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TurboPFor: Elias fano encode/decode

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2017-01-05 17:19:36 +01:00
parent 387a8c4690
commit 822a391616
1 changed files with 7 additions and 4 deletions
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11
eliasfano.c
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@ -23,7 +23,7 @@
**/ **/
// eliasfano.c - "Integer Compression" Elias Fano // eliasfano.c - "Integer Compression" Elias Fano
#ifndef USIZE //------------------------------------ functions ----------------------------------------------------------------- #ifndef USIZE
#include <stdint.h> #include <stdint.h>
#include <string.h> #include <string.h>
#ifdef __SSE2__ #ifdef __SSE2__
@ -90,6 +90,7 @@ static inline unsigned long long blsr(unsigned long long x) { return x & (x - 1)
#undef EFANODEC #undef EFANODEC
//---------------------- //----------------------
#ifndef NSIMD
#define VSIZE 128 #define VSIZE 128
#define BITPACK bitpack128v #define BITPACK bitpack128v
#define BITUNPACK bitunpack128v #define BITUNPACK bitunpack128v
@ -105,7 +106,7 @@ static inline unsigned long long blsr(unsigned long long x) { return x & (x - 1)
#undef EFANOENC #undef EFANOENC
#undef EFANODEC #undef EFANODEC
//------------------------------------------ #ifdef __SSE2__
#define EF_INC 0 #define EF_INC 0
#define EFANOENC efanoenc128v #define EFANOENC efanoenc128v
#define EFANODEC efanodec128v #define EFANODEC efanodec128v
@ -114,8 +115,10 @@ static inline unsigned long long blsr(unsigned long long x) { return x & (x - 1)
#include __FILE__ #include __FILE__
#undef USIZE #undef USIZE
#undef VSIZE #undef VSIZE
#endif
#endif
#else //--------------------------------------------- implementation --------------------------------------------------------------- #else //--------------------------------------------- implementation ---------------------------------------------------------------
#define uint_t TEMPLATE3(uint, USIZE, _t) #define uint_t TEMPLATE3(uint, USIZE, _t)
#pragma clang diagnostic push #pragma clang diagnostic push
@ -186,4 +189,4 @@ unsigned char *TEMPLATE2(EFANODEC, USIZE)(unsigned char *__restrict in, unsigned
e:return ip + PAD8((EFE(out,n-1,start)>>lb)+n); e:return ip + PAD8((EFE(out,n-1,start)>>lb)+n);
} }
#pragma clang diagnostic pop #pragma clang diagnostic pop
#endif #endif