+++ /dev/null
-/*
-xxHash - Fast Hash algorithm
-Copyright (C) 2012-2016, Yann Collet
-
-BSD 2-Clause License (http://www.opensource.org/licenses/bsd-license.php)
-
-Redistribution and use in source and binary forms, with or without
-modification, are permitted provided that the following conditions are
-met:
-
-* Redistributions of source code must retain the above copyright
-notice, this list of conditions and the following disclaimer.
-* Redistributions in binary form must reproduce the above
-copyright notice, this list of conditions and the following disclaimer
-in the documentation and/or other materials provided with the
-distribution.
-
-THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-You can contact the author at :
-- xxHash source repository : https://github.com/Cyan4973/xxHash
-*/
-
-
-/* *************************************
-* Tuning parameters
-***************************************/
-/*!XXH_FORCE_MEMORY_ACCESS
- * By default, access to unaligned memory is controlled by `memcpy()`, which is safe and portable.
- * Unfortunately, on some target/compiler combinations, the generated assembly is sub-optimal.
- * The below switch allow to select different access method for improved performance.
- * Method 0 (default) : use `memcpy()`. Safe and portable.
- * Method 1 : `__packed` statement. It depends on compiler extension (ie, not portable).
- * This method is safe if your compiler supports it, and *generally* as fast or faster than `memcpy`.
- * Method 2 : direct access. This method doesn't depend on compiler but violate C standard.
- * It can generate buggy code on targets which do not support unaligned memory accesses.
- * But in some circumstances, it's the only known way to get the most performance (ie GCC + ARMv6)
- * See http://stackoverflow.com/a/32095106/646947 for details.
- * Prefer these methods in priority order (0 > 1 > 2)
- */
-#ifndef XXH_FORCE_MEMORY_ACCESS /* can be defined externally, on command line for example */
-# if defined(__GNUC__) && ( defined(__ARM_ARCH_6__) || defined(__ARM_ARCH_6J__) || defined(__ARM_ARCH_6K__) || defined(__ARM_ARCH_6Z__) || defined(__ARM_ARCH_6ZK__) || defined(__ARM_ARCH_6T2__) )
-# define XXH_FORCE_MEMORY_ACCESS 2
-# elif defined(__INTEL_COMPILER) || \
- (defined(__GNUC__) && ( defined(__ARM_ARCH_7__) || defined(__ARM_ARCH_7A__) || defined(__ARM_ARCH_7R__) || defined(__ARM_ARCH_7M__) || defined(__ARM_ARCH_7S__) ))
-# define XXH_FORCE_MEMORY_ACCESS 1
-# endif
-#endif
-
-/*!XXH_ACCEPT_NULL_INPUT_POINTER :
- * If the input pointer is a null pointer, xxHash default behavior is to trigger a memory access error, since it is a bad pointer.
- * When this option is enabled, xxHash output for null input pointers will be the same as a null-length input.
- * By default, this option is disabled. To enable it, uncomment below define :
- */
-/* #define XXH_ACCEPT_NULL_INPUT_POINTER 1 */
-
-/*!XXH_FORCE_NATIVE_FORMAT :
- * By default, xxHash library provides endian-independant Hash values, based on little-endian convention.
- * Results are therefore identical for little-endian and big-endian CPU.
- * This comes at a performance cost for big-endian CPU, since some swapping is required to emulate little-endian format.
- * Should endian-independance be of no importance for your application, you may set the #define below to 1,
- * to improve speed for Big-endian CPU.
- * This option has no impact on Little_Endian CPU.
- */
-#define XXH_FORCE_NATIVE_FORMAT 0
-
-/*!XXH_USELESS_ALIGN_BRANCH :
- * This is a minor performance trick, only useful with lots of very small keys.
- * It means : don't check for aligned/unaligned input, because performance will be the same.
- * It saves one initial branch per hash.
