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BitUtil: c/c++ header

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2018-01-21 19:51:58 +01:00
parent 92ab87d5b0
commit ab72896537
1 changed files with 5 additions and 7 deletions
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12
bitutil.h
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@ -52,27 +52,25 @@
#define BITSIZE64(_in_, _n_, _b_) BITSIZE_(_in_, _n_, _b_, 64)
static inline unsigned char zigzagenc8( char x) { return x << 1 ^ x >> 7; }
static inline unsigned char zigzagdec8( unsigned short x) { return x >> 1 ^ -(x & 1); }
static inline char zigzagdec8( unsigned short x) { return x >> 1 ^ -(x & 1); }
static inline unsigned short zigzagenc16(short x) { return x << 1 ^ x >> 15; }
static inline unsigned short zigzagdec16(unsigned short x) { return x >> 1 ^ -(x & 1); }
static inline short zigzagdec16(unsigned short x) { return x >> 1 ^ -(x & 1); }
static inline unsigned zigzagenc31(int x) { x = (x << 2 | ((x>>30)& 2)) ^ x >> 31; return x; } // for signed x
static inline unsigned zigzagdec31(unsigned x) { return (x >> 2 | (x& 2)<<30 ) ^ -(x & 1); }
static inline unsigned long long zigzagenc63(long long x) { x = (x << 2 | ((x>>62)& 2)) ^ x >> 63; return x; } // for signed x
static inline unsigned long long zigzagdec63(unsigned long long x) { return (x >> 2 | (x& 2)<<62 ) ^ -(x & 1); }
static inline long long zigzagdec63(unsigned long long x) { return (x >> 2 | (x& 2)<<62 ) ^ -(x & 1); }
static inline unsigned zigzagenc32(int x) { return x << 1 ^ x >> 31; }
static inline unsigned zigzagdec32(unsigned x) { return x >> 1 ^ -(x & 1); }
static inline int zigzagdec32(unsigned x) { return x >> 1 ^ -(x & 1); }
static inline uint64_t zigzagenc64(int64_t x) { return x << 1 ^ x >> 63; }
static inline uint64_t zigzagdec64(uint64_t x) { return x >> 1 ^ -(x & 1); }
static inline int64_t zigzagdec64(uint64_t x) { return x >> 1 ^ -(x & 1); }
#ifdef __AVX2__
#include <immintrin.h>
#define DELTA256x320(_v_, _sv_) _mm256_sub_epi32(_v_, _mm256_or_si256(_mm256_srli_si256( _mm256_permute2x128_si256(_sv_, _sv_, _MM_SHUFFLE(2, 0, 0, 1)), 12),\
_mm256_alignr_epi8(_v_, _mm256_permute2x128_si256(_v_, _v_, _MM_SHUFFLE(0, 0, 2, 0)), 12)))
#define DELTA256x32(_v_, _sv_) _mm256_sub_epi32(_v_, _mm256_alignr_epi8(_v_, _mm256_permute2f128_si256(_sv_, _v_, _MM_SHUFFLE(0, 2, 0, 1)), 12))
#define SCAN256x32( _v_, _sv_) {\