diff options
Diffstat (limited to 'tests/make_png/murmur3.c')
| -rw-r--r-- | tests/make_png/murmur3.c | 89 |
1 files changed, 42 insertions, 47 deletions
diff --git a/tests/make_png/murmur3.c b/tests/make_png/murmur3.c index 484ebfd03..6698c09d5 100644 --- a/tests/make_png/murmur3.c +++ b/tests/make_png/murmur3.c @@ -1,45 +1,40 @@ -//----------------------------------------------------------------------------- -// Note - The x86 and x64 versions do _not_ produce the same results, as the -// algorithms are optimized for their respective platforms. You can still -// compile and run any of them on any platform, but your performance with the -// non-native version will be less than optimal. +/*------------------------------------------------------------------*/ +/* Note - The x86 and x64 versions do _not_ produce the same */ +/* results, as the algorithms are optimized for their respective */ +/* platforms. You can still compile and run any of them on any */ +/* platform, but your performance with the non-native version */ +/* will be less than optimal. */ #include "murmur3.h" -//----------------------------------------------------------------------------- -// Platform-specific functions and macros +/*------------------------------------------------------------------*/ +/* Platform-specific functions and macros */ -#ifdef __GNUC__ -#define FORCE_INLINE __attribute__((always_inline)) inline -#else -#define FORCE_INLINE inline -#endif - -static FORCE_INLINE uint32_t rotl32 ( uint32_t x, int8_t r ) +static uint32_t rotl32 ( uint32_t x, int8_t r ) { return (x << r) | (x >> (32 - r)); } -static FORCE_INLINE uint64_t rotl64 ( uint64_t x, int8_t r ) +static uint64_t rotl64 ( uint64_t x, int8_t r ) { return (x << r) | (x >> (64 - r)); } -#define ROTL32(x,y) rotl32(x,y) -#define ROTL64(x,y) rotl64(x,y) +#define ROTL32(x,y) rotl32(x,y) +#define ROTL64(x,y) rotl64(x,y) #define BIG_CONSTANT(x) (x##LLU) -//----------------------------------------------------------------------------- -// Block read - if your platform needs to do endian-swapping or can only -// handle aligned reads, do the conversion here +/*------------------------------------------------------------------*/ +/* Block read - if your platform needs to do endian-swapping or can */ +/* only handle aligned reads, do the conversion here */ #define getblock(p, i) (p[i]) -//----------------------------------------------------------------------------- -// Finalization mix - force all bits of a hash block to avalanche +/*------------------------------------------------------------------*/ +/* Finalization mix - force all bits of a hash block to avalanche */ -static FORCE_INLINE uint32_t fmix32 ( uint32_t h ) +static uint32_t fmix32 ( uint32_t h ) { h ^= h >> 16; h *= 0x85ebca6b; @@ -50,9 +45,9 @@ static FORCE_INLINE uint32_t fmix32 ( uint32_t h ) return h; } -//---------- +/*----------*/ -static FORCE_INLINE uint64_t fmix64 ( uint64_t k ) +static uint64_t fmix64 ( uint64_t k ) { k ^= k >> 33; k *= BIG_CONSTANT(0xff51afd7ed558ccd); @@ -63,7 +58,7 @@ static FORCE_INLINE uint64_t fmix64 ( uint64_t k ) return k; } -//----------------------------------------------------------------------------- +/*------------------------------------------------------------------*/ void MurmurHash3_x86_32 ( const void * key, int len, uint32_t seed, void * out ) @@ -77,8 +72,8 @@ void MurmurHash3_x86_32 ( const void * key, int len, uint32_t c1 = 0xcc9e2d51; uint32_t c2 = 0x1b873593; - //---------- - // body + /*----------*/ + /* body */ const uint32_t * blocks = (const uint32_t *)(data + nblocks*4); @@ -95,8 +90,8 @@ void MurmurHash3_x86_32 ( const void * key, int len, h1 = h1*5+0xe6546b64; } - //---------- - // tail + /*----------*/ + /* tail */ const uint8_t * tail = (const uint8_t*)(data + nblocks*4); @@ -110,8 +105,8 @@ void MurmurHash3_x86_32 ( const void * key, int len, k1 *= c1; k1 = ROTL32(k1,15); k1 *= c2; h1 ^= k1; }; - //---------- - // finalization + /*----------*/ + /* finalization */ h1 ^= len; @@ -120,7 +115,7 @@ void MurmurHash3_x86_32 ( const void * key, int len, *(uint32_t*)out = h1; } -//----------------------------------------------------------------------------- +/*------------------------------------------------------------------*/ void MurmurHash3_x86_128 ( const void * key, const int len, uint32_t seed, void * out ) @@ -139,8 +134,8 @@ void MurmurHash3_x86_128 ( const void * key, const int len, uint32_t c3 = 0x38b34ae5; uint32_t c4 = 0xa1e38b93; - //---------- - // body + /*----------*/ + /* body */ const uint32_t * blocks = (const uint32_t *)(data + nblocks*16); @@ -168,8 +163,8 @@ void MurmurHash3_x86_128 ( const void * key, const int len, h4 = ROTL32(h4,13); h4 += h1; h4 = h4*5+0x32ac3b17; } - //---------- - // tail + /*----------*/ + /* tail */ const uint8_t * tail = (const uint8_t*)(data + nblocks*16); @@ -204,8 +199,8 @@ void MurmurHash3_x86_128 ( const void * key, const int len, k1 *= c1; k1 = ROTL32(k1,15); k1 *= c2; h1 ^= k1; }; - //---------- - // finalization + /*----------*/ + /* finalization */ h1 ^= len; h2 ^= len; h3 ^= len; h4 ^= len; @@ -226,7 +221,7 @@ void MurmurHash3_x86_128 ( const void * key, const int len, ((uint32_t*)out)[3] = h4; } -//----------------------------------------------------------------------------- +/*------------------------------------------------------------------*/ void MurmurHash3_x64_128 ( const void * key, const int len, const uint32_t seed, void * out ) @@ -241,8 +236,8 @@ void MurmurHash3_x64_128 ( const void * key, const int len, uint64_t c1 = BIG_CONSTANT(0x87c37b91114253d5); uint64_t c2 = BIG_CONSTANT(0x4cf5ad432745937f); - //---------- - // body + /*----------*/ + /* body */ const uint64_t * blocks = (const uint64_t *)(data); @@ -260,8 +255,8 @@ void MurmurHash3_x64_128 ( const void * key, const int len, h2 = ROTL64(h2,31); h2 += h1; h2 = h2*5+0x38495ab5; } - //---------- - // tail + /*----------*/ + /* tail */ const uint8_t * tail = (const uint8_t*)(data + nblocks*16); @@ -290,8 +285,8 @@ void MurmurHash3_x64_128 ( const void * key, const int len, k1 *= c1; k1 = ROTL64(k1,31); k1 *= c2; h1 ^= k1; }; - //---------- - // finalization + /*----------*/ + /* finalization*/ h1 ^= len; h2 ^= len; @@ -308,5 +303,5 @@ void MurmurHash3_x64_128 ( const void * key, const int len, ((uint64_t*)out)[1] = h2; } -//----------------------------------------------------------------------------- +/*------------------------------------------------------------------*/ |