AuroraSupport/AuROXTL
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[*] The runtime variant of Fnv1a was completely FUCKED

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This commit is contained in:
Reece Wilson 2024-04-23 05:28:53 +01:00
parent 9e527bbe3c
commit 91a83c2353
2 changed files with 153 additions and 9 deletions
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129
Include/auROXTL/auFNV1Utils.hpp
View File

@ -142,7 +142,7 @@ inline AuUInt32 AuFnv1a32Runtime(const void *base, AuUInt length) noexcept
AuUInt i {}; AuUInt i {};
for (; i < length; i++) for (; i < length; i++)
{ {
result ^= AuUInt32(AuReadU8(base, i)) * AuUInt32(kFnv1MagicPrime32); result = (result ^ AuUInt32(AuReadU8(base, i))) * AuUInt64(kFnv1MagicPrime32);
} }
return result; return result;
@ -155,7 +155,7 @@ inline AuUInt64 AuFnv1a64Runtime(const void *base, AuUInt length) noexcept
AuUInt i {}; AuUInt i {};
for (; i < length; i++) for (; i < length; i++)
{ {
result ^= AuUInt64(AuReadU8(base, i)) * AuUInt64(kFnv1MagicPrime64); result = (result ^ AuUInt64(AuReadU8(base, i))) * AuUInt64(kFnv1MagicPrime64);
} }
return result; return result;
@ -168,6 +168,131 @@ inline auto AuFnv1aRuntime(const void *base, AuUInt length) noexcept
AuFnv1a64Runtime(base, length); AuFnv1a64Runtime(base, length);
} }
template <AuUInt uCount>
inline AuUInt64 AuFnv1a64Runtime(const void *base) noexcept
{
AuUInt64 result { kFnv1MagicVal64 };
AuUInt i {};
for (; i < uCount; i++)
{
result = (result ^ AuUInt64(AuReadU8(base, i))) * AuUInt64(kFnv1MagicPrime64);
}
return result;
}
template <AuUInt uCount>
inline AuUInt32 AuFnv1a32Runtime(const void *base) noexcept
{
AuUInt32 result { kFnv1MagicVal32 };
AuUInt i {};
for (; i < uCount; i++)
{
result = (result ^ AuUInt32(AuReadU8(base, i))) * AuUInt32(kFnv1MagicPrime32);
}
return result;
}
#if defined(AU_CPU_ENDIAN_LITTLE)
template <>
inline AuUInt32 AuFnv1a32Runtime<2>(const void *base) noexcept
{
AuUInt32 result { kFnv1MagicVal32 };
auto uWord16 = AuReadU16(base, 0);
result = (result ^ AuUInt32((uWord16 & 0xFF) >> 0)) * AuUInt32(kFnv1MagicPrime32);
result = (result ^ AuUInt32((uWord16 & 0xFF00) >> 8)) * AuUInt32(kFnv1MagicPrime32);
return result;
}
template <>
inline AuUInt32 AuFnv1a32Runtime<4>(const void *base) noexcept
{
AuUInt32 result { kFnv1MagicVal32 };
auto uWord32 = AuReadU32(base, 0);
result = (result ^ AuUInt32((uWord32 & 0xFF) >> 0)) * AuUInt32(kFnv1MagicPrime32);
result = (result ^ AuUInt32((uWord32 & 0xFF00) >> 8)) * AuUInt32(kFnv1MagicPrime32);
result = (result ^ AuUInt32((uWord32 & 0xFF0000) >> 16)) * AuUInt32(kFnv1MagicPrime32);
result = (result ^ AuUInt32((uWord32 & 0xFF000000) >> 24)) * AuUInt32(kFnv1MagicPrime32);
return result;
}
template <>