- */
-#if defined(__i386) || defined(_M_IX86) || defined(__x86_64__) || defined(_M_X64)
-# define XXH_USELESS_ALIGN_BRANCH 1
-#endif
-
-
-/* *************************************
-* Compiler Specific Options
-***************************************/
-#ifdef _MSC_VER /* Visual Studio */
-# pragma warning(disable : 4127) /* disable: C4127: conditional expression is constant */
-# define FORCE_INLINE static __forceinline
-#else
-# if defined (__STDC_VERSION__) && __STDC_VERSION__ >= 199901L /* C99 */
-# ifdef __GNUC__
-# define FORCE_INLINE static inline __attribute__((always_inline))
-# else
-# define FORCE_INLINE static inline
-# endif
-# else
-# define FORCE_INLINE static
-# endif /* __STDC_VERSION__ */
-#endif
-
-
-/* *************************************
-* Includes & Memory related functions
-***************************************/
-/* Modify the local functions below should you wish to use some other memory routines */
-/* for malloc(), free() */
-#include <stdlib.h>
-static void* XXH_malloc(size_t s) { return malloc(s); }
-static void XXH_free (void* p) { free(p); }
-/* for memcpy() */
-#include <string.h>
-static void* XXH_memcpy(void* dest, const void* src, size_t size) { return memcpy(dest,src,size); }
-
-#include "xxhash.h"
-
-
-/* *************************************
-* Basic Types
-***************************************/
-#ifndef MEM_MODULE
-# define MEM_MODULE
-# if defined (__STDC_VERSION__) && __STDC_VERSION__ >= 199901L /* C99 */
-# include <stdint.h>
- typedef uint8_t BYTE;
- typedef uint16_t U16;
- typedef uint32_t U32;
- typedef int32_t S32;
- typedef uint64_t U64;
-# else
- typedef unsigned char BYTE;
- typedef unsigned short U16;
- typedef unsigned int U32;
- typedef signed int S32;
- typedef unsigned long long U64;
-# endif
-#endif
-
-
-#if (defined(XXH_FORCE_MEMORY_ACCESS) && (XXH_FORCE_MEMORY_ACCESS==2))
-
-/* Force direct memory access. Only works on CPU which support unaligned memory access in hardware */
-static U32 XXH_read32(const void* memPtr) { return *(const U32*) memPtr; }
-static U64 XXH_read64(const void* memPtr) { return *(const U64*) memPtr; }
-
-#elif (defined(XXH_FORCE_MEMORY_ACCESS) && (XXH_FORCE_MEMORY_ACCESS==1))
-
-/* __pack instructions are safer, but compiler specific, hence potentially problematic for some compilers */
-/* currently only defined for gcc and icc */
-typedef union { U32 u32; U64 u64; } __attribute__((packed)) unalign;
-
-static U32 XXH_read32(const void* ptr) { return ((const unalign*)ptr)->u32; }
-static U64 XXH_read64(const void* ptr) { return ((const unalign*)ptr)->u64; }
-
-#else
-
-/* portable and safe solution. Generally efficient.
- * see : http://stackoverflow.com/a/32095106/646947
- */
-
-static U32 XXH_read32(const void* memPtr)
-{
- U32 val;
- memcpy(&val, memPtr, sizeof(val));
- return val;
-}
-
-static U64 XXH_read64(const void* memPtr)
-{
- U64 val;
- memcpy(&val, memPtr, sizeof(val));
- return val;
-}
-
-#endif /* XXH_FORCE_DIRECT_MEMORY_ACCESS */
-
-
-/* ****************************************
-* Compiler-specific Functions and Macros
-******************************************/
-#define GCC_VERSION (__GNUC__ * 100 + __GNUC_MINOR__)
-
