diff options
author | jjesswan <jessica_wan@brown.edu> | 2024-05-07 06:03:03 -0400 |
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committer | jjesswan <jessica_wan@brown.edu> | 2024-05-07 06:03:03 -0400 |
commit | 675391d07f50d0067e7bab983433c6d86f5f8256 (patch) | |
tree | 65a857125b91502974bceb40e24c1c7eff4bad59 /glm-master/test/core/core_func_integer.cpp | |
parent | 6a45579dbbf991c0e12ce59958e3b533d19fc9d4 (diff) |
remove glm
Diffstat (limited to 'glm-master/test/core/core_func_integer.cpp')
-rw-r--r-- | glm-master/test/core/core_func_integer.cpp | 1556 |
1 files changed, 0 insertions, 1556 deletions
diff --git a/glm-master/test/core/core_func_integer.cpp b/glm-master/test/core/core_func_integer.cpp deleted file mode 100644 index 95d650c..0000000 --- a/glm-master/test/core/core_func_integer.cpp +++ /dev/null @@ -1,1556 +0,0 @@ -#include <glm/integer.hpp> -#include <glm/vector_relational.hpp> -#include <glm/ext/vector_int1.hpp> -#include <glm/ext/vector_int2.hpp> -#include <glm/ext/vector_int3.hpp> -#include <glm/ext/vector_int4.hpp> -#include <glm/ext/vector_uint1.hpp> -#include <glm/ext/vector_uint2.hpp> -#include <glm/ext/vector_uint3.hpp> -#include <glm/ext/vector_uint4.hpp> -#include <glm/ext/scalar_int_sized.hpp> -#include <glm/ext/scalar_uint_sized.hpp> -#include <vector> -#include <ctime> -#include <cstdio> - -enum result -{ - SUCCESS, - FAIL, - ASSERT, - STATIC_ASSERT -}; - -namespace bitfieldInsert -{ - template<typename genType> - struct type - { - genType Base; - genType Insert; - int Offset; - int Bits; - genType Return; - }; - - typedef type<glm::uint> typeU32; - - typeU32 const Data32[] = - { - {0x00000000, 0xffffffff, 0, 32, 0xffffffff}, - {0x00000000, 0xffffffff, 0, 31, 0x7fffffff}, - {0x00000000, 0xffffffff, 0, 0, 0x00000000}, - {0xff000000, 0x000000ff, 8, 8, 0xff00ff00}, - {0xffff0000, 0xffff0000, 16, 16, 0x00000000}, - {0x0000ffff, 0x0000ffff, 16, 16, 0xffffffff} - }; - - static int test() - { - int Error = 0; - glm::uint count = sizeof(Data32) / sizeof(typeU32); - - for(glm::uint i = 0; i < count; ++i) - { - glm::uint Return = glm::bitfieldInsert( - Data32[i].Base, - Data32[i].Insert, - Data32[i].Offset, - Data32[i].Bits); - - Error += Data32[i].Return == Return ? 0 : 1; - } - - return Error; - } -}//bitfieldInsert - -namespace bitfieldExtract -{ - template<typename genType> - struct type - { - genType Value; - int Offset; - int Bits; - genType Return; - result Result; - }; - - typedef type<glm::uint> typeU32; - - typeU32 const Data32[] = - { - {0xffffffff, 0,32, 0xffffffff, SUCCESS}, - {0xffffffff, 8, 0, 0x00000000, SUCCESS}, - {0x00000000, 0,32, 0x00000000, SUCCESS}, - {0x0f0f0f0f, 0,32, 0x0f0f0f0f, SUCCESS}, - {0x00000000, 8, 0, 0x00000000, SUCCESS}, - {0x80000000,31, 1, 0x00000001, SUCCESS}, - {0x7fffffff,31, 1, 0x00000000, SUCCESS}, - {0x00000300, 8, 8, 0x00000003, SUCCESS}, - {0x0000ff00, 8, 8, 0x000000ff, SUCCESS}, - {0xfffffff0, 0, 5, 0x00000010, SUCCESS}, - {0x000000ff, 1, 3, 0x00000007, SUCCESS}, - {0x000000ff, 0, 3, 0x00000007, SUCCESS}, - {0x00000000, 0, 2, 0x00000000, SUCCESS}, - {0xffffffff, 0, 8, 0x000000ff, SUCCESS}, - {0xffff0000,16,16, 0x0000ffff, SUCCESS}, - {0xfffffff0, 0, 8, 0x00000000, FAIL}, - {0xffffffff,16,16, 0x00000000, FAIL}, - //{0xffffffff,32, 1, 0x00000000, ASSERT}, // Throw an assert - //{0xffffffff, 0,33, 0x00000000, ASSERT}, // Throw an assert - //{0xffffffff,16,16, 0x00000000, ASSERT}, // Throw an assert - }; - - static int test() - { - int Error = 0; - - glm::uint count = sizeof(Data32) / sizeof(typeU32); - - for(glm::uint i = 0; i < count; ++i) - { - glm::uint Return = glm::bitfieldExtract( - Data32[i].Value, - Data32[i].Offset, - Data32[i].Bits); - - bool Compare = Data32[i].Return == Return; - - if(Data32[i].Result == SUCCESS && Compare) - continue; - else if(Data32[i].Result == FAIL && !Compare) - continue; - - Error += 1; - } - - return Error; - } -}//extractField - -namespace bitfieldReverse -{ -/* - GLM_FUNC_QUALIFIER unsigned int bitfieldReverseLoop(unsigned int v) - { - unsigned int Result(0); - unsigned int const BitSize = static_cast<unsigned int>(sizeof(unsigned int) * 8); - for(unsigned int i = 0; i < BitSize; ++i) - { - unsigned int const BitSet(v & (static_cast<unsigned int>(1) << i)); - unsigned int const BitFirst(BitSet >> i); - Result |= BitFirst << (BitSize - 1 - i); - } - return Result; - } - - GLM_FUNC_QUALIFIER glm::uint64_t bitfieldReverseLoop(glm::uint64_t v) - { - glm::uint64_t Result(0); - glm::uint64_t const BitSize = static_cast<glm::uint64_t>(sizeof(unsigned int) * 8); - for(glm::uint64_t i = 0; i < BitSize; ++i) - { - glm::uint64_t const BitSet(v & (static_cast<glm::uint64_t>(1) << i)); - glm::uint64_t const BitFirst(BitSet >> i); - Result |= BitFirst << (BitSize - 1 - i); - } - return Result; - } -*/ - template<glm::length_t L, typename T, glm::qualifier Q> - GLM_FUNC_QUALIFIER glm::vec<L, T, Q> bitfieldReverseLoop(glm::vec<L, T, Q> const& v) - { - GLM_STATIC_ASSERT(std::numeric_limits<T>::is_integer, "'bitfieldReverse' only accept integer values"); - - glm::vec<L, T, Q> Result(0); - T const BitSize = static_cast<T>(sizeof(T) * 