_mm512_maskz_rorv_epi64
Classification
AVX-512, Shift, CPUID Test: AVX512F
Header File
Instruction
VPRORVQ zmm {z}, zmm, zmm
Synopsis
_mm512_maskz_rorv_epi64(__mmask8 k, __m512i a, __m512i b);
Description
Rotate the bits in each packed 64-bit integer in "a" to the right by the number of bits specified in the corresponding element of "b", and store the results in "dst" using zeromask "k" (elements are zeroed out when the corresponding mask bit is not set).
Operation
DEFINE RIGHT_ROTATE_QWORDS(src, count_src) {
count := count_src % 64
RETURN (src >> count) OR (src << (64 - count))
}
FOR j := 0 to 7
i := j*64
IF k[j]
dst[i+63:i] := RIGHT_ROTATE_QWORDS(a[i+63:i], b[i+63:i])
ELSE
dst[i+63:i] := 0
FI
ENDFOR
dst[MAX:512] := 0