-/* Note : although _rotl exists for minGW (GCC under windows), performance seems poor */
-#if defined(_MSC_VER)
-# define XXH_rotl32(x,r) _rotl(x,r)
-# define XXH_rotl64(x,r) _rotl64(x,r)
-#else
-# define XXH_rotl32(x,r) ((x << r) | (x >> (32 - r)))
-# define XXH_rotl64(x,r) ((x << r) | (x >> (64 - r)))
-#endif
-
-#if defined(_MSC_VER) /* Visual Studio */
-# define XXH_swap32 _byteswap_ulong
-# define XXH_swap64 _byteswap_uint64
-#elif GCC_VERSION >= 403
-# define XXH_swap32 __builtin_bswap32
-# define XXH_swap64 __builtin_bswap64
-#else
-static U32 XXH_swap32 (U32 x)
-{
- return ((x << 24) & 0xff000000 ) |
- ((x << 8) & 0x00ff0000 ) |
- ((x >> 8) & 0x0000ff00 ) |
- ((x >> 24) & 0x000000ff );
-}
-static U64 XXH_swap64 (U64 x)
-{
- return ((x << 56) & 0xff00000000000000ULL) |
- ((x << 40) & 0x00ff000000000000ULL) |
- ((x << 24) & 0x0000ff0000000000ULL) |
- ((x << 8) & 0x000000ff00000000ULL) |
- ((x >> 8) & 0x00000000ff000000ULL) |
- ((x >> 24) & 0x0000000000ff0000ULL) |
- ((x >> 40) & 0x000000000000ff00ULL) |
- ((x >> 56) & 0x00000000000000ffULL);
-}
-#endif
-
-
-/* *************************************
-* Architecture Macros
-***************************************/
-typedef enum { XXH_bigEndian=0, XXH_littleEndian=1 } XXH_endianess;
-
-/* XXH_CPU_LITTLE_ENDIAN can be defined externally, for example on the compiler command line */
-#ifndef XXH_CPU_LITTLE_ENDIAN
- static const int g_one = 1;
-# define XXH_CPU_LITTLE_ENDIAN (*(const char*)(&g_one))
-#endif
-
-
-/* ***************************
-* Memory reads
-*****************************/
-typedef enum { XXH_aligned, XXH_unaligned } XXH_alignment;
-
-FORCE_INLINE U32 XXH_readLE32_align(const void* ptr, XXH_endianess endian, XXH_alignment align)
-{
- if (align==XXH_unaligned)
- return endian==XXH_littleEndian ? XXH_read32(ptr) : XXH_swap32(XXH_read32(ptr));
- else
- return endian==XXH_littleEndian ? *(const U32*)ptr : XXH_swap32(*(const U32*)ptr);
-}
-
-FORCE_INLINE U32 XXH_readLE32(const void* ptr, XXH_endianess endian)
-{
- return XXH_readLE32_align(ptr, endian, XXH_unaligned);
-}
-
-FORCE_INLINE U64 XXH_readLE64_align(const void* ptr, XXH_endianess endian, XXH_alignment align)
-{
- if (align==XXH_unaligned)
- return endian==XXH_littleEndian ? XXH_read64(ptr) : XXH_swap64(XXH_read64(ptr));
- else
- return endian==XXH_littleEndian ? *(const U64*)ptr : XXH_swap64(*(const U64*)ptr);
-}
-
-FORCE_INLINE U64 XXH_readLE64(const void* ptr, XXH_endianess endian)
-{
- return XXH_readLE64_align(ptr, endian, XXH_unaligned);
-}
-
-
-/* *************************************
-* Macros
-***************************************/
-#define XXH_STATIC_ASSERT(c) { enum { XXH_static_assert = 1/(int)(!!(c)) }; } /* use only *after* variable declarations */
-
-
-/* *************************************
-* Constants
-***************************************/
-#define PRIME32_1 2654435761U
-#define PRIME32_2 2246822519U
-#define PRIME32_3 3266489917U
-#define PRIME32_4 668265263U
-#define PRIME32_5 374761393U
-
-#define PRIME64_1 11400714785074694791ULL
-#define PRIME64_2 14029467366897019727ULL
-#define PRIME64_3 1609587929392839161ULL
-#define PRIME64_4 9650029242287828579ULL
-#define PRIME64_5 2870177450012600261ULL
-
-XXH_PUBLIC_API unsigned XXH_versionNumber (void) { return XXH_VERSION_NUMBER; }