8); - for(T i = 0; i < BitSize; ++i) - { - glm::vec<L, T, Q> const BitSet(v & (static_cast<T>(1) << i)); - glm::vec<L, T, Q> const BitFirst(BitSet >> i); - Result |= BitFirst << (BitSize - 1 - i); - } - return Result; - } - - template<typename T> - GLM_FUNC_QUALIFIER T bitfieldReverseLoop(T v) - { - return bitfieldReverseLoop(glm::vec<1, T>(v)).x; - } - - GLM_FUNC_QUALIFIER glm::uint32 bitfieldReverseUint32(glm::uint32 x) - { - x = (x & 0x55555555) << 1 | (x & 0xAAAAAAAA) >> 1; - x = (x & 0x33333333) << 2 | (x & 0xCCCCCCCC) >> 2; - x = (x & 0x0F0F0F0F) << 4 | (x & 0xF0F0F0F0) >> 4; - x = (x & 0x00FF00FF) << 8 | (x & 0xFF00FF00) >> 8; - x = (x & 0x0000FFFF) << 16 | (x & 0xFFFF0000) >> 16; - return x; - } - - GLM_FUNC_QUALIFIER glm::uint64 bitfieldReverseUint64(glm::uint64 x) - { - x = (x & 0x5555555555555555) << 1 | (x & 0xAAAAAAAAAAAAAAAA) >> 1; - x = (x & 0x3333333333333333) << 2 | (x & 0xCCCCCCCCCCCCCCCC) >> 2; - x = (x & 0x0F0F0F0F0F0F0F0F) << 4 | (x & 0xF0F0F0F0F0F0F0F0) >> 4; - x = (x & 0x00FF00FF00FF00FF) << 8 | (x & 0xFF00FF00FF00FF00) >> 8; - x = (x & 0x0000FFFF0000FFFF) << 16 | (x & 0xFFFF0000FFFF0000) >> 16; - x = (x & 0x00000000FFFFFFFF) << 32 | (x & 0xFFFFFFFF00000000) >> 32; - return x; - } - - template<bool EXEC = false> - struct compute_bitfieldReverseStep - { - template<glm::length_t L, typename T, glm::qualifier Q> - GLM_FUNC_QUALIFIER static glm::vec<L, T, Q> call(glm::vec<L, T, Q> const& v, T, T) - { - return v; - } - }; - - template<> - struct compute_bitfieldReverseStep<true> - { - template<glm::length_t L, typename T, glm::qualifier Q> - GLM_FUNC_QUALIFIER static glm::vec<L, T, Q> call(glm::vec<L, T, Q> const& v, T Mask, T Shift) - { - return (v & Mask) << Shift | (v & (~Mask)) >> Shift; - } - }; - - template<glm::length_t L, typename T, glm::qualifier Q> - GLM_FUNC_QUALIFIER glm::vec<L, T, Q> bitfieldReverseOps(glm::vec<L, T, Q> const& v) - { - glm::vec<L, T, Q> x(v); - x = compute_bitfieldReverseStep<sizeof(T) * 8 >= 2>::call(x, static_cast<T>(0x5555555555555555ull), static_cast<T>( 1)); - x = compute_bitfieldReverseStep<sizeof(T) * 8 >= 4>::call(x, static_cast<T>(0x3333333333333333ull), static_cast<T>( 2)); - x = compute_bitfieldReverseStep<sizeof(T) * 8 >= 8>::call(x, static_cast<T>(0x0F0F0F0F0F0F0F0Full), static_cast<T>( 4)); - x = compute_bitfieldReverseStep<sizeof(T) * 8 >= 16>::call(x, static_cast<T>(0x00FF00FF00FF00FFull), static_cast<T>( 8)); - x = compute_bitfieldReverseStep<sizeof(T) * 8 >= 32>::call(x, static_cast<T>(0x0000FFFF0000FFFFull), static_cast<T>(16)); - x = compute_bitfieldReverseStep<sizeof(T) * 8 >= 64>::call(x, static_cast<T>(0x00000000FFFFFFFFull), static_cast<T>(32)); - return x; - } - - template<typename genType> - GLM_FUNC_QUALIFIER genType bitfieldReverseOps(genType x) - { - return bitfieldReverseOps(glm::vec<1, genType, glm::defaultp>(x)).x; - } - - template<typename genType> - struct type - { - genType Value; - genType Return; - result Result; - }; - - typedef type<glm::uint> typeU32; - - typeU32 const Data32[] = - { - {0x00000001, 0x80000000, SUCCESS}, - {0x0000000f, 0xf0000000, SUCCESS}, - {0x000000ff, 0xff000000, SUCCESS}, - {0xf0000000, 0x0000000f, SUCCESS}, - {0xff000000, 0x000000ff, SUCCESS}, - {0xffffffff, 0xffffffff, SUCCESS}, - {0x00000000, 0x00000000, SUCCESS} - }; - - typedef type<glm::uint64> typeU64; - - typeU64 const Data64[] = - { - {0x00000000000000ff, 0xff00000000000000, SUCCESS}, - {0x000000000000000f, 0xf000000000000000, SUCCESS}, - {0xf000000000000000, 0x000000000000000f, SUCCESS}, - {0xffffffffffffffff, 0xffffffffffffffff, SUCCESS}, - {0x0000000000000000, 0x0000000000000000, SUCCESS} - }; - - static int test32_bitfieldReverse() - { - int Error = 0; - std::size_t const Count = sizeof(Data32) / sizeof(typeU32); - - for(std::size_t i = 0; i < Count; ++i) - { - glm::uint Return = glm::bitfieldReverse(Data32[i].Value); - - bool Compare = Data32[i].Return == Return; - - if(Data32[i].Result == SUCCESS) - Error += Compare ? 0 : 1; - else - Error += Compare ? 1 : 0; - } - - return Error; - } - - static int test32_bitfieldReverseLoop() - { - int Error = 0; - std::size_t const Count = sizeof(Data32) / sizeof(typeU32); - - for(std::size_t i = 0; i < Count; ++i) - { - glm::uint Return = bitfieldReverseLoop(Data32[i].Value); - - bool Compare = Data32[i].Return == Return; - - if(Data32[i].Result == SUCCESS) - Error += Compare ? 0 : 1; - else - Error += Compare ? 1 : 0; - } - - return Error; - } - - static int test32_bitfieldReverseUint32() - { - int Error = 0; - std::size_t const Count = sizeof(Data32) / sizeof(typeU32); - - for(std::size_t i = 0; i < Count; ++i) - { - glm::uint Return = bitfieldReverseUint32(Data32[i].Value); - - bool Compare = Data32[i].Return == Return; - - if(Data32[i].Result == SUCCESS) - Error += Compare ? 0 : 1; - else - Error += Compare ? 1 : 0; - } - - return Error; - } - - static int test32_bitfieldReverseOps() - { - int Error = 0; - std::size_t const Count = sizeof(Data32) / sizeof(typeU32); - - for(std::size_t i = 0; i < Count; ++i) - { - glm::uint Return = bitfieldReverseOps(Data32[i].Value); - - bool Compare = Data32[i].Return == Return; - - if(Data32[i].Result == SUCCESS) - Error += Compare ? 