_mm256_mask_cmp_epi64_mask
Classification
AVX-512, Compare, CPUID Test: AVX512F
Header File
Instruction
VPCMPQ k {k}, ymm, ymm, imm8
Synopsis
_mm256_mask_cmp_epi64_mask(__mmask8 k1, __m256i a, __m256i b, _MM_CMPINT_ENUM imm8);
Description
Compare packed signed 64-bit integers in "a" and "b" based on the comparison operand specified by "imm8", and store the results in mask vector "k" using zeromask "k1" (elements are zeroed out when the corresponding mask bit is not set).
Operation
CASE (imm8[2:0]) OF
0: OP := _MM_CMPINT_EQ
1: OP := _MM_CMPINT_LT
2: OP := _MM_CMPINT_LE
3: OP := _MM_CMPINT_FALSE
4: OP := _MM_CMPINT_NE
5: OP := _MM_CMPINT_NLT
6: OP := _MM_CMPINT_NLE
7: OP := _MM_CMPINT_TRUE
ESAC
FOR j := 0 to 3
i := j*64
IF k1[j]
k[j] := ( a[i+63:i] OP b[i+63:i] ) ? 1 : 0
ELSE
k[j] := 0
FI
ENDFOR
k[MAX:4] := 0