daiduo/TurboPFor-Integer-Compression
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powturbo
2015-05-31 21:50:39 +02:00
parent 504931f3c4
commit a0d58e89ca
1 changed files with 10 additions and 1 deletions
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11
vint.h
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@ -50,6 +50,15 @@ extern unsigned long long mtab[];
#define vbgeta(__ip, __x, __act) do { unsigned _vdx=(*__ip)&0xf; __x = _pext_u64(*(unsigned long long *)__ip, mtab[_vdx]); __ip+=vtab[_vdx]; __act; } while(0) #define vbgeta(__ip, __x, __act) do { unsigned _vdx=(*__ip)&0xf; __x = _pext_u64(*(unsigned long long *)__ip, mtab[_vdx]); __ip+=vtab[_vdx]; __act; } while(0)
#else #else
#if 1
#define vbgeta(__ip, __x, __act) do {\
if(!((__x = *__ip) & (1<<0))) { __ip++; __x >>= 1; __act;}\
else if(!(__x & (1<<1))) { __x = (*(unsigned short *)__ip) >> 2; __ip += 2; __act;}\
else if(!(__x & (1<<2))) { __x = (*(unsigned short *)__ip) >> 3 | *(__ip+2) << 13; __ip += 3; __act;}\
else if(!(__x & (1<<3))) { __x = (*(unsigned *)__ip) >> 4; __ip += 4; __act;}\
else { __x = (*(unsigned *)__ip) >> 4 | *(__ip+4) << 28; __ip += 5; __act;}\
} while(0)
#else
#define vbgeta(__ip, __x, __act) do {\ #define vbgeta(__ip, __x, __act) do {\
if(!((__x = *__ip) & (1<<0))) { __ip++; __x >>= 1; __act;}\ if(!((__x = *__ip) & (1<<0))) { __ip++; __x >>= 1; __act;}\
else if(!((__x = *(unsigned short *)__ip) & (1<<1))) { __ip += 2; __x >>= 2; __act;}\ else if(!((__x = *(unsigned short *)__ip) & (1<<1))) { __ip += 2; __x >>= 2; __act;}\
@ -57,7 +66,7 @@ extern unsigned long long mtab[];
else if(!((__x = *(unsigned *)__ip) & (1<<3))) { __ip += 4; __x >>= 4; __act;}\ else if(!((__x = *(unsigned *)__ip) & (1<<3))) { __ip += 4; __x >>= 4; __act;}\
else { __ip += 5; __x = __x >> 4 | (unsigned)__ip[-1] << 28; __act;}\ else { __ip += 5; __x = __x >> 4 | (unsigned)__ip[-1] << 28; __act;}\
} while(0) } while(0)
#endif
#endif #endif
//------------------------------------------------------------------------------------------------------------------------ //------------------------------------------------------------------------------------------------------------------------
extern unsigned char vtab[]; extern unsigned char vtab[];