0 : 1; - else - Error += Compare ? 1 : 0; - } - - return Error; - } - - static int test64_bitfieldReverse() - { - int Error = 0; - std::size_t const Count = sizeof(Data64) / sizeof(typeU64); - - for(std::size_t i = 0; i < Count; ++i) - { - glm::uint64 Return = glm::bitfieldReverse(Data64[i].Value); - - bool Compare = Data64[i].Return == Return; - - if(Data64[i].Result == SUCCESS) - Error += Compare ? 0 : 1; - else - Error += Compare ? 1 : 0; - } - - return Error; - } - - static int test64_bitfieldReverseLoop() - { - int Error = 0; - std::size_t const Count = sizeof(Data64) / sizeof(typeU64); - - for(std::size_t i = 0; i < Count; ++i) - { - glm::uint64 Return = bitfieldReverseLoop(Data64[i].Value); - - bool Compare = Data64[i].Return == Return; - - if(Data32[i].Result == SUCCESS) - Error += Compare ? 0 : 1; - else - Error += Compare ? 1 : 0; - } - - return Error; - } - - static int test64_bitfieldReverseUint64() - { - int Error = 0; - std::size_t const Count = sizeof(Data64) / sizeof(typeU64); - - for(std::size_t i = 0; i < Count; ++i) - { - glm::uint64 Return = bitfieldReverseUint64(Data64[i].Value); - - bool Compare = Data64[i].Return == Return; - - if(Data64[i].Result == SUCCESS) - Error += Compare ? 0 : 1; - else - Error += Compare ? 1 : 0; - } - - return Error; - } - - static int test64_bitfieldReverseOps() - { - int Error = 0; - std::size_t const Count = sizeof(Data64) / sizeof(typeU64); - - for(std::size_t i = 0; i < Count; ++i) - { - glm::uint64 Return = bitfieldReverseOps(Data64[i].Value); - - bool Compare = Data64[i].Return == Return; - - if(Data64[i].Result == SUCCESS) - Error += Compare ? 0 : 1; - else - Error += Compare ? 1 : 0; - } - - return Error; - } - - static int test() - { - int Error = 0; - - Error += test32_bitfieldReverse(); - Error += test32_bitfieldReverseLoop(); - Error += test32_bitfieldReverseUint32(); - Error += test32_bitfieldReverseOps(); - - Error += test64_bitfieldReverse(); - Error += test64_bitfieldReverseLoop(); - Error += test64_bitfieldReverseUint64(); - Error += test64_bitfieldReverseOps(); - - return Error; - } - - static int perf32(glm::uint32 Count) - { - int Error = 0; - - std::vector<glm::uint32> Data; - Data.resize(static_cast<std::size_t>(Count)); - - std::clock_t Timestamps0 = std::clock(); - - for(glm::uint32 k = 0; k < Count; ++k) - Data[k] = glm::bitfieldReverse(k); - - std::clock_t Timestamps1 = std::clock(); - - for(glm::uint32 k = 0; k < Count; ++k) - Data[k] = bitfieldReverseLoop(k); - - std::clock_t Timestamps2 = std::clock(); - - for(glm::uint32 k = 0; k < Count; ++k) - Data[k] = bitfieldReverseUint32(k); - - std::clock_t Timestamps3 = std::clock(); - - for(glm::uint32 k = 0; k < Count; ++k) - Data[k] = bitfieldReverseOps(k); - - std::clock_t Timestamps4 = std::clock(); - - std::printf("glm::bitfieldReverse: %d clocks\n", static_cast<int>(Timestamps1 - Timestamps0)); - std::printf("bitfieldReverseLoop: %d clocks\n", static_cast<int>(Timestamps2 - Timestamps1)); - std::printf("bitfieldReverseUint32: %d clocks\n", static_cast<int>(Timestamps3 - Timestamps2)); - std::printf("bitfieldReverseOps: %d clocks\n", static_cast<int>(Timestamps4 - Timestamps3)); - - return Error; - } - - static int perf64(glm::uint64 Count) - { - int Error = 0; - - std::vector<glm::uint64> Data; - Data.resize(static_cast<std::size_t>(Count)); - - std::clock_t Timestamps0 = std::clock(); - - for(glm::uint64 k = 0; k < Count; ++k) - Data[static_cast<std::size_t>(k)] = glm::bitfieldReverse(k); - - std::clock_t Timestamps1 = std::clock(); - - for(glm::uint64 k = 0; k < Count; ++k) - Data[static_cast<std::size_t>(k)] = bitfieldReverseLoop<glm::uint64>(k); - - std::clock_t Timestamps2 = std::clock(); - - for(glm::uint64 k = 0; k < Count; ++k) - Data[static_cast<std::size_t>(k)] = bitfieldReverseUint64(k); - - std::clock_t Timestamps3 = std::clock(); - - for(glm::uint64 k = 0; k < Count; ++k) - Data[static_cast<std::size_t>(k)] = bitfieldReverseOps(k); - - std::clock_t Timestamps4 = std::clock(); - - std::printf("glm::bitfieldReverse - 64: %d clocks\n", static_cast<int>(Timestamps1 - Timestamps0)); - std::printf("bitfieldReverseLoop - 64: %d clocks\n", static_cast<int>(Timestamps2 - Timestamps1)); - std::printf("bitfieldReverseUint - 64: %d clocks\n", static_cast<int>(Timestamps3 - Timestamps2)); - std::printf("bitfieldReverseOps - 64: %d clocks\n", static_cast<int>(Timestamps4 - Timestamps3)); - - return Error; - } - - static int perf(std::size_t Samples) - { - int Error = 0; - - Error += perf32(static_cast<glm::uint32>(Samples)); - Error += perf64(static_cast<glm::uint64>(Samples)); - - return Error; - } -}//bitfieldReverse - -namespace findMSB -{ - template<typename genType, typename retType> - struct type - { - genType Value; - retType Return; - }; - -# if GLM_HAS_BITSCAN_WINDOWS - template<typename genIUType> - static int findMSB_intrinsic(genIUType Value) - { - GLM_STATIC_ASSERT(std::numeric_limits<genIUType>::is_integer, "'findMSB' only accept integer values"); - - if(Value == 0) - return -1; - - unsigned long Result(0); - _BitScanReverse(&Result, Value); - return