1 files changed, 368 insertions, 0 deletions
diff --git a/external/include/glm/detail/func_integer.inl b/external/include/glm/detail/func_integer.inl
new file mode 100644
index 0000000..25910eb
--- /dev/null
+++ b/external/include/glm/detail/func_integer.inl
@@ -0,0 +1,368 @@
+/// @ref core
+/// @file glm/detail/func_integer.inl
+
+#include "type_vec2.hpp"
+#include "type_vec3.hpp"
+#include "type_vec4.hpp"
+#include "type_int.hpp"
+#include "_vectorize.hpp"
+#if(GLM_ARCH & GLM_ARCH_X86 && GLM_COMPILER & GLM_COMPILER_VC)
+#	include <intrin.h>
+#	pragma intrinsic(_BitScanReverse)
+#endif//(GLM_ARCH & GLM_ARCH_X86 && GLM_COMPILER & GLM_COMPILER_VC)
+#include <limits>
+
+#if !GLM_HAS_EXTENDED_INTEGER_TYPE
+#	if GLM_COMPILER & GLM_COMPILER_GCC
+#		pragma GCC diagnostic ignored "-Wlong-long"
+#	endif
+#	if (GLM_COMPILER & GLM_COMPILER_CLANG)
+#		pragma clang diagnostic ignored "-Wc++11-long-long"
+#	endif
+#endif
+
+namespace glm{
+namespace detail
+{
+	template <typename T>
+	GLM_FUNC_QUALIFIER T mask(T Bits)
+	{
+		return Bits >= sizeof(T) * 8 ? ~static_cast<T>(0) : (static_cast<T>(1) << Bits) - static_cast<T>(1);
+	}
+
+	template <typename T, glm::precision P, template <typename, glm::precision> class vecType, bool Aligned, bool EXEC>
+	struct compute_bitfieldReverseStep
+	{
+		GLM_FUNC_QUALIFIER static vecType<T, P> call(vecType<T, P> const & v, T, T)
+		{
+			return v;
+		}
+	};
+
+	template <typename T, glm::precision P, template <typename, glm::precision> class vecType, bool Aligned>
+	struct compute_bitfieldReverseStep<T, P, vecType, Aligned, true>
+	{
+		GLM_FUNC_QUALIFIER static vecType<T, P> call(vecType<T, P> const & v, T Mask, T Shift)
+		{
+			return (v & Mask) << Shift | (v & (~Mask)) >> Shift;
+		}
+	};
+
+	template <typename T, glm::precision P, template <typename, glm::precision> class vecType, bool Aligned, bool EXEC>
+	struct compute_bitfieldBitCountStep
+	{
+		GLM_FUNC_QUALIFIER static vecType<T, P> call(vecType<T, P> const & v, T, T)
+		{
+			return v;
+		}
+	};
+
+	template <typename T, glm::precision P, template <typename, glm::precision> class vecType, bool Aligned>
+	struct compute_bitfieldBitCountStep<T, P, vecType, Aligned, true>
+	{
+		GLM_FUNC_QUALIFIER static vecType<T, P> call(vecType<T, P> const & v, T Mask, T Shift)
+		{
+			return (v & Mask) + ((v >> Shift) & Mask);
+		}
+	};
+
+	template <typename genIUType, size_t Bits>
+	struct compute_findLSB
+	{
+		GLM_FUNC_QUALIFIER static int call(genIUType Value)
+		{
+			if(Value == 0)
+				return -1;
+
+			return glm::bitCount(~Value & (Value - static_cast<genIUType>(1)));
+		}
+	};
+
+#	if GLM_HAS_BITSCAN_WINDOWS
+		template <typename genIUType>
+		struct compute_findLSB<genIUType, 32>
+		{
+			GLM_FUNC_QUALIFIER static int call(genIUType Value)
+			{
+				unsigned long Result(0);
+				unsigned char IsNotNull = _BitScanForward(&Result, *reinterpret_cast<unsigned long*>(&Value));
+				return IsNotNull ? int(Result) : -1;
+			}
+		};
+
+#		if !((GLM_COMPILER & GLM_COMPILER_VC) && (GLM_MODEL == GLM_MODEL_32))
+		template <typename genIUType>
+		struct compute_findLSB<genIUType, 64>
+		{
+			GLM_FUNC_QUALIFIER static int call(genIUType Value)
+			{
+				unsigned long Result(0);
