From e62817b8252974b8a98393275874ee303840bf13 Mon Sep 17 00:00:00 2001 From: LaG1924 <12997935+LaG1924@users.noreply.github.com> Date: Fri, 12 May 2017 18:49:50 +0500 Subject: 2017-05-12 --- depedencies/include/glm/gtx/bit.inl | 93 +++++++++++++++++++++++++++++++++++++ 1 file changed, 93 insertions(+) create mode 100644 depedencies/include/glm/gtx/bit.inl (limited to 'depedencies/include/glm/gtx/bit.inl') diff --git a/depedencies/include/glm/gtx/bit.inl b/depedencies/include/glm/gtx/bit.inl new file mode 100644 index 0000000..10d5f7f --- /dev/null +++ b/depedencies/include/glm/gtx/bit.inl @@ -0,0 +1,93 @@ +/// @ref gtx_bit +/// @file glm/gtx/bit.inl + +namespace glm +{ + /////////////////// + // highestBitValue + + template + GLM_FUNC_QUALIFIER genIUType highestBitValue(genIUType Value) + { + genIUType tmp = Value; + genIUType result = genIUType(0); + while(tmp) + { + result = (tmp & (~tmp + 1)); // grab lowest bit + tmp &= ~result; // clear lowest bit + } + return result; + } + + template class vecType> + GLM_FUNC_QUALIFIER vecType highestBitValue(vecType const & v) + { + return detail::functor1::call(highestBitValue, v); + } + + /////////////////// + // lowestBitValue + + template + GLM_FUNC_QUALIFIER genIUType lowestBitValue(genIUType Value) + { + return (Value & (~Value + 1)); + } + + template class vecType> + GLM_FUNC_QUALIFIER vecType lowestBitValue(vecType const & v) + { + return detail::functor1::call(lowestBitValue, v); + } + + /////////////////// + // powerOfTwoAbove + + template + GLM_FUNC_QUALIFIER genType powerOfTwoAbove(genType value) + { + return isPowerOfTwo(value) ? value : highestBitValue(value) << 1; + } + + template class vecType> + GLM_FUNC_QUALIFIER vecType powerOfTwoAbove(vecType const & v) + { + return detail::functor1::call(powerOfTwoAbove, v); + } + + /////////////////// + // powerOfTwoBelow + + template + GLM_FUNC_QUALIFIER genType powerOfTwoBelow(genType value) + { + return isPowerOfTwo(value) ? value : highestBitValue(value); + } + + template class vecType> + GLM_FUNC_QUALIFIER vecType powerOfTwoBelow(vecType const & v) + { + return detail::functor1::call(powerOfTwoBelow, v); + } + + ///////////////////// + // powerOfTwoNearest + + template + GLM_FUNC_QUALIFIER genType powerOfTwoNearest(genType value) + { + if(isPowerOfTwo(value)) + return value; + + genType const prev = highestBitValue(value); + genType const next = prev << 1; + return (next - value) < (value - prev) ? next : prev; + } + + template class vecType> + GLM_FUNC_QUALIFIER vecType powerOfTwoNearest(vecType const & v) + { + return detail::functor1::call(powerOfTwoNearest, v); + } + +}//namespace glm -- cgit v1.2.3