int(Result); - } -# endif//GLM_HAS_BITSCAN_WINDOWS - -# if GLM_ARCH & GLM_ARCH_AVX && GLM_COMPILER & GLM_COMPILER_VC - template<typename genIUType> - static int findMSB_avx(genIUType Value) - { - GLM_STATIC_ASSERT(std::numeric_limits<genIUType>::is_integer, "'findMSB' only accept integer values"); - - if(Value == 0) - return -1; - - return int(_tzcnt_u32(Value)); - } -# endif//GLM_ARCH & GLM_ARCH_AVX && GLM_PLATFORM & GLM_PLATFORM_WINDOWS - - template<typename genIUType> - static int findMSB_095(genIUType Value) - { - GLM_STATIC_ASSERT(std::numeric_limits<genIUType>::is_integer, "'findMSB' only accept integer values"); - - if(Value == genIUType(0) || Value == genIUType(-1)) - return -1; - else if(Value > 0) - { - genIUType Bit = genIUType(-1); - for(genIUType tmp = Value; tmp > 0; tmp >>= 1, ++Bit){} - return static_cast<int>(Bit); - } - else //if(Value < 0) - { - int const BitCount(sizeof(genIUType) * 8); - int MostSignificantBit(-1); - for(int BitIndex(0); BitIndex < BitCount; ++BitIndex) - MostSignificantBit = (Value & (1 << BitIndex)) ? MostSignificantBit : BitIndex; - assert(MostSignificantBit >= 0); - return MostSignificantBit; - } - } - - template<typename genIUType> - static int findMSB_nlz1(genIUType x) - { - GLM_STATIC_ASSERT(std::numeric_limits<genIUType>::is_integer, "'findMSB' only accept integer values"); - - if (x == 0) - return -1; - - int n = 0; - if (x <= 0x0000FFFF) {n = n +16; x = x <<16;} - if (x <= 0x00FFFFFF) {n = n + 8; x = x << 8;} - if (x <= 0x0FFFFFFF) {n = n + 4; x = x << 4;} - if (x <= 0x3FFFFFFF) {n = n + 2; x = x << 2;} - if (x <= 0x7FFFFFFF) {n = n + 1;} - return 31 - n; - } - - static int findMSB_nlz2(unsigned int x) - { - unsigned int y; - int n = 32; - - y = x >>16; if (y != 0) {n = n -16; x = y;} - y = x >> 8; if (y != 0) {n = n - 8; x = y;} - y = x >> 4; if (y != 0) {n = n - 4; x = y;} - y = x >> 2; if (y != 0) {n = n - 2; x = y;} - y = x >> 1; if (y != 0) return n - 2; - return 32 - (n - static_cast<int>(x)); - } - - static int findMSB_pop(unsigned int x) - { - x = x | (x >> 1); - x = x | (x >> 2); - x = x | (x >> 4); - x = x | (x >> 8); - x = x | (x >>16); - return 31 - glm::bitCount(~x); - } - - static int perf_int(std::size_t Count) - { - type<int, int> const Data[] = - { - {0x00000000, -1}, - {0x00000001, 0}, - {0x00000002, 1}, - {0x00000003, 1}, - {0x00000004, 2}, - {0x00000005, 2}, - {0x00000007, 2}, - {0x00000008, 3}, - {0x00000010, 4}, - {0x00000020, 5}, - {0x00000040, 6}, - {0x00000080, 7}, - {0x00000100, 8}, - {0x00000200, 9}, - {0x00000400, 10}, - {0x00000800, 11}, - {0x00001000, 12}, - {0x00002000, 13}, - {0x00004000, 14}, - {0x00008000, 15}, - {0x00010000, 16}, - {0x00020000, 17}, - {0x00040000, 18}, - {0x00080000, 19}, - {0x00100000, 20}, - {0x00200000, 21}, - {0x00400000, 22}, - {0x00800000, 23}, - {0x01000000, 24}, - {0x02000000, 25}, - {0x04000000, 26}, - {0x08000000, 27}, - {0x10000000, 28}, - {0x20000000, 29}, - {0x40000000, 30} - }; - - int Error(0); - - std::clock_t Timestamps0 = std::clock(); - - for(std::size_t k = 0; k < Count; ++k) - for(std::size_t i = 0; i < sizeof(Data) / sizeof(type<int, int>); ++i) - { - int Result = glm::findMSB(Data[i].Value); - Error += Data[i].Return == Result ? 0 : 1; - } - - std::clock_t Timestamps1 = std::clock(); - - for(std::size_t k = 0; k < Count; ++k) - for(std::size_t i = 0; i < sizeof(Data) / sizeof(type<int, int>); ++i) - { - int Result = findMSB_nlz1(Data[i].Value); - Error += Data[i].Return == Result ? 0 : 1; - } - - std::clock_t Timestamps2 = std::clock(); - - for(std::size_t k = 0; k < Count; ++k) - for(std::size_t i = 0; i < sizeof(Data) / sizeof(type<int, int>); ++i) - { - int Result = findMSB_nlz2(static_cast<unsigned int>(Data[i].Value)); - Error += Data[i].Return == Result ? 0 : 1; - } - - std::clock_t Timestamps3 = std::clock(); - - for(std::size_t k = 0; k < Count; ++k) - for(std::size_t i = 0; i < sizeof(Data) / sizeof(type<int, int>); ++i) - { - int Result = findMSB_095(static_cast<unsigned int>(Data[i].Value)); - Error += Data[i].Return == Result ? 0 : 1; - } - - std::clock_t Timestamps4 = std::clock(); - -# if GLM_HAS_BITSCAN_WINDOWS - for(std::size_t k = 0; k < Count; ++k) - for(std::size_t i = 0; i < sizeof(Data) / sizeof(type<int, int>); ++i) - { - int Result = findMSB_intrinsic(Data[i].Value); - Error += Data[i].Return == Result ? 0 : 1; - } -# endif//GLM_HAS_BITSCAN_WINDOWS - - std::clock_t Timestamps5 = std::clock(); - - for(std::size_t k = 0; k < Count; ++k) - for(std::size_t i = 0; i < sizeof(Data) / sizeof(type<int, int>); ++i) - { - int Result = findMSB_pop(static_cast<unsigned int>(Data[i].Value)); - Error += Data[i].Return == Result ? 0 : 1; - } - - std::clock_t Timestamps6 = std::clock(); - -# if GLM_ARCH & GLM_ARCH_AVX && GLM_COMPILER & GLM_COMPILER_VC - for(std::size_t k = 0; k < Count; ++k) - for(std::size_t i = 0; i < sizeof(Data) / sizeof(type<int, int>); ++i) - { - int Result = findMSB_avx(Data[i].Value); - Error += Data[i].Return == Result ? 