-
-
-/* ***************************
-* Simple Hash Functions
-*****************************/
-FORCE_INLINE U32 XXH32_endian_align(const void* input, size_t len, U32 seed, XXH_endianess endian, XXH_alignment align)
-{
- const BYTE* p = (const BYTE*)input;
- const BYTE* bEnd = p + len;
- U32 h32;
-#define XXH_get32bits(p) XXH_readLE32_align(p, endian, align)
-
-#ifdef XXH_ACCEPT_NULL_INPUT_POINTER
- if (p==NULL)
- {
- len=0;
- bEnd=p=(const BYTE*)(size_t)16;
- }
-#endif
-
- if (len>=16)
- {
- const BYTE* const limit = bEnd - 16;
- U32 v1 = seed + PRIME32_1 + PRIME32_2;
- U32 v2 = seed + PRIME32_2;
- U32 v3 = seed + 0;
- U32 v4 = seed - PRIME32_1;
-
- do
- {
- v1 += XXH_get32bits(p) * PRIME32_2;
- v1 = XXH_rotl32(v1, 13);
- v1 *= PRIME32_1;
- p+=4;
- v2 += XXH_get32bits(p) * PRIME32_2;
- v2 = XXH_rotl32(v2, 13);
- v2 *= PRIME32_1;
- p+=4;
- v3 += XXH_get32bits(p) * PRIME32_2;
- v3 = XXH_rotl32(v3, 13);
- v3 *= PRIME32_1;
- p+=4;
- v4 += XXH_get32bits(p) * PRIME32_2;
- v4 = XXH_rotl32(v4, 13);
- v4 *= PRIME32_1;
- p+=4;
- }
- while (p<=limit);
-
- h32 = XXH_rotl32(v1, 1) + XXH_rotl32(v2, 7) + XXH_rotl32(v3, 12) + XXH_rotl32(v4, 18);
- }
- else
- {
- h32 = seed + PRIME32_5;
- }
-
- h32 += (U32) len;
-
- while (p+4<=bEnd)
- {
- h32 += XXH_get32bits(p) * PRIME32_3;
- h32 = XXH_rotl32(h32, 17) * PRIME32_4 ;
- p+=4;
- }
-
- while (p<bEnd)
- {
- h32 += (*p) * PRIME32_5;
- h32 = XXH_rotl32(h32, 11) * PRIME32_1 ;
- p++;
- }
-
- h32 ^= h32 >> 15;
- h32 *= PRIME32_2;
- h32 ^= h32 >> 13;
- h32 *= PRIME32_3;
- h32 ^= h32 >> 16;
-
- return h32;
-}
-
-
-XXH_PUBLIC_API unsigned int XXH32 (const void* input, size_t len, unsigned int seed)
-{
-#if 0
- /* Simple version, good for code maintenance, but unfortunately slow for small inputs */
- XXH32_state_t state;
- XXH32_reset(&state, seed);
- XXH32_update(&state, input, len);
- return XXH32_digest(&state);
-#else
- XXH_endianess endian_detected = (XXH_endianess)XXH_CPU_LITTLE_ENDIAN;
-
-# if !defined(XXH_USELESS_ALIGN_BRANCH)
- if ((((size_t)input) & 3) == 0) /* Input is 4-bytes aligned, leverage the speed benefit */
- {
- if ((endian_detected==XXH_littleEndian) || XXH_FORCE_NATIVE_FORMAT)
- return XXH32_endian_align(input, len, seed, XXH_littleEndian, XXH_aligned);
- else
- return XXH32_endian_align(input, len, seed, XXH_bigEndian, XXH_aligned);
- }
-# endif
-
- if ((endian_detected==XXH_littleEndian) || XXH_FORCE_NATIVE_FORMAT)
- return XXH32_endian_align(input, len, seed, XXH_littleEndian, XXH_unaligned);
- else
- return XXH32_endian_align(input, len, seed, XXH_bigEndian, XXH_unaligned);
-#endif
-}
-
-FORCE_INLINE U64 XXH64_endian_align(const void* input, size_t len, U64 seed, XXH_endianess endian, XXH_alignment align)
-{
- const BYTE* p = (const BYTE*)input;
- const BYTE* bEnd = p + len;
- U64 h64;
-#define XXH_get64bits(p) XXH_readLE64_align(p, endian, align)
-
-#ifdef XXH_ACCEPT_NULL_INPUT_POINTER
- if (p==NULL)
- {
- len=0;
- bEnd=p=(const BYTE*)(size_t)32;
- }
-#endif
-
- if (len>=32)
- {
- const BYTE* const limit = bEnd - 32;
- U64 v1 = seed + PRIME64_1 + PRIME64_2;
- U64 v2 = seed + PRIME64_2;
- U64 v3 = seed + 0;
- U64 v4 = seed - PRIME64_1;
-
- do
- {
- v1 += XXH_get64bits(p) * PRIME64_2;
