diff options
Diffstat (limited to 'src/zix/digest.c')
| -rw-r--r-- | src/zix/digest.c | 120 |
1 files changed, 60 insertions, 60 deletions
diff --git a/src/zix/digest.c b/src/zix/digest.c index 8d08ae2..47d27b9 100644 --- a/src/zix/digest.c +++ b/src/zix/digest.c @@ -17,7 +17,7 @@ #include "zix/digest.h" #ifdef __SSE4_2__ -# include <smmintrin.h> +# include <smmintrin.h> #endif #include <assert.h> @@ -30,75 +30,75 @@ uint32_t zix_digest_start(void) { - return 1; + return 1; } uint32_t zix_digest_add(uint32_t hash, const void* const buf, const size_t len) { - const uint8_t* str = (const uint8_t*)buf; - -#ifdef __x86_64__ - for (size_t i = 0; i < (len / sizeof(uint64_t)); ++i) { - hash = (uint32_t)_mm_crc32_u64(hash, *(const uint64_t*)str); - str += sizeof(uint64_t); - } - if (len & sizeof(uint32_t)) { - hash = _mm_crc32_u32(hash, *(const uint32_t*)str); - str += sizeof(uint32_t); - } -#else - for (size_t i = 0; i < (len / sizeof(uint32_t)); ++i) { - hash = _mm_crc32_u32(hash, *(const uint32_t*)str); - str += sizeof(uint32_t); - } -#endif - if (len & sizeof(uint16_t)) { - hash = _mm_crc32_u16(hash, *(const uint16_t*)str); - str += sizeof(uint16_t); - } - if (len & sizeof(uint8_t)) { - hash = _mm_crc32_u8(hash, *(const uint8_t*)str); - } - - return hash; + const uint8_t* str = (const uint8_t*)buf; + +# ifdef __x86_64__ + for (size_t i = 0; i < (len / sizeof(uint64_t)); ++i) { + hash = (uint32_t)_mm_crc32_u64(hash, *(const uint64_t*)str); + str += sizeof(uint64_t); + } + if (len & sizeof(uint32_t)) { + hash = _mm_crc32_u32(hash, *(const uint32_t*)str); + str += sizeof(uint32_t); + } +# else + for (size_t i = 0; i < (len / sizeof(uint32_t)); ++i) { + hash = _mm_crc32_u32(hash, *(const uint32_t*)str); + str += sizeof(uint32_t); + } +# endif + if (len & sizeof(uint16_t)) { + hash = _mm_crc32_u16(hash, *(const uint16_t*)str); + str += sizeof(uint16_t); + } + if (len & sizeof(uint8_t)) { + hash = _mm_crc32_u8(hash, *(const uint8_t*)str); + } + + return hash; } uint32_t zix_digest_add_64(uint32_t hash, const void* const buf, const size_t len) { - assert((uintptr_t)buf % sizeof(uint64_t) == 0); - assert(len % sizeof(uint64_t) == 0); + assert((uintptr_t)buf % sizeof(uint64_t) == 0); + assert(len % sizeof(uint64_t) == 0); -#ifdef __x86_64__ - const uint64_t* ptr = (const uint64_t*)buf; +# ifdef __x86_64__ + const uint64_t* ptr = (const uint64_t*)buf; - for (size_t i = 0; i < (len / sizeof(uint64_t)); ++i) { - hash = (uint32_t)_mm_crc32_u64(hash, *ptr); - ++ptr; - } + for (size_t i = 0; i < (len / sizeof(uint64_t)); ++i) { + hash = (uint32_t)_mm_crc32_u64(hash, *ptr); + ++ptr; + } - return hash; -#else - const uint32_t* ptr = (const uint32_t*)buf; + return hash; +# else + const uint32_t* ptr = (const uint32_t*)buf; - for (size_t i = 0; i < (len / sizeof(uint32_t)); ++i) { - hash = _mm_crc32_u32(hash, *ptr); - ++ptr; - } + for (size_t i = 0; i < (len / sizeof(uint32_t)); ++i) { + hash = _mm_crc32_u32(hash, *ptr); + ++ptr; + } - return hash; -#endif + return hash; +# endif } uint32_t zix_digest_add_ptr(const uint32_t hash, const void* const ptr) { -#ifdef __x86_64__ - return (uint32_t)_mm_crc32_u64(hash, (uintptr_t)ptr); -#else - return _mm_crc32_u32(hash, (uintptr_t)ptr); -#endif +# ifdef __x86_64__ + return (uint32_t)_mm_crc32_u64(hash, (uintptr_t)ptr); +# else + return _mm_crc32_u32(hash, (uintptr_t)ptr); +# endif } #else @@ -108,34 +108,34 @@ zix_digest_add_ptr(const uint32_t hash, const void* const ptr) uint32_t zix_digest_start(void) { - return 5381; + return 5381; } uint32_t zix_digest_add(uint32_t hash, const void* const buf, const size_t len) { - const uint8_t* str = (const uint8_t*)buf; + const uint8_t* str = (const uint8_t*)buf; - for (size_t i = 0; i < len; ++i) { - hash = (hash << 5u) + hash + str[i]; - } + for (size_t i = 0; i < len; ++i) { + hash = (hash << 5u) + hash + str[i]; + } - return hash; + return hash; } uint32_t zix_digest_add_64(uint32_t hash, const void* const buf, const size_t len) { - assert((uintptr_t)buf % sizeof(uint64_t) == 0); - assert(len % sizeof(uint64_t) == 0); + assert((uintptr_t)buf % sizeof(uint64_t) == 0); + assert(len % sizeof(uint64_t) == 0); - return zix_digest_add(hash, buf, len); + return zix_digest_add(hash, buf, len); } uint32_t zix_digest_add_ptr(const uint32_t hash, const void* const ptr) { - return zix_digest_add(hash, &ptr, sizeof(ptr)); + return zix_digest_add(hash, &ptr, sizeof(ptr)); } #endif |