0 : 1; - } - - std::clock_t Timestamps7 = std::clock(); -# endif - - std::printf("glm::findMSB: %d clocks\n", static_cast<int>(Timestamps1 - Timestamps0)); - std::printf("findMSB - nlz1: %d clocks\n", static_cast<int>(Timestamps2 - Timestamps1)); - std::printf("findMSB - nlz2: %d clocks\n", static_cast<int>(Timestamps3 - Timestamps2)); - std::printf("findMSB - 0.9.5: %d clocks\n", static_cast<int>(Timestamps4 - Timestamps3)); - -# if GLM_HAS_BITSCAN_WINDOWS - std::printf("findMSB - intrinsics: %d clocks\n", static_cast<int>(Timestamps5 - Timestamps4)); -# endif//GLM_HAS_BITSCAN_WINDOWS - std::printf("findMSB - pop: %d clocks\n", static_cast<int>(Timestamps6 - Timestamps5)); - -# if GLM_ARCH & GLM_ARCH_AVX && GLM_COMPILER & GLM_COMPILER_VC - std::printf("findMSB - avx tzcnt: %d clocks\n", static_cast<int>(Timestamps7 - Timestamps6)); -# endif//GLM_ARCH & GLM_ARCH_AVX && GLM_PLATFORM & GLM_PLATFORM_WINDOWS - - return Error; - } - - static int test_ivec4() - { - type<glm::ivec4, glm::ivec4> const Data[] = - { - {glm::ivec4(0x00000000), glm::ivec4(-1)}, - {glm::ivec4(0x00000001), glm::ivec4( 0)}, - {glm::ivec4(0x00000002), glm::ivec4( 1)}, - {glm::ivec4(0x00000003), glm::ivec4( 1)}, - {glm::ivec4(0x00000004), glm::ivec4( 2)}, - {glm::ivec4(0x00000005), glm::ivec4( 2)}, - {glm::ivec4(0x00000007), glm::ivec4( 2)}, - {glm::ivec4(0x00000008), glm::ivec4( 3)}, - {glm::ivec4(0x00000010), glm::ivec4( 4)}, - {glm::ivec4(0x00000020), glm::ivec4( 5)}, - {glm::ivec4(0x00000040), glm::ivec4( 6)}, - {glm::ivec4(0x00000080), glm::ivec4( 7)}, - {glm::ivec4(0x00000100), glm::ivec4( 8)}, - {glm::ivec4(0x00000200), glm::ivec4( 9)}, - {glm::ivec4(0x00000400), glm::ivec4(10)}, - {glm::ivec4(0x00000800), glm::ivec4(11)}, - {glm::ivec4(0x00001000), glm::ivec4(12)}, - {glm::ivec4(0x00002000), glm::ivec4(13)}, - {glm::ivec4(0x00004000), glm::ivec4(14)}, - {glm::ivec4(0x00008000), glm::ivec4(15)}, - {glm::ivec4(0x00010000), glm::ivec4(16)}, - {glm::ivec4(0x00020000), glm::ivec4(17)}, - {glm::ivec4(0x00040000), glm::ivec4(18)}, - {glm::ivec4(0x00080000), glm::ivec4(19)}, - {glm::ivec4(0x00100000), glm::ivec4(20)}, - {glm::ivec4(0x00200000), glm::ivec4(21)}, - {glm::ivec4(0x00400000), glm::ivec4(22)}, - {glm::ivec4(0x00800000), glm::ivec4(23)}, - {glm::ivec4(0x01000000), glm::ivec4(24)}, - {glm::ivec4(0x02000000), glm::ivec4(25)}, - {glm::ivec4(0x04000000), glm::ivec4(26)}, - {glm::ivec4(0x08000000), glm::ivec4(27)}, - {glm::ivec4(0x10000000), glm::ivec4(28)}, - {glm::ivec4(0x20000000), glm::ivec4(29)}, - {glm::ivec4(0x40000000), glm::ivec4(30)} - }; - - int Error(0); - - for(std::size_t i = 0; i < sizeof(Data) / sizeof(type<glm::ivec4, glm::ivec4>); ++i) - { - glm::ivec4 Result0 = glm::findMSB(Data[i].Value); - Error += glm::all(glm::equal(Data[i].Return, Result0)) ? 0 : 1; - } - - return Error; - } - - static int test_int() - { - typedef type<glm::uint, int> entry; - - entry const Data[] = - { - {0x00000000, -1}, - {0x00000001, 0}, - {0x00000002, 1}, - {0x00000003, 1}, - {0x00000004, 2}, - {0x00000005, 2}, - {0x00000007, 2}, - {0x00000008, 3}, - {0x00000010, 4}, - {0x00000020, 5}, - {0x00000040, 6}, - {0x00000080, 7}, - {0x00000100, 8}, - {0x00000200, 9}, - {0x00000400, 10}, - {0x00000800, 11}, - {0x00001000, 12}, - {0x00002000, 13}, - {0x00004000, 14}, - {0x00008000, 15}, - {0x00010000, 16}, - {0x00020000, 17}, - {0x00040000, 18}, - {0x00080000, 19}, - {0x00100000, 20}, - {0x00200000, 21}, - {0x00400000, 22}, - {0x00800000, 23}, - {0x01000000, 24}, - {0x02000000, 25}, - {0x04000000, 26}, - {0x08000000, 27}, - {0x10000000, 28}, - {0x20000000, 29}, - {0x40000000, 30} - }; - - int Error(0); - - for(std::size_t i = 0; i < sizeof(Data) / sizeof(entry); ++i) - { - int Result0 = glm::findMSB(Data[i].Value); - Error += Data[i].Return == Result0 ? 0 : 1; - } - - for(std::size_t i = 0; i < sizeof(Data) / sizeof(entry); ++i) - { - int Result0 = findMSB_nlz1(Data[i].Value); - Error += Data[i].Return == Result0 ? 0 : 1; - } -/* - for(std::size_t i = 0; i < sizeof(Data) / sizeof(entry); ++i) - { - int Result0 = findMSB_nlz2(Data[i].Value); - Error += Data[i].Return == Result0 ? 0 : 1; - } -*/ - for(std::size_t i = 0; i < sizeof(Data) / sizeof(entry); ++i) - { - int Result0 = findMSB_095(Data[i].Value); - Error += Data[i].Return == Result0 ? 0 : 1; - } - -# if GLM_HAS_BITSCAN_WINDOWS - for(std::size_t i = 0; i < sizeof(Data) / sizeof(entry); ++i) - { - int Result0 = findMSB_intrinsic(Data[i].Value); - Error += Data[i].Return == Result0 ? 0 : 1; - } -# endif//GLM_HAS_BITSCAN_WINDOWS - - for(std::size_t i = 0; i < sizeof(Data) / sizeof(entry); ++i) - { - int Result0 = findMSB_pop(Data[i].Value); - Error += Data[i].Return == Result0 ? 