+				unsigned char IsNotNull = _BitScanForward64(&Result, *reinterpret_cast<unsigned __int64*>(&Value));
+				return IsNotNull ? int(Result) : -1;
+			}
+		};
+#		endif
+#	endif//GLM_HAS_BITSCAN_WINDOWS
+
+	template <typename T, glm::precision P, template <class, glm::precision> class vecType, bool EXEC = true>
+	struct compute_findMSB_step_vec
+	{
+		GLM_FUNC_QUALIFIER static vecType<T, P> call(vecType<T, P> const & x, T Shift)
+		{
+			return x | (x >> Shift);
+		}
+	};
+
+	template <typename T, glm::precision P, template <typename, glm::precision> class vecType>
+	struct compute_findMSB_step_vec<T, P, vecType, false>
+	{
+		GLM_FUNC_QUALIFIER static vecType<T, P> call(vecType<T, P> const & x, T)
+		{
+			return x;
+		}
+	};
+
+	template <typename T, glm::precision P, template <typename, glm::precision> class vecType, int>
+	struct compute_findMSB_vec
+	{
+		GLM_FUNC_QUALIFIER static vecType<int, P> call(vecType<T, P> const & vec)
+		{
+			vecType<T, P> x(vec);
+			x = compute_findMSB_step_vec<T, P, vecType, sizeof(T) * 8 >=  8>::call(x, static_cast<T>( 1));
+			x = compute_findMSB_step_vec<T, P, vecType, sizeof(T) * 8 >=  8>::call(x, static_cast<T>( 2));
+			x = compute_findMSB_step_vec<T, P, vecType, sizeof(T) * 8 >=  8>::call(x, static_cast<T>( 4));
+			x = compute_findMSB_step_vec<T, P, vecType, sizeof(T) * 8 >= 16>::call(x, static_cast<T>( 8));
+			x = compute_findMSB_step_vec<T, P, vecType, sizeof(T) * 8 >= 32>::call(x, static_cast<T>(16));
+			x = compute_findMSB_step_vec<T, P, vecType, sizeof(T) * 8 >= 64>::call(x, static_cast<T>(32));
+			return vecType<int, P>(sizeof(T) * 8 - 1) - glm::bitCount(~x);
+		}
+	};
+
+#	if GLM_HAS_BITSCAN_WINDOWS
+		template <typename genIUType>
+		GLM_FUNC_QUALIFIER int compute_findMSB_32(genIUType Value)
+		{
+			unsigned long Result(0);
+			unsigned char IsNotNull = _BitScanReverse(&Result, *reinterpret_cast<unsigned long*>(&Value));
+			return IsNotNull ? int(Result) : -1;
+		}
+
+		template <typename T, glm::precision P, template<typename, glm::precision> class vecType>
+		struct compute_findMSB_vec<T, P, vecType, 32>
+		{
+			GLM_FUNC_QUALIFIER static vecType<int, P> call(vecType<T, P> const & x)
+			{
+				return detail::functor1<int, T, P, vecType>::call(compute_findMSB_32, x);
+			}
+		};
+
+#		if !((GLM_COMPILER & GLM_COMPILER_VC) && (GLM_MODEL == GLM_MODEL_32))
+		template <typename genIUType>
+		GLM_FUNC_QUALIFIER int compute_findMSB_64(genIUType Value)
+		{
+			unsigned long Result(0);
+			unsigned char IsNotNull = _BitScanReverse64(&Result, *reinterpret_cast<unsigned __int64*>(&Value));
+			return IsNotNull ? int(Result) : -1;
+		}
+
+		template <typename T, glm::precision P, template <class, glm::precision> class vecType>
+		struct compute_findMSB_vec<T, P, vecType, 64>
+		{
+			GLM_FUNC_QUALIFIER static vecType<int, P> call(vecType<T, P> const & x)
+			{
+				return detail::functor1<int, T, P, vecType>::call(compute_findMSB_64, x);
+			}
+		};
+#		endif
+#	endif//GLM_HAS_BITSCAN_WINDOWS
+}//namespace detail
+
+	// uaddCarry
+	GLM_FUNC_QUALIFIER uint uaddCarry(uint const & x, uint const & y, uint & Carry)
+	{
+		uint64 const Value64(static_cast<uint64>(x) + static_cast<uint64>(y));
