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lib/glm/gtc/ulp.hpp

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+/// @ref gtc_ulp
+/// @file glm/gtc/ulp.hpp
+///
+/// @see core (dependence)
+///
+/// @defgroup gtc_ulp GLM_GTC_ulp
+/// @ingroup gtc
+///
+/// @brief Allow the measurement of the accuracy of a function against a reference 
+/// implementation. This extension works on floating-point data and provide results 
+/// in ULP.
+/// <glm/gtc/ulp.hpp> need to be included to use these features.
+
+#pragma once
+
+// Dependencies
+#include "../detail/setup.hpp"
+#include "../detail/precision.hpp"
+#include "../detail/type_int.hpp"
+
+#if GLM_MESSAGES == GLM_MESSAGES_ENABLED && !defined(GLM_EXT_INCLUDED)
+#	pragma message("GLM: GLM_GTC_ulp extension included")
+#endif
+
+namespace glm
+{
+	/// @addtogroup gtc_ulp
+	/// @{
+
+	/// Return the next ULP value(s) after the input value(s).
+	/// @see gtc_ulp
+	template <typename genType>
+	GLM_FUNC_DECL genType next_float(genType const & x);
+
+	/// Return the previous ULP value(s) before the input value(s).
+	/// @see gtc_ulp
+	template <typename genType>
+	GLM_FUNC_DECL genType prev_float(genType const & x);
+
+	/// Return the value(s) ULP distance after the input value(s).
+	/// @see gtc_ulp
+	template <typename genType>
+	GLM_FUNC_DECL genType next_float(genType const & x, uint const & Distance);
+
+	/// Return the value(s) ULP distance before the input value(s).
+	/// @see gtc_ulp
+	template <typename genType>
+	GLM_FUNC_DECL genType prev_float(genType const & x, uint const & Distance);
+	
+	/// Return the distance in the number of ULP between 2 scalars.
+	/// @see gtc_ulp
+	template <typename T>
+	GLM_FUNC_DECL uint float_distance(T const & x, T const & y);
+
+	/// Return the distance in the number of ULP between 2 vectors.
+	/// @see gtc_ulp
+	template<typename T, template<typename> class vecType>
+	GLM_FUNC_DECL vecType<uint> float_distance(vecType<T> const & x, vecType<T> const & y);
+	
+	/// @}
+}// namespace glm
+
+#include "ulp.inl"