daiduo/TurboPFor-Integer-Compression
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

BitUtil: c/c++ header

Browse Source
This commit is contained in:
x
2018-03-09 17:57:51 +01:00
parent 26365470a2
commit c536cd6d05
1 changed files with 2 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

3
bitutil.h
View File

@ -52,7 +52,7 @@
#define BITSIZE64(_in_, _n_, _b_) BITSIZE_(_in_, _n_, _b_, 64)
static inline unsigned char zigzagenc8( char x) { return x << 1 ^ x >> 7; }
static inline char zigzagdec8( unsigned char x) { return x >> 1 ^ -(x & 1); }
static inline char zigzagdec8( unsigned char x) { return x >> 1 ^ -(x & 1); }
static inline unsigned short zigzagenc16(short x) { return x << 1 ^ x >> 15; }
static inline short zigzagdec16(unsigned short x) { return x >> 1 ^ -(x & 1); }
@ -94,6 +94,7 @@ static inline int64_t zigzagdec64(uint64_t x) { return x >> 1 ^
#include <tmmintrin.h>
#define DELTA128x16(_v_, _sv_) _mm_sub_epi16(_v_, _mm_alignr_epi8(_v_, _sv_, 14))
#define DELTA128x32(_v_, _sv_) _mm_sub_epi32(_v_, _mm_alignr_epi8(_v_, _sv_, 12))
// SIMD Scan ( prefix sum )
#define SCAN128x16( _v_, _sv_) {\
_v_ = _mm_add_epi16(_v_, _mm_slli_si128(_v_, 2));\