- p+=8;
- v1 = XXH_rotl64(v1, 31);
- v1 *= PRIME64_1;
- v2 += XXH_get64bits(p) * PRIME64_2;
- p+=8;
- v2 = XXH_rotl64(v2, 31);
- v2 *= PRIME64_1;
- v3 += XXH_get64bits(p) * PRIME64_2;
- p+=8;
- v3 = XXH_rotl64(v3, 31);
- v3 *= PRIME64_1;
- v4 += XXH_get64bits(p) * PRIME64_2;
- p+=8;
- v4 = XXH_rotl64(v4, 31);
- v4 *= PRIME64_1;
- }
- while (p<=limit);
-
- h64 = XXH_rotl64(v1, 1) + XXH_rotl64(v2, 7) + XXH_rotl64(v3, 12) + XXH_rotl64(v4, 18);
-
- v1 *= PRIME64_2;
- v1 = XXH_rotl64(v1, 31);
- v1 *= PRIME64_1;
- h64 ^= v1;
- h64 = h64 * PRIME64_1 + PRIME64_4;
-
- v2 *= PRIME64_2;
- v2 = XXH_rotl64(v2, 31);
- v2 *= PRIME64_1;
- h64 ^= v2;
- h64 = h64 * PRIME64_1 + PRIME64_4;
-
- v3 *= PRIME64_2;
- v3 = XXH_rotl64(v3, 31);
- v3 *= PRIME64_1;
- h64 ^= v3;
- h64 = h64 * PRIME64_1 + PRIME64_4;
-
- v4 *= PRIME64_2;
- v4 = XXH_rotl64(v4, 31);
- v4 *= PRIME64_1;
- h64 ^= v4;
- h64 = h64 * PRIME64_1 + PRIME64_4;
- }
- else
- {
- h64 = seed + PRIME64_5;
- }
-
- h64 += (U64) len;
-
- while (p+8<=bEnd)
- {
- U64 k1 = XXH_get64bits(p);
- k1 *= PRIME64_2;
- k1 = XXH_rotl64(k1,31);
- k1 *= PRIME64_1;
- h64 ^= k1;
- h64 = XXH_rotl64(h64,27) * PRIME64_1 + PRIME64_4;
- p+=8;
- }
-
- if (p+4<=bEnd)
- {
- h64 ^= (U64)(XXH_get32bits(p)) * PRIME64_1;
- h64 = XXH_rotl64(h64, 23) * PRIME64_2 + PRIME64_3;
- p+=4;
- }
-
- while (p<bEnd)
- {
- h64 ^= (*p) * PRIME64_5;
- h64 = XXH_rotl64(h64, 11) * PRIME64_1;
- p++;
- }
-
- h64 ^= h64 >> 33;
- h64 *= PRIME64_2;
- h64 ^= h64 >> 29;
- h64 *= PRIME64_3;
- h64 ^= h64 >> 32;
-
- return h64;
-}
-
-
-XXH_PUBLIC_API unsigned long long XXH64 (const void* input, size_t len, unsigned long long seed)
-{
-#if 0
- /* Simple version, good for code maintenance, but unfortunately slow for small inputs */
- XXH64_state_t state;
- XXH64_reset(&state, seed);
- XXH64_update(&state, input, len);
- return XXH64_digest(&state);
-#else
- XXH_endianess endian_detected = (XXH_endianess)XXH_CPU_LITTLE_ENDIAN;
-
-# if !defined(XXH_USELESS_ALIGN_BRANCH)
- if ((((size_t)input) & 7)==0) /* Input is aligned, let's leverage the speed advantage */
- {
- if ((endian_detected==XXH_littleEndian) || XXH_FORCE_NATIVE_FORMAT)
- return XXH64_endian_align(input, len, seed, XXH_littleEndian, XXH_aligned);
- else
- return XXH64_endian_align(input, len, seed, XXH_bigEndian, XXH_aligned);
- }
-# endif
-
- if ((endian_detected==XXH_littleEndian) || XXH_FORCE_NATIVE_FORMAT)
- return XXH64_endian_align(input, len, seed, XXH_littleEndian, XXH_unaligned);
- else
- return XXH64_endian_align(input, len, seed, XXH_bigEndian, XXH_unaligned);
-#endif
-}
-
-/* **************************************************
-* Advanced Hash Functions
-****************************************************/
-
-/*** Allocation ***/
-struct XXH32_state_s
-{
- U64 total_len;
- U32 seed;
- U32 v1;
- U32 v2;
- U32 v3;
- U32 v4;
- U32 mem32[4]; /* defined as U32 for alignment */
- U32 memsize;
-}; /* typedef'd to XXH32_state_t within xxhash.h */
-
-struct XXH64_state_s
-{
- U64 total_len;
- U64 seed;
- U64 v1;
- U64 v2;
- U64 v3;
- U64 v4;
- U64 mem64[4]; /* defined as U64 for alignment */
- U32 memsize;
-}; /* typedef'd to XXH64_state_t within xxhash.h */
-
-
-XXH_PUBLIC_API XXH32_state_t* XXH32_createState(void)
