GTC_constants
#define GLM_GTC_constants GLM_VERSION
// Dependency:
#include "../glm.hpp"
#include "../gtc/half_float.hpp"
#if(defined(GLM_MESSAGES) && !defined(glm_ext))
# pragma message("GLM: GLM_GTC_constants extension included")
#endif
namespace glm
{
/// @addtogroup gtc_constants
/// @{
/// Return the epsilon constant for floating point types.
/// @todo Implement epsilon for half-precision floating point type.
/// @see gtc_constants
template <typename genType>
GLM_FUNC_DECL genType epsilon();
/// Return 0.
/// @see gtc_constants
template <typename genType>
GLM_FUNC_DECL genType zero();
/// Return 1.
/// @see gtc_constants
template <typename genType>
GLM_FUNC_DECL genType one();
/// Return the pi constant.
/// @see gtc_constants
template <typename genType>
GLM_FUNC_DECL genType pi();
/// Return square root of pi.
/// @see gtc_constants
template <typename genType>
GLM_FUNC_DECL genType root_pi();
/// Return pi / 2.
/// @see gtc_constants
template <typename genType>
GLM_FUNC_DECL genType half_pi();
/// Return pi / 4.
/// @see gtc_constants
template <typename genType>
GLM_FUNC_DECL genType quarter_pi();
/// Return 1 / pi.
/// @see gtc_constants
template <typename genType>
GLM_FUNC_DECL genType one_over_pi();
/// Return 2 / pi.
/// @see gtc_constants
template <typename genType>
GLM_FUNC_DECL genType two_over_pi();
/// Return 2 / sqrt(pi).
/// @see gtc_constants
template <typename genType>
GLM_FUNC_DECL genType two_over_root_pi();
/// Return 1 / sqrt(2).
/// @see gtc_constants
template <typename genType>
GLM_FUNC_DECL genType one_over_root_two();
/// Return sqrt(pi / 2).
/// @see gtc_constants
template <typename genType>
GLM_FUNC_DECL genType root_half_pi();
/// Return sqrt(2 * pi).
/// @see gtc_constants
template <typename genType>
GLM_FUNC_DECL genType root_two_pi();
/// Return sqrt(ln(4)).
/// @see gtc_constants
template <typename genType>
GLM_FUNC_DECL genType root_ln_four();
/// Return e constant.
/// @see gtc_constants
template <typename genType>
GLM_FUNC_DECL genType e();
/// Return Euler's constant.
/// @see gtc_constants
template <typename genType>
GLM_FUNC_DECL genType euler();
/// Return sqrt(2).
/// @see gtc_constants
template <typename genType>
GLM_FUNC_DECL genType root_two();
/// Return sqrt(3).
/// @see gtc_constants
template <typename genType>
GLM_FUNC_DECL genType root_three();
/// Return sqrt(5).
/// @see gtc_constants
template <typename genType>
GLM_FUNC_DECL genType root_five();
/// Return ln(2).
/// @see gtc_constants
template <typename genType>
GLM_FUNC_DECL genType ln_two();
/// Return ln(10).
/// @see gtc_constants
template <typename genType>
GLM_FUNC_DECL genType ln_ten();
/// Return ln(ln(2)).
/// @see gtc_constants
template <typename genType>
GLM_FUNC_DECL genType ln_ln_two();
/// Return 1 / 3.
/// @see gtc_constants
template <typename genType>
GLM_FUNC_DECL genType third();
/// Return 2 / 3.
/// @see gtc_constants
template <typename genType>
GLM_FUNC_DECL genType two_thirds();
/// Return the golden ratio constant.
/// @see gtc_constants
template <typename genType>
GLM_FUNC_DECL genType golden_ratio();
/// @}
} //namespace glm
#include "constants.inl"
#endif//GLM_GTC_constants
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