+		uint64 const Max32((static_cast<uint64>(1) << static_cast<uint64>(32)) - static_cast<uint64>(1));
+		Carry = Value64 > Max32 ? 1u : 0u;
+		return static_cast<uint32>(Value64 % (Max32 + static_cast<uint64>(1)));
+	}
+
+	template <precision P, template <typename, precision> class vecType>
+	GLM_FUNC_QUALIFIER vecType<uint, P> uaddCarry(vecType<uint, P> const & x, vecType<uint, P> const & y, vecType<uint, P> & Carry)
+	{
+		vecType<uint64, P> Value64(vecType<uint64, P>(x) + vecType<uint64, P>(y));
+		vecType<uint64, P> Max32((static_cast<uint64>(1) << static_cast<uint64>(32)) - static_cast<uint64>(1));
+		Carry = mix(vecType<uint32, P>(0), vecType<uint32, P>(1), greaterThan(Value64, Max32));
+		return vecType<uint32,P>(Value64 % (Max32 + static_cast<uint64>(1)));
+	}
+
+	// usubBorrow
+	GLM_FUNC_QUALIFIER uint usubBorrow(uint const & x, uint const & y, uint & Borrow)
+	{
+		GLM_STATIC_ASSERT(sizeof(uint) == sizeof(uint32), "uint and uint32 size mismatch");
+
+		Borrow = x >= y ? static_cast<uint32>(0) : static_cast<uint32>(1);
+		if(y >= x)
+			return y - x;
+		else
+			return static_cast<uint32>((static_cast<int64>(1) << static_cast<int64>(32)) + (static_cast<int64>(y) - static_cast<int64>(x)));
+	}
+
+	template <precision P, template <typename, precision> class vecType>
+	GLM_FUNC_QUALIFIER vecType<uint, P> usubBorrow(vecType<uint, P> const & x, vecType<uint, P> const & y, vecType<uint, P> & Borrow)
+	{
+		Borrow = mix(vecType<uint, P>(1), vecType<uint, P>(0), greaterThanEqual(x, y));
+		vecType<uint, P> const YgeX(y - x);
+		vecType<uint, P> const XgeY(vecType<uint32, P>((static_cast<int64>(1) << static_cast<int64>(32)) + (vecType<int64, P>(y) - vecType<int64, P>(x))));
+		return mix(XgeY, YgeX, greaterThanEqual(y, x));
+	}
+
+	// umulExtended
+	GLM_FUNC_QUALIFIER void umulExtended(uint const & x, uint const & y, uint & msb, uint & lsb)
+	{
+		GLM_STATIC_ASSERT(sizeof(uint) == sizeof(uint32), "uint and uint32 size mismatch");
+
+		uint64 Value64 = static_cast<uint64>(x) * static_cast<uint64>(y);
+		msb = static_cast<uint>(Value64 >> static_cast<uint64>(32));
+		lsb = static_cast<uint>(Value64);
+	}
+
+	template <precision P, template <typename, precision> class vecType>
+	GLM_FUNC_QUALIFIER void umulExtended(vecType<uint, P> const & x, vecType<uint, P> const & y, vecType<uint, P> & msb, vecType<uint, P> & lsb)
+	{
+		GLM_STATIC_ASSERT(sizeof(uint) == sizeof(uint32), "uint and uint32 size mismatch");
+
+		vecType<uint64, P> Value64(vecType<uint64, P>(x) * vecType<uint64, P>(y));
+		msb = vecType<uint32, P>(Value64 >> static_cast<uint64>(32));
+		lsb = vecType<uint32, P>(Value64);
+	}
+
+	// imulExtended
+	GLM_FUNC_QUALIFIER void imulExtended(int x, int y, int & msb, int & lsb)
+	{
+		GLM_STATIC_ASSERT(sizeof(int) == sizeof(int32), "int and int32 size mismatch");
+
+		int64 Value64 = static_cast<int64>(x) * static_cast<int64>(y);
+		msb = static_cast<int>(Value64 >> static_cast<int64>(32));
+		lsb = static_cast<int>(Value64);
+	}
+
+	template <precision P, template <typename, precision> class vecType>
+	GLM_FUNC_QUALIFIER void imulExtended(vecType<int, P> const & x, vecType<int, P> const & y, vecType<int, P> & msb, vecType<int, P> & lsb)
+	{
+		GLM_STATIC_ASSERT(sizeof(int) == sizeof(int32), "int and int32 size mismatch");
