Add glm 0.9.2

ExternalLibs/glm/gtx/bit.hpp

@@ -0,0 +1,107 @@
+///////////////////////////////////////////////////////////////////////////////////////////////////
+// OpenGL Mathematics Copyright (c) 2005 - 2011 G-Truc Creation (www.g-truc.net)
+///////////////////////////////////////////////////////////////////////////////////////////////////
+// Created : 2007-03-14
+// Updated : 2008-11-14
+// Licence : This source is under MIT License
+// File    : glm/gtx/bit.hpp
+///////////////////////////////////////////////////////////////////////////////////////////////////
+// Dependency:
+// - GLM core
+// - GLM_GTC_half_float
+///////////////////////////////////////////////////////////////////////////////////////////////////
+
+#ifndef glm_gtx_bit
+#define glm_gtx_bit
+
+// Dependency:
+#include "../glm.hpp"
+#include "../gtc/half_float.hpp"
+
+#if(defined(GLM_MESSAGES) && !defined(glm_ext))
+#	pragma message("GLM: GLM_GTX_bit extension included")
+#endif
+
+namespace glm{
+namespace gtx{
+namespace bit ///< GLM_GTX_bit extension: Allow to perform bit operations on integer values
+{
+	using namespace gtc::half_float;
+
+	/// \addtogroup gtx_bit
+	///@{
+
+	//! Build a mask of 'count' bits
+	//! From GLM_GTX_bit extension.
+	template <typename genIType>
+	genIType mask(genIType const & count);
+
+	//! Component wise extraction of bit fields.
+	//! genType and genIType could be a scalar or a vector.
+	//! From GLM_GTX_bit extension.
+	template <typename genIUType, typename sizeType>
+	genIUType extractField(
+		genIUType const & v, 
+		sizeType const & first, 
+		sizeType const & count);
+
+	//! Find the lowest bit set to 1 in a integer variable.
+	//! From GLM_GTX_bit extension.
+	template <typename genType> 
+	int lowestBit(genType const & value);
+
+	//! Find the highest bit set to 1 in a integer variable.
+	//! From GLM_GTX_bit extension.
+	template <typename genType> 
+	int highestBit(genType const & value);
+
+	//! Find the highest bit set to 1 in a integer variable and return its value. 
+	//! From GLM_GTX_bit extension.
+	template <typename genType> 
+	genType highestBitValue(genType const & value);
+
+	//! Return true if the value is a power of two number. 
+	//! From GLM_GTX_bit extension. 
+	template <typename genType> 
+	bool isPowerOfTwo(genType const & value);
+
+	//! Return the power of two number which value is just higher the input value.
+	//! From GLM_GTX_bit extension.
+	template <typename genType> 
+	genType powerOfTwoAbove(genType const & value);
+
+	//! Return the power of two number which value is just lower the input value. 
+	//! From GLM_GTX_bit extension.
+	template <typename genType> 
+	genType powerOfTwoBelow(genType const & value);
+
+	//! Return the power of two number which value is the closet to the input value. 
+	//! From GLM_GTX_bit extension.
+	template <typename genType> 
+	genType powerOfTwoNearest(genType const & value);
+
+	//! Revert all bits of any integer based type. 
+	//! From GLM_GTX_bit extension.
+	template <typename genType> 
+	genType bitRevert(genType const & value);
+
+	//! Rotate all bits to the right.
+	//! From GLM_GTX_bit extension.
+	template <typename genType>
+	genType bitRotateRight(genType const & In, std::size_t Shift);
+
+	//! Rotate all bits to the left.
+	//! From GLM_GTX_bit extension.
+	template <typename genType>
+	genType bitRotateLeft(genType const & In, std::size_t Shift);
+
+	///@}
+}//namespace bit
+}//namespace gtx
+}//namespace glm
+
+#include "bit.inl"
+
+namespace glm{using namespace gtx::bit;}
+
+#endif//glm_gtx_bit