inline AuUInt32 AuFnv1a32Runtime<8>(const void *base) noexcept
{
AuUInt32 result { kFnv1MagicVal32 };
auto uWord32 = AuReadU32(base, 0);
auto uWord32Hi = AuReadU32(base, 4);
result = (result ^ AuUInt32((uWord32 & 0xFF) >> 0)) * AuUInt32(kFnv1MagicPrime32);
result = (result ^ AuUInt32((uWord32 & 0xFF00) >> 8)) * AuUInt32(kFnv1MagicPrime32);
result = (result ^ AuUInt32((uWord32 & 0xFF0000) >> 16)) * AuUInt32(kFnv1MagicPrime32);
result = (result ^ AuUInt32((uWord32 & 0xFF000000) >> 24)) * AuUInt32(kFnv1MagicPrime32);
result = (result ^ AuUInt32((uWord32Hi & 0xFF) >> 0)) * AuUInt32(kFnv1MagicPrime32);
result = (result ^ AuUInt32((uWord32Hi & 0xFF00) >> 8)) * AuUInt32(kFnv1MagicPrime32);
result = (result ^ AuUInt32((uWord32Hi & 0xFF0000) >> 16)) * AuUInt32(kFnv1MagicPrime32);
result = (result ^ AuUInt32((uWord32Hi & 0xFF000000) >> 24)) * AuUInt32(kFnv1MagicPrime32);
return result;
}
template <>
inline AuUInt64 AuFnv1a64Runtime<2>(const void *base) noexcept
{
AuUInt64 result { kFnv1MagicVal64 };
auto uWord16 = AuReadU16(base, 0);
result = (result ^ AuUInt64((uWord16 & 0xFF) >> 0)) * AuUInt64(kFnv1MagicPrime64);
result = (result ^ AuUInt64((uWord16 & 0xFF00) >> 8)) * AuUInt64(kFnv1MagicPrime64);
return result;
}
template <>
inline AuUInt64 AuFnv1a64Runtime<4>(const void *base) noexcept
{
AuUInt64 result { kFnv1MagicVal64 };
auto uWord64 = AuReadU32(base, 0);
result = (result ^ AuUInt64((uWord64 & 0xFF) >> 0)) * AuUInt64(kFnv1MagicPrime64);
result = (result ^ AuUInt64((uWord64 & 0xFF00) >> 8)) * AuUInt64(kFnv1MagicPrime64);
result = (result ^ AuUInt64((uWord64 & 0xFF0000) >> 16)) * AuUInt64(kFnv1MagicPrime64);
result = (result ^ AuUInt64((uWord64 & 0xFF000000) >> 24)) * AuUInt64(kFnv1MagicPrime64);
return result;
}
template <>
inline AuUInt64 AuFnv1a64Runtime<8>(const void *base) noexcept
{
AuUInt64 result { kFnv1MagicVal64 };
auto uWord32 = AuReadU32(base, 0);
auto uWord32Hi = AuReadU32(base, 4);
result = (result ^ AuUInt64((uWord32 & 0xFF) >> 0)) * AuUInt64(kFnv1MagicPrime64);
result = (result ^ AuUInt64((uWord32 & 0xFF00) >> 8)) * AuUInt64(kFnv1MagicPrime64);
result = (result ^ AuUInt64((uWord32 & 0xFF0000) >> 16)) * AuUInt64(kFnv1MagicPrime64);
result = (result ^ AuUInt64((uWord32 & 0xFF000000) >> 24)) * AuUInt64(kFnv1MagicPrime64);
result = (result ^ AuUInt64((uWord32Hi & 0xFF) >> 0)) * AuUInt64(kFnv1MagicPrime64);
result = (result ^ AuUInt64((uWord32Hi & 0xFF00) >> 8)) * AuUInt64(kFnv1MagicPrime64);
result = (result ^ AuUInt64((uWord32Hi & 0xFF0000) >> 16)) * AuUInt64(kFnv1MagicPrime64);
result = (result ^ AuUInt64((uWord32Hi & 0xFF000000) >> 24)) * AuUInt64(kFnv1MagicPrime64);
return result;
}
#endif
template <AuUInt uCount>
inline auto AuFnv1aRuntime(const void *base) noexcept
{
return _AU_FNV1_32 ?