+
+		vecType<int64, P> Value64(vecType<int64, P>(x) * vecType<int64, P>(y));
+		lsb = vecType<int32, P>(Value64 & static_cast<int64>(0xFFFFFFFF));
+		msb = vecType<int32, P>((Value64 >> static_cast<int64>(32)) & static_cast<int64>(0xFFFFFFFF));
+	}
+
+	// bitfieldExtract
+	template <typename genIUType>
+	GLM_FUNC_QUALIFIER genIUType bitfieldExtract(genIUType Value, int Offset, int Bits)
+	{
+		return bitfieldExtract(tvec1<genIUType>(Value), Offset, Bits).x;
+	}
+
+	template <typename T, precision P, template <typename, precision> class vecType>
+	GLM_FUNC_QUALIFIER vecType<T, P> bitfieldExtract(vecType<T, P> const & Value, int Offset, int Bits)
+	{
+		GLM_STATIC_ASSERT(std::numeric_limits<T>::is_integer, "'bitfieldExtract' only accept integer inputs");
+
+		return (Value >> static_cast<T>(Offset)) & static_cast<T>(detail::mask(Bits));
+	}
+
+	// bitfieldInsert
+	template <typename genIUType>
+	GLM_FUNC_QUALIFIER genIUType bitfieldInsert(genIUType const & Base, genIUType const & Insert, int Offset, int Bits)
+	{
+		return bitfieldInsert(tvec1<genIUType>(Base), tvec1<genIUType>(Insert), Offset, Bits).x;
+	}
+
+	template <typename T, precision P, template <typename, precision> class vecType>
+	GLM_FUNC_QUALIFIER vecType<T, P> bitfieldInsert(vecType<T, P> const & Base, vecType<T, P> const & Insert, int Offset, int Bits)
+	{
+		GLM_STATIC_ASSERT(std::numeric_limits<T>::is_integer, "'bitfieldInsert' only accept integer values");
+
+		T const Mask = static_cast<T>(detail::mask(Bits) << Offset);
+		return (Base & ~Mask) | (Insert & Mask);
+	}
+
+	// bitfieldReverse
+	template <typename genType>
+	GLM_FUNC_QUALIFIER genType bitfieldReverse(genType x)
+	{
+		return bitfieldReverse(glm::tvec1<genType, glm::defaultp>(x)).x;
+	}
+
+	template <typename T, glm::precision P, template <typename, glm::precision> class vecType>
+	GLM_FUNC_QUALIFIER vecType<T, P> bitfieldReverse(vecType<T, P> const & v)
+	{
+		vecType<T, P> x(v);
+		x = detail::compute_bitfieldReverseStep<T, P, vecType, detail::is_aligned<P>::value, sizeof(T) * 8>=  2>::call(x, T(0x5555555555555555ull), static_cast<T>( 1));
+		x = detail::compute_bitfieldReverseStep<T, P, vecType, detail::is_aligned<P>::value, sizeof(T) * 8>=  4>::call(x, T(0x3333333333333333ull), static_cast<T>( 2));
+		x = detail::compute_bitfieldReverseStep<T, P, vecType, detail::is_aligned<P>::value, sizeof(T) * 8>=  8>::call(x, T(0x0F0F0F0F0F0F0F0Full), static_cast<T>( 4));
+		x = detail::compute_bitfieldReverseStep<T, P, vecType, detail::is_aligned<P>::value, sizeof(T) * 8>= 16>::call(x, T(0x00FF00FF00FF00FFull), static_cast<T>( 8));
+		x = detail::compute_bitfieldReverseStep<T, P, vecType, detail::is_aligned<P>::value, sizeof(T) * 8>= 32>::call(x, T(0x0000FFFF0000FFFFull), static_cast<T>(16));
+		x = detail::compute_bitfieldReverseStep<T, P, vecType, detail::is_aligned<P>::value, sizeof(T) * 8>= 64>::call(x, T(0x00000000FFFFFFFFull), static_cast<T>(32));
+		return x;
+	}
+
+	// bitCount
+	template <typename genType>
+	GLM_FUNC_QUALIFIER int bitCount(genType x)
+	{
+		return bitCount(glm::tvec1<genType, glm::defaultp>(x)).x;
+	}
+
+	template <typename T, glm::precision P, template <typename, glm::precision> class vecType>