0 : 1; - } - - return Error; - } - - static int test() - { - int Error(0); - - Error += test_ivec4(); - Error += test_int(); - - return Error; - } - - static int perf(std::size_t Samples) - { - int Error(0); - - Error += perf_int(Samples); - - return Error; - } -}//findMSB - -namespace findLSB -{ - template<typename genType, typename retType> - struct type - { - genType Value; - retType Return; - }; - - typedef type<int, int> entry; - - entry const DataI32[] = - { - {0x00000001, 0}, - {0x00000003, 0}, - {0x00000002, 1}, - // {0x80000000, 31}, // Clang generates an error with this - {0x00010000, 16}, - {0x7FFF0000, 16}, - {0x7F000000, 24}, - {0x7F00FF00, 8}, - {0x00000000, -1} - }; - -# if GLM_HAS_BITSCAN_WINDOWS - template<typename genIUType> - static int findLSB_intrinsic(genIUType Value) - { - GLM_STATIC_ASSERT(std::numeric_limits<genIUType>::is_integer, "'findLSB' only accept integer values"); - - if(Value == 0) - return -1; - - unsigned long Result(0); - _BitScanForward(&Result, Value); - return int(Result); - } -# endif - - template<typename genIUType> - static int findLSB_095(genIUType Value) - { - GLM_STATIC_ASSERT(std::numeric_limits<genIUType>::is_integer, "'findLSB' only accept integer values"); - if(Value == 0) - return -1; - - genIUType Bit; - for(Bit = genIUType(0); !(Value & (1 << Bit)); ++Bit){} - return Bit; - } - - template<typename genIUType> - static int findLSB_ntz2(genIUType x) - { - if(x == 0) - return -1; - - return glm::bitCount(~x & (x - static_cast<genIUType>(1))); - } - - template<typename genIUType> - static int findLSB_branchfree(genIUType x) - { - bool IsNull(x == 0); - int const Keep(!IsNull); - int const Discard(IsNull); - - return static_cast<int>(glm::bitCount(~x & (x - static_cast<genIUType>(1)))) * Keep + Discard * -1; - } - - static int test_int() - { - int Error(0); - - for(std::size_t i = 0; i < sizeof(DataI32) / sizeof(entry); ++i) - { - int Result = glm::findLSB(DataI32[i].Value); - Error += DataI32[i].Return == Result ? 0 : 1; - } - - for(std::size_t i = 0; i < sizeof(DataI32) / sizeof(entry); ++i) - { - int Result = findLSB_095(DataI32[i].Value); - Error += DataI32[i].Return == Result ? 0 : 1; - } - -# if GLM_HAS_BITSCAN_WINDOWS - for(std::size_t i = 0; i < sizeof(DataI32) / sizeof(entry); ++i) - { - int Result = findLSB_intrinsic(DataI32[i].Value); - Error += DataI32[i].Return == Result ? 0 : 1; - } -# endif - - for(std::size_t i = 0; i < sizeof(DataI32) / sizeof(entry); ++i) - { - int Result = findLSB_ntz2(DataI32[i].Value); - Error += DataI32[i].Return == Result ? 0 : 1; - } - - for(std::size_t i = 0; i < sizeof(DataI32) / sizeof(entry); ++i) - { - int Result = findLSB_branchfree(DataI32[i].Value); - Error += DataI32[i].Return == Result ? 0 : 1; - } - - return Error; - } - - static int test() - { - int Error(0); - - Error += test_int(); - - return Error; - } - - static int perf_int(std::size_t Count) - { - int Error(0); - - std::clock_t Timestamps0 = std::clock(); - - for(std::size_t k = 0; k < Count; ++k) - for(std::size_t i = 0; i < sizeof(DataI32) / sizeof(entry); ++i) - { - int Result = glm::findLSB(DataI32[i].Value); - Error += DataI32[i].Return == Result ? 0 : 1; - } - - std::clock_t Timestamps1 = std::clock(); - - for(std::size_t k = 0; k < Count; ++k) - for(std::size_t i = 0; i < sizeof(DataI32) / sizeof(entry); ++i) - { - int Result = findLSB_095(DataI32[i].Value); - Error += DataI32[i].Return == Result ? 0 : 1; - } - - std::clock_t Timestamps2 = std::clock(); - -# if GLM_HAS_BITSCAN_WINDOWS - for(std::size_t k = 0; k < Count; ++k) - for(std::size_t i = 0; i < sizeof(DataI32) / sizeof(entry); ++i) - { - int Result = findLSB_intrinsic(DataI32[i].Value); - Error += DataI32[i].Return == Result ? 0 : 1; - } -# endif - - std::clock_t Timestamps3 = std::clock(); - - for(std::size_t k = 0; k < Count; ++k) - for(std::size_t i = 0; i < sizeof(DataI32) / sizeof(entry); ++i) - { - int Result = findLSB_ntz2(DataI32[i].Value); - Error += DataI32[i].Return == Result ? 0 : 1; - } - - std::clock_t Timestamps4 = std::clock(); - - for(std::size_t k = 0; k < Count; ++k) - for(std::size_t i = 0; i < sizeof(DataI32) / sizeof(entry); ++i) - { - int Result = findLSB_branchfree(DataI32[i].Value); - Error += DataI32[i].Return == Result ? 0 : 1; - } - - std::clock_t Timestamps5 = std::clock(); - - std::printf("glm::findLSB: %d clocks\n", static_cast<int>(Timestamps1 - Timestamps0)); - std::printf("findLSB - 0.9.5: %d clocks\n", static_cast<int>(Timestamps2 - Timestamps1)); - -# if GLM_HAS_BITSCAN_WINDOWS - std::printf("findLSB - intrinsics: %d clocks\n", static_cast<int>(Timestamps3 - Timestamps2)); -# endif - - std::printf("findLSB - ntz2: %d clocks\n", static_cast<int>(Timestamps4 - Timestamps3)); - std::printf("findLSB - branchfree: %d clocks\n", static_cast<int>(Timestamps5 - Timestamps4)); - - return Error; - } - - static int perf(std::size_t Samples) - { - int Error(0); - - Error += perf_int(Samples); - - return Error; - } -}//findLSB - -namespace uaddCarry -{ - static int test() - { - int Error(0); - - { - glm::uint x = std::numeric_limits<glm::uint>::max(); - glm::uint y = 0; - glm::uint Carry = 0; - glm::uint Result = glm::uaddCarry(x, y, Carry); - - Error += Carry == 0 ? 0 : 1; - Error += Result == std::numeric_limits<glm::uint>::max() ? 0 : 1; - } - - { - glm::uint x = std::numeric_limits<glm::uint>::max(); - glm::uint y = 1; - glm::uint Carry = 0; - glm::uint Result = glm::uaddCarry(x, y, Carry); - - Error += Carry == 1 ? 0 : 1; - Error += Result == 0 ? 0 : 1; - } - - { - glm::uvec1 x(std::numeric_limits<glm::uint>::max()); - glm::uvec1 y(0); - glm::uvec1 Carry(0); - glm::uvec1 Result(glm::uaddCarry(x, y, Carry)); - - Error += glm::all(glm::equal(Carry, glm::uvec1(0))) ? 