AuFnv1a32Runtime<uCount>(base) :
AuFnv1a64Runtime<uCount>(base);
}
#undef _AU_FNV1_32 #undef _AU_FNV1_32
#if defined(_AU_HASH_RETARD_COMPILER) #if defined(_AU_HASH_RETARD_COMPILER)

33
Include/auROXTL/auHashUtils.hpp
View File

@ -12,7 +12,7 @@
#define _AU_HASH_UTILS_HAS_STD #define _AU_HASH_UTILS_HAS_STD
#if defined(AURORA_COMPILER_CLANG) && !defined(AURORA_BUG_DOES_CLANG_SUPPORT_64_BIT_CONSTEXPR_YET) #if 1 || defined(AURORA_COMPILER_CLANG) && !defined(AURORA_BUG_DOES_CLANG_SUPPORT_64_BIT_CONSTEXPR_YET)
#define _AU_HASH_RETARD_COMPILER #define _AU_HASH_RETARD_COMPILER
#define _AH_HAS_RETARD_CONSTEXPR #define _AH_HAS_RETARD_CONSTEXPR
#else #else
@ -96,7 +96,7 @@ namespace AuHash
#if defined(_AU_HASH_RETARD_COMPILER) #if defined(_AU_HASH_RETARD_COMPILER)
return AuFnv1aRuntime(&key, sizeof(key)); return AuFnv1aRuntime(&key, sizeof(key));
#else #else
return AuFnv1aType<AuUInt32>(key); return AuFnv1a64Runtime<sizeof(AuUInt32)>(&key);
#endif #endif
} }
@ -105,7 +105,7 @@ namespace AuHash
#if defined(_AU_HASH_RETARD_COMPILER) #if defined(_AU_HASH_RETARD_COMPILER)
return AuFnv1aRuntime(&key, sizeof(key)); return AuFnv1aRuntime(&key, sizeof(key));
#else #else
return AuFnv1aType<AuUInt64>(key); return AuFnv1a64Runtime<sizeof(AuUInt64)>(&key);
#endif #endif
} }
#endif #endif
@ -117,7 +117,7 @@ namespace AuHash
{ \ { \
_AH_HAS_RETARD_CONSTEXPR AuUInt operator ()(const type b) const \ _AH_HAS_RETARD_CONSTEXPR AuUInt operator ()(const type b) const \
{ \ { \
return AuFnv1aRuntime(&b, sizeof(b)); \ return AuFnv1aRuntime<sizeof(b)>(&b); \
} \ } \
}; };
#else #else
@ -127,7 +127,7 @@ namespace AuHash
{ \ { \
_AH_HAS_RETARD_CONSTEXPR AuUInt operator ()(const type b) const \ _AH_HAS_RETARD_CONSTEXPR AuUInt operator ()(const type b) const \
{ \ { \
return AuFnv1aType<type>(b); \ return AuFnv1aRuntime<sizeof(b)>(&b); \
} \ } \
}; };
#endif #endif
@ -184,6 +184,7 @@ namespace AuHash
#endif #endif
#if 0
_HASH_INT32BIT(bool); _HASH_INT32BIT(bool);
_HASH_INT32BIT(char); _HASH_INT32BIT(char);
_HASH_INT32BIT(signed char); _HASH_INT32BIT(signed char);
@ -200,6 +201,24 @@ namespace AuHash
_HASH_INT64BIT(long long); _HASH_INT64BIT(long long);
_HASH_INT64BIT(unsigned long); _HASH_INT64BIT(unsigned long);
_HASH_INT64BIT(unsigned long long); _HASH_INT64BIT(unsigned long long);
#else
_HASH_INT(bool);
_HASH_INT(char);
_HASH_INT(signed char);
_HASH_INT(unsigned char);
_HASH_INT(char8_t);
_HASH_INT(char16_t);
_HASH_INT(char32_t);
_HASH_INT(wchar_t);
_HASH_INT(short);
_HASH_INT(unsigned short);
_HASH_INT(int);
_HASH_INT(unsigned int);
_HASH_INT(long); // I know, I don't care.
_HASH_INT(long long);
_HASH_INT(unsigned long);
_HASH_INT(unsigned long long);
#endif
_HASH_INT(float); _HASH_INT(float);
_HASH_INT(double); _HASH_INT(double);
_HASH_INT(long double); _HASH_INT(long double);
@ -409,9 +428,9 @@ struct AuEnableHashCodeOnData
AuUInt HashCode() const AuUInt HashCode() const
{ {
#if defined(AURORA_IS_32BIT) #if defined(AURORA_IS_32BIT)
return AuFnv1a32Runtime(AuStaticCast<AuAddConst_t<T>>(this), sizeof(T)); return AuFnv1a64Runtime<sizeof(T)>(AuStaticCast<AuAddConst_t<T>>(this));
#else #else
return AuFnv1a64Runtime(AuStaticCast<AuAddConst_t<T>>(this), sizeof(T)); return AuFnv1a64Runtime<sizeof(T)>(AuStaticCast<AuAddConst_t<T>>(this));
#endif #endif
} }
}; };