-{
- XXH_STATIC_ASSERT(sizeof(XXH32_stateBody_t) >= sizeof(XXH32_state_t)); /* A compilation error here means XXH32_state_t is not large enough */
- return (XXH32_state_t*)XXH_malloc(sizeof(XXH32_state_t));
-}
-XXH_PUBLIC_API XXH_errorcode XXH32_freeState(XXH32_state_t* statePtr)
-{
- XXH_free(statePtr);
- return XXH_OK;
-}
-
-XXH_PUBLIC_API XXH64_state_t* XXH64_createState(void)
-{
- XXH_STATIC_ASSERT(sizeof(XXH64_stateBody_t) >= sizeof(XXH64_state_t)); /* A compilation error here means XXH64_state_t is not large enough */
- return (XXH64_state_t*)XXH_malloc(sizeof(XXH64_state_t));
-}
-XXH_PUBLIC_API XXH_errorcode XXH64_freeState(XXH64_state_t* statePtr)
-{
- XXH_free(statePtr);
- return XXH_OK;
-}
-
-
-/*** Hash feed ***/
-
-XXH_PUBLIC_API XXH_errorcode XXH32_reset(XXH32_state_t* statePtr, unsigned int seed)
-{
- XXH32_state_t state; /* using a local state to memcpy() in order to avoid strict-aliasing warnings */
- memset(&state, 0, sizeof(state));
- state.seed = seed;
- state.v1 = seed + PRIME32_1 + PRIME32_2;
- state.v2 = seed + PRIME32_2;
- state.v3 = seed + 0;
- state.v4 = seed - PRIME32_1;
- memcpy(statePtr, &state, sizeof(state));
- return XXH_OK;
-}
-
-
-XXH_PUBLIC_API XXH_errorcode XXH64_reset(XXH64_state_t* statePtr, unsigned long long seed)
-{
- XXH64_state_t state; /* using a local state to memcpy() in order to avoid strict-aliasing warnings */
- memset(&state, 0, sizeof(state));
- state.seed = seed;
- state.v1 = seed + PRIME64_1 + PRIME64_2;
- state.v2 = seed + PRIME64_2;
- state.v3 = seed + 0;
- state.v4 = seed - PRIME64_1;
- memcpy(statePtr, &state, sizeof(state));
- return XXH_OK;
-}
-
-
-FORCE_INLINE XXH_errorcode XXH32_update_endian (XXH32_state_t* state, const void* input, size_t len, XXH_endianess endian)
-{
- const BYTE* p = (const BYTE*)input;
- const BYTE* const bEnd = p + len;
-
-#ifdef XXH_ACCEPT_NULL_INPUT_POINTER
- if (input==NULL) return XXH_ERROR;
-#endif
-
- state->total_len += len;
-
- if (state->memsize + len < 16) /* fill in tmp buffer */
- {
- XXH_memcpy((BYTE*)(state->mem32) + state->memsize, input, len);
- state->memsize += (U32)len;
- return XXH_OK;
- }
-
- if (state->memsize) /* some data left from previous update */
- {
- XXH_memcpy((BYTE*)(state->mem32) + state->memsize, input, 16-state->memsize);
- {
- const U32* p32 = state->mem32;
- state->v1 += XXH_readLE32(p32, endian) * PRIME32_2;
- state->v1 = XXH_rotl32(state->v1, 13);
- state->v1 *= PRIME32_1;
- p32++;
- state->v2 += XXH_readLE32(p32, endian) * PRIME32_2;
- state->v2 = XXH_rotl32(state->v2, 13);
- state->v2 *= PRIME32_1;
- p32++;
- state->v3 += XXH_readLE32(p32, endian) * PRIME32_2;
- state->v3 = XXH_rotl32(state->v3, 13);
- state->v3 *= PRIME32_1;
- p32++;
- state->v4 += XXH_readLE32(p32, endian) * PRIME32_2;
- state->v4 = XXH_rotl32(state->v4, 13);
- state->v4 *= PRIME32_1;
- p32++;
- }
- p += 16-state->memsize;
- state->memsize = 0;
- }
-
- if (p <= bEnd-16)
- {
- const BYTE* const limit = bEnd - 16;
- U32 v1 = state->v1;
- U32 v2 = state->v2;
- U32 v3 = state->v3;
- U32 v4 = state->v4;
-
- do
- {
- v1 += XXH_readLE32(p, endian) * PRIME32_2;
- v1 = XXH_rotl32(v1, 13);
- v1 *= PRIME32_1;
- p+=4;
- v2 += XXH_readLE32(p, endian) * PRIME32_2;