0 : 1; - Error += glm::all(glm::equal(Result, glm::uvec1(std::numeric_limits<glm::uint>::max()))) ? 0 : 1; - } - - { - glm::uvec1 x(std::numeric_limits<glm::uint>::max()); - glm::uvec1 y(1); - glm::uvec1 Carry(0); - glm::uvec1 Result(glm::uaddCarry(x, y, Carry)); - - Error += glm::all(glm::equal(Carry, glm::uvec1(1))) ? 0 : 1; - Error += glm::all(glm::equal(Result, glm::uvec1(0))) ? 0 : 1; - } - - return Error; - } -}//namespace uaddCarry - -namespace usubBorrow -{ - static int test() - { - int Error(0); - - { - glm::uint x = 16; - glm::uint y = 17; - glm::uint Borrow = 0; - glm::uint Result = glm::usubBorrow(x, y, Borrow); - - Error += Borrow == 1 ? 0 : 1; - Error += Result == 1 ? 0 : 1; - } - - { - glm::uvec1 x(16); - glm::uvec1 y(17); - glm::uvec1 Borrow(0); - glm::uvec1 Result(glm::usubBorrow(x, y, Borrow)); - - Error += glm::all(glm::equal(Borrow, glm::uvec1(1))) ? 0 : 1; - Error += glm::all(glm::equal(Result, glm::uvec1(1))) ? 0 : 1; - } - - { - glm::uvec2 x(16); - glm::uvec2 y(17); - glm::uvec2 Borrow(0); - glm::uvec2 Result(glm::usubBorrow(x, y, Borrow)); - - Error += glm::all(glm::equal(Borrow, glm::uvec2(1))) ? 0 : 1; - Error += glm::all(glm::equal(Result, glm::uvec2(1))) ? 0 : 1; - } - - { - glm::uvec3 x(16); - glm::uvec3 y(17); - glm::uvec3 Borrow(0); - glm::uvec3 Result(glm::usubBorrow(x, y, Borrow)); - - Error += glm::all(glm::equal(Borrow, glm::uvec3(1))) ? 0 : 1; - Error += glm::all(glm::equal(Result, glm::uvec3(1))) ? 0 : 1; - } - - { - glm::uvec4 x(16); - glm::uvec4 y(17); - glm::uvec4 Borrow(0); - glm::uvec4 Result(glm::usubBorrow(x, y, Borrow)); - - Error += glm::all(glm::equal(Borrow, glm::uvec4(1))) ? 0 : 1; - Error += glm::all(glm::equal(Result, glm::uvec4(1))) ? 0 : 1; - } - - return Error; - } -}//namespace usubBorrow - -namespace umulExtended -{ - static int test() - { - int Error(0); - - { - glm::uint x = 2; - glm::uint y = 3; - glm::uint msb = 0; - glm::uint lsb = 0; - glm::umulExtended(x, y, msb, lsb); - - Error += msb == 0 ? 0 : 1; - Error += lsb == 6 ? 0 : 1; - } - - { - glm::uvec1 x(2); - glm::uvec1 y(3); - glm::uvec1 msb(0); - glm::uvec1 lsb(0); - glm::umulExtended(x, y, msb, lsb); - - Error += glm::all(glm::equal(msb, glm::uvec1(0))) ? 0 : 1; - Error += glm::all(glm::equal(lsb, glm::uvec1(6))) ? 0 : 1; - } - - { - glm::uvec2 x(2); - glm::uvec2 y(3); - glm::uvec2 msb(0); - glm::uvec2 lsb(0); - glm::umulExtended(x, y, msb, lsb); - - Error += glm::all(glm::equal(msb, glm::uvec2(0))) ? 0 : 1; - Error += glm::all(glm::equal(lsb, glm::uvec2(6))) ? 0 : 1; - } - - { - glm::uvec3 x(2); - glm::uvec3 y(3); - glm::uvec3 msb(0); - glm::uvec3 lsb(0); - glm::umulExtended(x, y, msb, lsb); - - Error += glm::all(glm::equal(msb, glm::uvec3(0))) ? 0 : 1; - Error += glm::all(glm::equal(lsb, glm::uvec3(6))) ? 0 : 1; - } - - { - glm::uvec4 x(2); - glm::uvec4 y(3); - glm::uvec4 msb(0); - glm::uvec4 lsb(0); - glm::umulExtended(x, y, msb, lsb); - - Error += glm::all(glm::equal(msb, glm::uvec4(0))) ? 0 : 1; - Error += glm::all(glm::equal(lsb, glm::uvec4(6))) ? 0 : 1; - } - - return Error; - } -}//namespace umulExtended - -namespace imulExtended -{ - static int test() - { - int Error(0); - - { - int x = 2; - int y = 3; - int msb = 0; - int lsb = 0; - glm::imulExtended(x, y, msb, lsb); - - Error += msb == 0 ? 0 : 1; - Error += lsb == 6 ? 0 : 1; - } - - { - glm::ivec1 x(2); - glm::ivec1 y(3); - glm::ivec1 msb(0); - glm::ivec1 lsb(0); - glm::imulExtended(x, y, msb, lsb); - - Error += glm::all(glm::equal(msb, glm::ivec1(0))) ? 0 : 1; - Error += glm::all(glm::equal(lsb, glm::ivec1(6))) ? 0 : 1; - } - - { - glm::ivec2 x(2); - glm::ivec2 y(3); - glm::ivec2 msb(0); - glm::ivec2 lsb(0); - glm::imulExtended(x, y, msb, lsb); - - Error += glm::all(glm::equal(msb, glm::ivec2(0))) ? 0 : 1; - Error += glm::all(glm::equal(lsb, glm::ivec2(6))) ? 0 : 1; - } - - { - glm::ivec3 x(2); - glm::ivec3 y(3); - glm::ivec3 msb(0); - glm::ivec3 lsb(0); - glm::imulExtended(x, y, msb, lsb); - - Error += glm::all(glm::equal(msb, glm::ivec3(0))) ? 0 : 1; - Error += glm::all(glm::equal(lsb, glm::ivec3(6))) ? 0 : 1; - } - - { - glm::ivec4 x(2); - glm::ivec4 y(3); - glm::ivec4 msb(0); - glm::ivec4 lsb(0); - glm::imulExtended(x, y, msb, lsb); - - Error += glm::all(glm::equal(msb, glm::ivec4(0))) ? 0 : 1; - Error += glm::all(glm::equal(lsb, glm::ivec4(6))) ? 0 : 1; - } - - return Error; - } -}//namespace imulExtended - -namespace bitCount -{ - template<typename genType> - struct type - { - genType Value; - genType Return; - }; - - type<int> const DataI32[] = - { - {0x00000001, 1}, - {0x00000003, 2}, - {0x00000002, 1}, - {0x7fffffff, 31}, - {0x00000000, 0} - }; - - template<typename T> - inline int bitCount_if(T v) - { - GLM_STATIC_ASSERT(std::numeric_limits<T>::is_integer, "'bitCount' only accept integer values"); - - int Count(0); - for(T i = 0, n = static_cast<T>(sizeof(T) * 8); i < n; ++i) - { - if(v & static_cast<T>(1 << i)) - ++Count; - } - return Count; - } - - template<typename T> - inline int bitCount_vec(T v) - { - GLM_STATIC_ASSERT(std::numeric_limits<T>::is_integer, "'bitCount' only accept integer values"); - - int