mirror of
https://github.com/JoeyDeVries/LearnOpenGL.git
synced 2026-01-08 09:43:22 +08:00
Updated GLM version w/ now standard radians as angles.
This commit is contained in:
@@ -1,7 +1,7 @@
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///////////////////////////////////////////////////////////////////////////////////
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/// OpenGL Mathematics (glm.g-truc.net)
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///
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/// Copyright (c) 2005 - 2013 G-Truc Creation (www.g-truc.net)
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/// Copyright (c) 2005 - 2015 G-Truc Creation (www.g-truc.net)
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/// Permission is hereby granted, free of charge, to any person obtaining a copy
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/// of this software and associated documentation files (the "Software"), to deal
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/// in the Software without restriction, including without limitation the rights
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@@ -12,6 +12,10 @@
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/// The above copyright notice and this permission notice shall be included in
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/// all copies or substantial portions of the Software.
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///
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/// Restrictions:
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/// By making use of the Software for military purposes, you choose to make
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/// a Bunny unhappy.
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///
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/// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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/// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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/// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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@@ -33,8 +37,10 @@
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/// is preserved.
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///////////////////////////////////////////////////////////////////////////////////
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#include "../detail/type_int.hpp"
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#include <cmath>
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#include <cfloat>
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#include <limits>
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#if(GLM_COMPILER & GLM_COMPILER_VC)
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# pragma warning(push)
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@@ -58,34 +64,34 @@ typedef union
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} parts;
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} ieee_double_shape_type;
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#define GLM_EXTRACT_WORDS(ix0,ix1,d) \
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do { \
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ieee_double_shape_type ew_u; \
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ew_u.value = (d); \
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(ix0) = ew_u.parts.msw; \
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(ix1) = ew_u.parts.lsw; \
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#define GLM_EXTRACT_WORDS(ix0,ix1,d) \
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do { \
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ieee_double_shape_type ew_u; \
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ew_u.value = (d); \
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(ix0) = ew_u.parts.msw; \
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(ix1) = ew_u.parts.lsw; \
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} while (0)
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#define GLM_GET_FLOAT_WORD(i,d) \
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do { \
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ieee_float_shape_type gf_u; \
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gf_u.value = (d); \
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(i) = gf_u.word; \
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#define GLM_GET_FLOAT_WORD(i,d) \
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do { \
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ieee_float_shape_type gf_u; \
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gf_u.value = (d); \
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(i) = gf_u.word; \
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} while (0)
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#define GLM_SET_FLOAT_WORD(d,i) \
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do { \
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ieee_float_shape_type sf_u; \
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sf_u.word = (i); \
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(d) = sf_u.value; \
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#define GLM_SET_FLOAT_WORD(d,i) \
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do { \
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ieee_float_shape_type sf_u; \
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sf_u.word = (i); \
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(d) = sf_u.value; \
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} while (0)
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#define GLM_INSERT_WORDS(d,ix0,ix1) \
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do { \
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ieee_double_shape_type iw_u; \
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iw_u.parts.msw = (ix0); \
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iw_u.parts.lsw = (ix1); \
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(d) = iw_u.value; \
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#define GLM_INSERT_WORDS(d,ix0,ix1) \
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do { \
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ieee_double_shape_type iw_u; \
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iw_u.parts.msw = (ix0); \
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iw_u.parts.lsw = (ix1); \
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(d) = iw_u.value; \
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} while (0)
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namespace glm{
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@@ -98,28 +104,28 @@ namespace detail
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GLM_GET_FLOAT_WORD(hx, x);
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GLM_GET_FLOAT_WORD(hy, y);
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ix = hx&0x7fffffff; // |x|
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iy = hy&0x7fffffff; // |y|
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ix = hx&0x7fffffff; // |x|
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iy = hy&0x7fffffff; // |y|
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if((ix>0x7f800000) || // x is nan
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(iy>0x7f800000)) // y is nan
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if((ix>0x7f800000) || // x is nan
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(iy>0x7f800000)) // y is nan
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return x+y;
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if(x==y) return y; // x=y, return y
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if(ix==0) { // x == 0
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if(x==y) return y; // x=y, return y
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if(ix==0) { // x == 0
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GLM_SET_FLOAT_WORD(x,(hy&0x80000000)|1);// return +-minsubnormal
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t = x*x;
