///////////////////////////////////////////////////////////////////////////////////
/// OpenGL Mathematics (glm.g-truc.net)
///
/// Copyright (c) 2005 - 2012 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 gtx_integer
/// @file glm/gtx/integer.hpp
/// @date 2005-12-24 / 2011-10-13
/// @author Christophe Riccio
///
/// @see core (dependence)
///
/// @defgroup gtx_integer GLM_GTX_integer: Extended integer functions
/// @ingroup gtx
///
/// @brief Add support for integer for core functions
///
/// <glm/gtx/integer.hpp> need to be included to use these functionalities.
///////////////////////////////////////////////////////////////////////////////////

#ifndef GLM_GTX_integer
#define GLM_GTX_integer GLM_VERSION

// Dependency:
#include "../glm.hpp"

#if (defined(GLM_MESSAGES) && !defined(glm_ext))
#pragma message("GLM: GLM_GTX_integer extension included")
#endif

namespace glm {
/// @addtogroup gtx_integer
/// @{

//! Returns x raised to the y power.
//! From GLM_GTX_integer extension.
int pow(int x, int y);

//! Returns the positive square root of x.
//! From GLM_GTX_integer extension.
int sqrt(int x);

//! Returns the log2 of x. Can be reliably using to compute mipmap count from the texture size.
//! From GLM_GTX_integer extension.
template<typename genIUType>
genIUType log2(genIUType const & x);

//! Returns the floor log2 of x.
//! From GLM_GTX_integer extension.
unsigned int floor_log2(unsigned int x);

//! Modulus. Returns x - y * floor(x / y) for each component in x using the floating point value y.
//! From GLM_GTX_integer extension.
int mod(int x, int y);

//! Return the factorial value of a number (!12 max, integer only)
//! From GLM_GTX_integer extension.
template<typename genType>
genType factorial(genType const & x);

//! 32bit signed integer.
//! From GLM_GTX_integer extension.
typedef signed int sint;

//! Returns x raised to the y power.
//! From GLM_GTX_integer extension.
uint pow(uint x, uint y);

//! Returns the positive square root of x.
//! From GLM_GTX_integer extension.
uint sqrt(uint x);

//! Modulus. Returns x - y * floor(x / y) for each component in x using the floating point value y.
//! From GLM_GTX_integer extension.
uint mod(uint x, uint y);

//! Returns the number of leading zeros.
//! From GLM_GTX_integer extension.
uint nlz(uint x);

/// @}
} //namespace glm

#include "integer.inl"

#endif //GLM_GTX_integer
