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