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if(t==x) return t; else return x; // raise underflow flag
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if(t==x) return t; else return x; // raise underflow flag
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}
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if(hx>=0) { // x > 0
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if(hx>hy) { // x > y, x -= ulp
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if(hx>=0) { // x > 0
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if(hx>hy) { // x > y, x -= ulp
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hx -= 1;
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} else { // x < y, x += ulp
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} else { // x < y, x += ulp
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hx += 1;
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}
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} else { // x < 0
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if(hy>=0||hx>hy){ // x < y, x -= ulp
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} else { // x < 0
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if(hy>=0||hx>hy){ // x < y, x -= ulp
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hx -= 1;
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} else { // x > y, x += ulp
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} else { // x > y, x += ulp
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hx += 1;
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}
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}
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@@ -192,50 +198,76 @@ namespace detail
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# pragma warning(pop)
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#endif
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#if((GLM_COMPILER & GLM_COMPILER_VC) || ((GLM_COMPILER & GLM_COMPILER_INTEL) && (GLM_PLATFORM & GLM_PLATFORM_WINDOWS)))
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# define GLM_NEXT_AFTER_FLT(x, toward) glm::detail::nextafterf((x), (toward))
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# define GLM_NEXT_AFTER_DBL(x, toward) _nextafter((x), (toward))
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#else
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# define GLM_NEXT_AFTER_FLT(x, toward) nextafterf((x), (toward))
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# define GLM_NEXT_AFTER_DBL(x, toward) nextafter((x), (toward))
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#endif
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namespace glm
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{
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template <>
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GLM_FUNC_QUALIFIER float next_float(float const & x)
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{
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return GLM_NEXT_AFTER_FLT(x, std::numeric_limits<float>::max());
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# if GLM_HAS_CXX11_STL
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return std::nextafter(x, std::numeric_limits<float>::max());
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# elif((GLM_COMPILER & GLM_COMPILER_VC) || ((GLM_COMPILER & GLM_COMPILER_INTEL) && (GLM_PLATFORM & GLM_PLATFORM_WINDOWS)))
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return detail::nextafterf(x, FLT_MAX);
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# elif(GLM_PLATFORM & GLM_PLATFORM_ANDROID)
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return __builtin_nextafterf(x, FLT_MAX);
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# else
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return nextafterf(x, FLT_MAX);
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# endif
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}
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template <>
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GLM_FUNC_QUALIFIER double next_float(double const & x)
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{
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return GLM_NEXT_AFTER_DBL(x, std::numeric_limits<double>::max());
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# if GLM_HAS_CXX11_STL
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return std::nextafter(x, std::numeric_limits<double>::max());
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# elif((GLM_COMPILER & GLM_COMPILER_VC) || ((GLM_COMPILER & GLM_COMPILER_INTEL) && (GLM_PLATFORM & GLM_PLATFORM_WINDOWS)))
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return detail::nextafter(x, std::numeric_limits<double>::max());
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# elif(GLM_PLATFORM & GLM_PLATFORM_ANDROID)
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return __builtin_nextafter(x, FLT_MAX);
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# else
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return nextafter(x, DBL_MAX);
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# endif
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}
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template<typename T, template<typename> class vecType>
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GLM_FUNC_QUALIFIER vecType<T> next_float(vecType<T> const & x)
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template<typename T, precision P, template<typename, precision> class vecType>
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GLM_FUNC_QUALIFIER vecType<T, P> next_float(vecType<T, P> const & x)
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{
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vecType<T> Result;
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for(std::size_t i = 0; i < Result.length(); ++i)
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vecType<T, P> Result(uninitialize);
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for(detail::component_count_t i = 0; i < detail::component_count(Result); ++i)
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Result[i] = next_float(x[i]);
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return Result;
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}
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GLM_FUNC_QUALIFIER float prev_float(float const & x)
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{
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return GLM_NEXT_AFTER_FLT(x, std::numeric_limits<float>::min());
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# if GLM_HAS_CXX11_STL
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return std::nextafter(x, std::numeric_limits<float>::min());
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# elif((GLM_COMPILER & GLM_COMPILER_VC) || ((GLM_COMPILER & GLM_COMPILER_INTEL) && (GLM_PLATFORM & GLM_PLATFORM_WINDOWS)))
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return detail::nextafterf(x, FLT_MIN);
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# elif(GLM_PLATFORM & GLM_PLATFORM_ANDROID)
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return __builtin_nextafterf(x, FLT_MIN);
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# else
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return nextafterf(x, FLT_MIN);
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# endif
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}
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GLM_FUNC_QUALIFIER double prev_float(double const & x)
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{
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return GLM_NEXT_AFTER_DBL(x, std::numeric_limits<double>::min());
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# if GLM_HAS_CXX11_STL
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return std::nextafter(x, std::numeric_limits<double>::min());
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# elif((GLM_COMPILER & GLM_COMPILER_VC) || ((GLM_COMPILER & GLM_COMPILER_INTEL) && (GLM_PLATFORM & GLM_PLATFORM_WINDOWS)))
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return _nextafter(x, DBL_MIN);
