AVX_ALL-Probability/Statistics-YMM#

_mm256_avg_epu8#

__m256i _mm256_avg_epu8(__m256i a, __m256i b);

Intel Description

Average packed unsigned 8-bit integers in “a” and “b”, and store the results in “dst”.

Intel Implementation Psudeo-Code

FOR j := 0 to 31
        i := j*8
        dst[i+7:i] := (a[i+7:i] + b[i+7:i] + 1) >> 1
ENDFOR
dst[MAX:256] := 0

__m256i _mm256_avg_epu16(__m256i a, __m256i b);

Intel Description

Average packed unsigned 16-bit integers in “a” and “b”, and store the results in “dst”.

Intel Implementation Psudeo-Code

FOR j := 0 to 15
        i := j*16
        dst[i+15:i] := (a[i+15:i] + b[i+15:i] + 1) >> 1
ENDFOR
dst[MAX:256] := 0