+	GLM_FUNC_QUALIFIER vecType<int, P> bitCount(vecType<T, P> const & v)
+	{
+		vecType<typename detail::make_unsigned<T>::type, P> x(*reinterpret_cast<vecType<typename detail::make_unsigned<T>::type, P> const *>(&v));
+		x = detail::compute_bitfieldBitCountStep<typename detail::make_unsigned<T>::type, P, vecType, detail::is_aligned<P>::value, sizeof(T) * 8>=  2>::call(x, typename detail::make_unsigned<T>::type(0x5555555555555555ull), typename detail::make_unsigned<T>::type( 1));
+		x = detail::compute_bitfieldBitCountStep<typename detail::make_unsigned<T>::type, P, vecType, detail::is_aligned<P>::value, sizeof(T) * 8>=  4>::call(x, typename detail::make_unsigned<T>::type(0x3333333333333333ull), typename detail::make_unsigned<T>::type( 2));
+		x = detail::compute_bitfieldBitCountStep<typename detail::make_unsigned<T>::type, P, vecType, detail::is_aligned<P>::value, sizeof(T) * 8>=  8>::call(x, typename detail::make_unsigned<T>::type(0x0F0F0F0F0F0F0F0Full), typename detail::make_unsigned<T>::type( 4));
+		x = detail::compute_bitfieldBitCountStep<typename detail::make_unsigned<T>::type, P, vecType, detail::is_aligned<P>::value, sizeof(T) * 8>= 16>::call(x, typename detail::make_unsigned<T>::type(0x00FF00FF00FF00FFull), typename detail::make_unsigned<T>::type( 8));
+		x = detail::compute_bitfieldBitCountStep<typename detail::make_unsigned<T>::type, P, vecType, detail::is_aligned<P>::value, sizeof(T) * 8>= 32>::call(x, typename detail::make_unsigned<T>::type(0x0000FFFF0000FFFFull), typename detail::make_unsigned<T>::type(16));
+		x = detail::compute_bitfieldBitCountStep<typename detail::make_unsigned<T>::type, P, vecType, detail::is_aligned<P>::value, sizeof(T) * 8>= 64>::call(x, typename detail::make_unsigned<T>::type(0x00000000FFFFFFFFull), typename detail::make_unsigned<T>::type(32));
+		return vecType<int, P>(x);
+	}
+
+	// findLSB
+	template <typename genIUType>
+	GLM_FUNC_QUALIFIER int findLSB(genIUType Value)
+	{
+		GLM_STATIC_ASSERT(std::numeric_limits<genIUType>::is_integer, "'findLSB' only accept integer values");
+
+		return detail::compute_findLSB<genIUType, sizeof(genIUType) * 8>::call(Value);
+	}
+
+	template <typename T, precision P, template <typename, precision> class vecType>
+	GLM_FUNC_QUALIFIER vecType<int, P> findLSB(vecType<T, P> const & x)
+	{
+		GLM_STATIC_ASSERT(std::numeric_limits<T>::is_integer, "'findLSB' only accept integer values");
+
+		return detail::functor1<int, T, P, vecType>::call(findLSB, x);
+	}
+
+	// findMSB
+	template <typename genIUType>
+	GLM_FUNC_QUALIFIER int findMSB(genIUType x)
+	{
+		GLM_STATIC_ASSERT(std::numeric_limits<genIUType>::is_integer, "'findMSB' only accept integer values");
+
+		return findMSB(tvec1<genIUType>(x)).x;
+	}
+
+	template <typename T, precision P, template <typename, precision> class vecType>
+	GLM_FUNC_QUALIFIER vecType<int, P> findMSB(vecType<T, P> const & x)
+	{
+		GLM_STATIC_ASSERT(std::numeric_limits<T>::is_integer, "'findMSB' only accept integer values");
+
+		return detail::compute_findMSB_vec<T, P, vecType, sizeof(T) * 8>::call(x);
+	}
+}//namespace glm
+
+#if GLM_ARCH != GLM_ARCH_PURE && GLM_HAS_UNRESTRICTED_UNIONS
+#	include "func_integer_simd.inl"
+#endif
+