Count(0); - for(T i = 0, n = static_cast<T>(sizeof(T) * 8); i < n; ++i) - { - Count += static_cast<int>((v >> i) & static_cast<T>(1)); - } - return Count; - } - - template<bool EXEC = false> - struct compute_bitfieldBitCountStep - { - template<glm::length_t L, typename T, glm::qualifier Q> - GLM_FUNC_QUALIFIER static glm::vec<L, T, Q> call(glm::vec<L, T, Q> const& v, T, T) - { - return v; - } - }; - - template<> - struct compute_bitfieldBitCountStep<true> - { - template<glm::length_t L, typename T, glm::qualifier Q> - GLM_FUNC_QUALIFIER static glm::vec<L, T, Q> call(glm::vec<L, T, Q> const& v, T Mask, T Shift) - { - return (v & Mask) + ((v >> Shift) & Mask); - } - }; - - template<glm::length_t L, typename T, glm::qualifier Q> - static glm::vec<L, int, Q> bitCount_bitfield(glm::vec<L, T, Q> const& v) - { - glm::vec<L, typename glm::detail::make_unsigned<T>::type, Q> x(*reinterpret_cast<glm::vec<L, typename glm::detail::make_unsigned<T>::type, Q> const *>(&v)); - x = compute_bitfieldBitCountStep<sizeof(T) * 8 >= 2>::call(x, static_cast<typename glm::detail::make_unsigned<T>::type>(0x5555555555555555ull), static_cast<typename glm::detail::make_unsigned<T>::type>( 1)); - x = compute_bitfieldBitCountStep<sizeof(T) * 8 >= 4>::call(x, static_cast<typename glm::detail::make_unsigned<T>::type>(0x3333333333333333ull), static_cast<typename glm::detail::make_unsigned<T>::type>( 2)); - x = compute_bitfieldBitCountStep<sizeof(T) * 8 >= 8>::call(x, static_cast<typename glm::detail::make_unsigned<T>::type>(0x0F0F0F0F0F0F0F0Full), static_cast<typename glm::detail::make_unsigned<T>::type>( 4)); - x = compute_bitfieldBitCountStep<sizeof(T) * 8 >= 16>::call(x, static_cast<typename glm::detail::make_unsigned<T>::type>(0x00FF00FF00FF00FFull), static_cast<typename glm::detail::make_unsigned<T>::type>( 8)); - x = compute_bitfieldBitCountStep<sizeof(T) * 8 >= 32>::call(x, static_cast<typename glm::detail::make_unsigned<T>::type>(0x0000FFFF0000FFFFull), static_cast<typename glm::detail::make_unsigned<T>::type>(16)); - x = compute_bitfieldBitCountStep<sizeof(T) * 8 >= 64>::call(x, static_cast<typename glm::detail::make_unsigned<T>::type>(0x00000000FFFFFFFFull), static_cast<typename glm::detail::make_unsigned<T>::type>(32)); - return glm::vec<L, int, Q>(x); - } - - template<typename genType> - static int bitCount_bitfield(genType x) - { - return bitCount_bitfield(glm::vec<1, genType, glm::defaultp>(x)).x; - } - - static int perf(std::size_t Size) - { - int Error(0); - - std::vector<int> v; - v.resize(Size); - - std::vector<glm::ivec4> w; - w.resize(Size); - - - std::clock_t TimestampsA = std::clock(); - - // bitCount - TimeIf - { - for(std::size_t i = 0, n = v.size(); i < n; ++i) - v[i] = bitCount_if(static_cast<int>(i)); - } - - std::clock_t TimestampsB = std::clock(); - - // bitCount - TimeVec - { - for(std::size_t i = 0, n = v.size(); i < n; ++i) - v[i] = bitCount_vec(i); - } - - std::clock_t TimestampsC = std::clock(); - - // bitCount - TimeDefault - { - for(std::size_t i = 0, n = v.size(); i < n; ++i) - v[i] = glm::bitCount(i); - } - - std::clock_t TimestampsD = std::clock(); - - // bitCount - TimeVec4 - { - for(std::size_t i = 0, n = v.size(); i < n; ++i) - w[i] = glm::bitCount(glm::ivec4(static_cast<int>(i))); - } - - std::clock_t TimestampsE = std::clock(); - - { - for(std::size_t i = 0, n = v.size(); i < n; ++i) - v[i] = bitCount_bitfield(static_cast<int>(i)); - } - - std::clock_t TimestampsF = std::clock(); - - std::printf("bitCount - TimeIf %d\n", static_cast<int>(TimestampsB - TimestampsA)); - std::printf("bitCount - TimeVec %d\n", static_cast<int>(TimestampsC - TimestampsB)); - std::printf("bitCount - TimeDefault %d\n", static_cast<int>(TimestampsD - TimestampsC)); - std::printf("bitCount - TimeVec4 %d\n", static_cast<int>(TimestampsE - TimestampsD)); - std::printf("bitCount - bitfield %d\n", static_cast<int>(TimestampsF - TimestampsE)); - - return Error; - } - - static int test() - { - int Error(0); - - for(std::size_t i = 0, n = sizeof(DataI32) / sizeof(type<int>); i < n; ++i) - { - int ResultA = glm::bitCount(DataI32[i].Value); - int ResultB = bitCount_if(DataI32[i].Value); - int ResultC = bitCount_vec(DataI32[i].Value); - int ResultE = bitCount_bitfield(DataI32[i].Value); - - Error += DataI32[i].Return == ResultA ? 0 : 1; - Error += DataI32[i].Return == ResultB ? 0 : 1; - Error += DataI32[i].Return == ResultC ? 0 : 1; - Error += DataI32[i].Return == ResultE ? 0 : 1; - - assert(!Error); - } - - return Error; - } -}//bitCount - -int main() -{ - int Error = 0; - - Error += ::bitCount::test(); - Error += ::bitfieldReverse::test(); - Error += ::findMSB::test(); - Error += ::findLSB::test(); - Error += ::umulExtended::test(); - Error += ::imulExtended::test(); - Error += ::uaddCarry::test(); - Error += ::usubBorrow::test(); - Error += ::bitfieldInsert::test(); - Error += ::bitfieldExtract::test(); - -# ifdef NDEBUG - std::size_t const Samples = 1000; -# else - std::size_t const Samples = 1; -# endif - - ::bitCount::perf(Samples); - ::bitfieldReverse::perf(Samples); - ::findMSB::perf(Samples); - ::findLSB::perf(Samples); - - return Error; -} |