_mm_mask_fpclass_sd_mask
Classification
AVX-512, Miscellaneous, CPUID Test: AVX512DQ
Header File
immintrin.h
Instruction
VFPCLASSSD k {k}, xmm, imm8
Synopsis
 _mm_mask_fpclass_sd_mask(__mmask8 k1, __m128d a, int imm8);
Description
Test the lower double-precision (64-bit) floating-point element in "a" for special categories specified by "imm8", and store the result in mask vector "k" using zeromask "k1" (the element is zeroed out when mask bit 0 is not set). [fpclass_note]
Operation
IF k1[0]
	k[0] := CheckFPClass_FP64(a[63:0], imm8[7:0])
ELSE
	k[0] := 0
FI
k[MAX:1] := 0