_mm256_fpclass_pd_mask
Classification
AVX-512, Miscellaneous, CPUID Test: AVX512DQ
Header File
immintrin.h
Instruction
VFPCLASSPD k, ymm, imm8
Synopsis
 _mm256_fpclass_pd_mask(__m256d a, int imm8);
Description
Test packed double-precision (64-bit) floating-point elements in "a" for special categories specified by "imm8", and store the results in mask vector "k". [fpclass_note]
Operation
FOR j := 0 to 3
	i := j*64
	k[j] := CheckFPClass_FP64(a[i+63:i], imm8[7:0])
ENDFOR
k[MAX:4] := 0