From c536cd6d051681275dec90de37507c19d243d5ed Mon Sep 17 00:00:00 2001 From: x Date: Fri, 9 Mar 2018 17:57:51 +0100 Subject: [PATCH] BitUtil: c/c++ header --- bitutil.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/bitutil.h b/bitutil.h index 9fd8e45..5cf0bb5 100644 --- a/bitutil.h +++ b/bitutil.h @@ -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 #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));\