xref: /external/vulkan-validation-layers/libs/glm/gtc/epsilon.hpp

///////////////////////////////////////////////////////////////////////////////////
/// OpenGL Mathematics (glm.g-truc.net)
///
/// Copyright (c) 2005 - 2014 G-Truc Creation (www.g-truc.net)
/// Permission is hereby granted, free of charge, to any person obtaining a copy
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/// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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/// furnished to do so, subject to the following conditions:
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/// all copies or substantial portions of the Software.
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/// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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/// THE SOFTWARE.
///
/// @ref gtc_epsilon
/// @file glm/gtc/epsilon.hpp
/// @date 2012-04-07 / 2012-04-07
/// @author Christophe Riccio
///
/// @see core (dependence)
/// @see gtc_half_float (dependence)
/// @see gtc_quaternion (dependence)
///
/// @defgroup gtc_epsilon GLM_GTC_epsilon
/// @ingroup gtc
///
/// @brief Comparison functions for a user defined epsilon values.
///
/// <glm/gtc/epsilon.hpp> need to be included to use these functionalities.
///////////////////////////////////////////////////////////////////////////////////

#ifndef GLM_GTC_epsilon
#define GLM_GTC_epsilon

// Dependencies
#include "../detail/setup.hpp"
#include "../detail/precision.hpp"

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

namespace glm
{
	/// @addtogroup gtc_epsilon
	/// @{

	/// Returns the component-wise comparison of |x - y| < epsilon.
	/// True if this expression is satisfied.
	///
	/// @see gtc_epsilon
	template <typename T, precision P, template <typename, precision> class vecType>
	GLM_FUNC_DECL vecType<bool, P> epsilonEqual(
		vecType<T, P> const & x,
		vecType<T, P> const & y,
		T const & epsilon);

	/// Returns the component-wise comparison of |x - y| < epsilon.
	/// True if this expression is satisfied.
	///
	/// @see gtc_epsilon
	template <typename genType>
	GLM_FUNC_DECL bool epsilonEqual(
		genType const & x,
		genType const & y,
		genType const & epsilon);

	/// Returns the component-wise comparison of |x - y| < epsilon.
	/// True if this expression is not satisfied.
	///
	/// @see gtc_epsilon
	template <typename genType>
	GLM_FUNC_DECL typename genType::boolType epsilonNotEqual(
		genType const & x,
		genType const & y,
		typename genType::value_type const & epsilon);

	/// Returns the component-wise comparison of |x - y| >= epsilon.
	/// True if this expression is not satisfied.
	///
	/// @see gtc_epsilon
	template <typename genType>
	GLM_FUNC_DECL bool epsilonNotEqual(
		genType const & x,
		genType const & y,
		genType const & epsilon);

	/// @}
}//namespace glm

#include "epsilon.inl"

#endif//GLM_GTC_epsilon