- v2 = XXH_rotl32(v2, 13);
- v2 *= PRIME32_1;
- p+=4;
- v3 += XXH_readLE32(p, endian) * PRIME32_2;
- v3 = XXH_rotl32(v3, 13);
- v3 *= PRIME32_1;
- p+=4;
- v4 += XXH_readLE32(p, endian) * PRIME32_2;
- v4 = XXH_rotl32(v4, 13);
- v4 *= PRIME32_1;
- p+=4;
- }
- while (p<=limit);
-
- state->v1 = v1;
- state->v2 = v2;
- state->v3 = v3;
- state->v4 = v4;
- }
-
- if (p < bEnd)
- {
- XXH_memcpy(state->mem32, p, bEnd-p);
- state->memsize = (int)(bEnd-p);
- }
-
- return XXH_OK;
-}
-
-XXH_PUBLIC_API XXH_errorcode XXH32_update (XXH32_state_t* state_in, const void* input, size_t len)
-{
- XXH_endianess endian_detected = (XXH_endianess)XXH_CPU_LITTLE_ENDIAN;
-
- if ((endian_detected==XXH_littleEndian) || XXH_FORCE_NATIVE_FORMAT)
- return XXH32_update_endian(state_in, input, len, XXH_littleEndian);
- else
- return XXH32_update_endian(state_in, input, len, XXH_bigEndian);
-}
-
-
-
-FORCE_INLINE U32 XXH32_digest_endian (const XXH32_state_t* state, XXH_endianess endian)
-{
- const BYTE * p = (const BYTE*)state->mem32;
- const BYTE* bEnd = (const BYTE*)(state->mem32) + state->memsize;
- U32 h32;
-
- if (state->total_len >= 16)
- {
- h32 = XXH_rotl32(state->v1, 1) + XXH_rotl32(state->v2, 7) + XXH_rotl32(state->v3, 12) + XXH_rotl32(state->v4, 18);
- }
- else
- {
- h32 = state->seed + PRIME32_5;
- }
-
- h32 += (U32) state->total_len;
-
- while (p+4<=bEnd)
- {
- h32 += XXH_readLE32(p, endian) * PRIME32_3;
- h32 = XXH_rotl32(h32, 17) * PRIME32_4;
- p+=4;
- }
-
- while (p<bEnd)
- {
- h32 += (*p) * PRIME32_5;
- h32 = XXH_rotl32(h32, 11) * PRIME32_1;
- p++;
- }
-
- h32 ^= h32 >> 15;
- h32 *= PRIME32_2;
- h32 ^= h32 >> 13;
- h32 *= PRIME32_3;
- h32 ^= h32 >> 16;
-
- return h32;
-}
-
-
-XXH_PUBLIC_API unsigned int XXH32_digest (const XXH32_state_t* state_in)
-{
- XXH_endianess endian_detected = (XXH_endianess)XXH_CPU_LITTLE_ENDIAN;
-
- if ((endian_detected==XXH_littleEndian) || XXH_FORCE_NATIVE_FORMAT)
- return XXH32_digest_endian(state_in, XXH_littleEndian);
- else
- return XXH32_digest_endian(state_in, XXH_bigEndian);
-}
-
-
-FORCE_INLINE XXH_errorcode XXH64_update_endian (XXH64_state_t* state, const void* input, size_t len, XXH_endianess endian)
-{
- const BYTE* p = (const BYTE*)input;
- const BYTE* const bEnd = p + len;
-
-#ifdef XXH_ACCEPT_NULL_INPUT_POINTER
- if (input==NULL) return XXH_ERROR;
-#endif
-
- state->total_len += len;
-
- if (state->memsize + len < 32) /* fill in tmp buffer */
- {
- XXH_memcpy(((BYTE*)state->mem64) + state->memsize, input, len);
- state->memsize += (U32)len;
- return XXH_OK;
- }
-
- if (state->memsize) /* some data left from previous update */
- {
- XXH_memcpy(((BYTE*)state->mem64) + state->memsize, input, 32-state->memsize);
- {
- const U64* p64 = state->mem64;
- state->v1 += XXH_readLE64(p64, endian) * PRIME64_2;
- state->v1 = XXH_rotl64(state->v1, 31);
- state->v1 *= PRIME64_1;
- p64++;
- state->v2 += XXH_readLE64(p64, endian) * PRIME64_2;
- state->v2 = XXH_rotl64(state->v2, 31);
- state->v2 *= PRIME64_1;
- p64++;
- state->v3 += XXH_readLE64(p64, endian) * PRIME64_2;
- state->v3 = XXH_rotl64(state->v3, 31);
- state->v3 *= PRIME64_1;
- p64++;
- state->v4 += XXH_readLE64(p64, endian) * PRIME64_2;
- state->v4 = XXH_rotl64(state->v4, 31);