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# elif(GLM_PLATFORM & GLM_PLATFORM_ANDROID)
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return __builtin_nextafter(x, DBL_MIN);
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# else
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return nextafter(x, DBL_MIN);
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# endif
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}
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template<typename T, template<typename> class vecType>
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GLM_FUNC_QUALIFIER vecType<T> prev_float(vecType<T> const & x)
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template<typename T, precision P, template<typename, precision> class vecType>
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GLM_FUNC_QUALIFIER vecType<T, P> prev_float(vecType<T, P> const & x)
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{
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vecType<T> Result;
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for(std::size_t i = 0; i < Result.length(); ++i)
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vecType<T, P> Result(uninitialize);
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for(detail::component_count_t i = 0; i < detail::component_count(Result); ++i)
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Result[i] = prev_float(x[i]);
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return Result;
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}
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@@ -244,16 +276,16 @@ namespace glm
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GLM_FUNC_QUALIFIER T next_float(T const & x, uint const & ulps)
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{
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T temp = x;
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for(std::size_t i = 0; i < ulps; ++i)
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for(uint i = 0; i < ulps; ++i)
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temp = next_float(temp);
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return temp;
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}
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template<typename T, template<typename> class vecType>
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GLM_FUNC_QUALIFIER vecType<T> next_float(vecType<T> const & x, vecType<uint> const & ulps)
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template<typename T, precision P, template<typename, precision> class vecType>
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GLM_FUNC_QUALIFIER vecType<T, P> next_float(vecType<T, P> const & x, vecType<uint, P> const & ulps)
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{
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vecType<T> Result;
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for(std::size_t i = 0; i < Result.length(); ++i)
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vecType<T, P> Result(uninitialize);
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for(detail::component_count_t i = 0; i < detail::component_count(Result); ++i)
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Result[i] = next_float(x[i], ulps[i]);
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return Result;
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}
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@@ -262,16 +294,16 @@ namespace glm
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GLM_FUNC_QUALIFIER T prev_float(T const & x, uint const & ulps)
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{
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T temp = x;
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for(std::size_t i = 0; i < ulps; ++i)
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for(uint i = 0; i < ulps; ++i)
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temp = prev_float(temp);
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return temp;
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}
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template<typename T, template<typename> class vecType>
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GLM_FUNC_QUALIFIER vecType<T> prev_float(vecType<T> const & x, vecType<uint> const & ulps)
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template<typename T, precision P, template<typename, precision> class vecType>
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GLM_FUNC_QUALIFIER vecType<T, P> prev_float(vecType<T, P> const & x, vecType<uint, P> const & ulps)
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{
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vecType<T> Result;
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for(std::size_t i = 0; i < Result.length(); ++i)
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vecType<T, P> Result(uninitialize);
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for(detail::component_count_t i = 0; i < detail::component_count(Result); ++i)
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Result[i] = prev_float(x[i], ulps[i]);
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return Result;
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}
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@@ -284,7 +316,7 @@ namespace glm
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if(x < y)
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{
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T temp = x;
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while(temp != y && ulp < std::numeric_limits<std::size_t>::max())
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while(temp != y)// && ulp < std::numeric_limits<std::size_t>::max())
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{
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++ulp;
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temp = next_float(temp);
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@@ -293,7 +325,7 @@ namespace glm
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else if(y < x)
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{
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T temp = y;
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while(temp != x && ulp < std::numeric_limits<std::size_t>::max())
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while(temp != x)// && ulp < std::numeric_limits<std::size_t>::max())
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{
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++ulp;
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temp = next_float(temp);
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@@ -307,11 +339,11 @@ namespace glm
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return ulp;
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}
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template<typename T, template<typename> class vecType>
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GLM_FUNC_QUALIFIER vecType<uint> float_distance(vecType<T> const & x, vecType<T> const & y)
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template<typename T, precision P, template<typename, precision> class vecType>
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GLM_FUNC_QUALIFIER vecType<uint, P> float_distance(vecType<T, P> const & x, vecType<T, P> const & y)
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{
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vecType<uint> Result;
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for(std::size_t i = 0; i < Result.length(); ++i)
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vecType<uint, P> Result(uninitialize);
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for(detail::component_count_t i = 0; i < detail::component_count(Result); ++i)
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Result[i] = float_distance(x[i], y[i]);
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return Result;
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}
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