- state->v4 *= PRIME64_1;
- p64++;
- }
- p += 32-state->memsize;
- state->memsize = 0;
- }
-
- if (p+32 <= bEnd)
- {
- const BYTE* const limit = bEnd - 32;
- U64 v1 = state->v1;
- U64 v2 = state->v2;
- U64 v3 = state->v3;
- U64 v4 = state->v4;
-
- do
- {
- v1 += XXH_readLE64(p, endian) * PRIME64_2;
- v1 = XXH_rotl64(v1, 31);
- v1 *= PRIME64_1;
- p+=8;
- v2 += XXH_readLE64(p, endian) * PRIME64_2;
- v2 = XXH_rotl64(v2, 31);
- v2 *= PRIME64_1;
- p+=8;
- v3 += XXH_readLE64(p, endian) * PRIME64_2;
- v3 = XXH_rotl64(v3, 31);
- v3 *= PRIME64_1;
- p+=8;
- v4 += XXH_readLE64(p, endian) * PRIME64_2;
- v4 = XXH_rotl64(v4, 31);
- v4 *= PRIME64_1;
- p+=8;
- }
- while (p<=limit);
-
- state->v1 = v1;
- state->v2 = v2;
- state->v3 = v3;
- state->v4 = v4;
- }
-
- if (p < bEnd)
- {
- XXH_memcpy(state->mem64, p, bEnd-p);
- state->memsize = (int)(bEnd-p);
- }
-
- return XXH_OK;
-}
-
-XXH_PUBLIC_API XXH_errorcode XXH64_update (XXH64_state_t* state_in, const void* input, size_t len)
-{
- XXH_endianess endian_detected = (XXH_endianess)XXH_CPU_LITTLE_ENDIAN;
-
- if ((endian_detected==XXH_littleEndian) || XXH_FORCE_NATIVE_FORMAT)
- return XXH64_update_endian(state_in, input, len, XXH_littleEndian);
- else
- return XXH64_update_endian(state_in, input, len, XXH_bigEndian);
-}
-
-
-
-FORCE_INLINE U64 XXH64_digest_endian (const XXH64_state_t* state, XXH_endianess endian)
-{
- const BYTE * p = (const BYTE*)state->mem64;
- const BYTE* bEnd = (const BYTE*)state->mem64 + state->memsize;
- U64 h64;
-
- if (state->total_len >= 32)
- {
- U64 v1 = state->v1;
- U64 v2 = state->v2;
- U64 v3 = state->v3;
- U64 v4 = state->v4;
-
- h64 = XXH_rotl64(v1, 1) + XXH_rotl64(v2, 7) + XXH_rotl64(v3, 12) + XXH_rotl64(v4, 18);
-
- v1 *= PRIME64_2;
- v1 = XXH_rotl64(v1, 31);
- v1 *= PRIME64_1;
- h64 ^= v1;
- h64 = h64*PRIME64_1 + PRIME64_4;
-
- v2 *= PRIME64_2;
- v2 = XXH_rotl64(v2, 31);
- v2 *= PRIME64_1;
- h64 ^= v2;
- h64 = h64*PRIME64_1 + PRIME64_4;
-
- v3 *= PRIME64_2;
- v3 = XXH_rotl64(v3, 31);
- v3 *= PRIME64_1;
- h64 ^= v3;
- h64 = h64*PRIME64_1 + PRIME64_4;
-
- v4 *= PRIME64_2;
- v4 = XXH_rotl64(v4, 31);
- v4 *= PRIME64_1;
- h64 ^= v4;
- h64 = h64*PRIME64_1 + PRIME64_4;
- }
- else
- {
- h64 = state->seed + PRIME64_5;
- }
-
- h64 += (U64) state->total_len;
-
- while (p+8<=bEnd)
- {
- U64 k1 = XXH_readLE64(p, endian);
- k1 *= PRIME64_2;
- k1 = XXH_rotl64(k1,31);
- k1 *= PRIME64_1;
- h64 ^= k1;
- h64 = XXH_rotl64(h64,27) * PRIME64_1 + PRIME64_4;
- p+=8;
- }
-
- if (p+4<=bEnd)
- {
- h64 ^= (U64)(XXH_readLE32(p, endian)) * PRIME64_1;
- h64 = XXH_rotl64(h64, 23) * PRIME64_2 + PRIME64_3;
- p+=4;
- }
-
- while (p<bEnd)
- {
- h64 ^= (*p) * PRIME64_5;
- h64 = XXH_rotl64(h64, 11) * PRIME64_1;
- p++;
- }
-
- h64 ^= h64 >> 33;
- h64 *= PRIME64_2;
- h64 ^= h64 >> 29;
- h64 *= PRIME64_3;
- h64 ^= h64 >> 32;
-
- return h64;
-}
-
-
-XXH_PUBLIC_API unsigned long long XXH64_digest (const XXH64_state_t* state_in)
-{
- XXH_endianess endian_detected = (XXH_endianess)XXH_CPU_LITTLE_ENDIAN;
-
- if ((endian_detected==XXH_littleEndian) || XXH_FORCE_NATIVE_FORMAT)
- return XXH64_digest_endian(state_in, XXH_littleEndian);
- else
- return XXH64_digest_endian(state_in, XXH_bigEndian);
-}
-
-
projects / thirdparty / zstd.git / commitdiff
