_mm_maskz_cvt_roundsh_sd
Classification
AVX-512, Convert, CPUID Test: AVX512_FP16
Header File
immintrin.h
Instruction
VCVTSH2SD xmm {z}, xmm, xmm {sae}
Synopsis
 _mm_maskz_cvt_roundsh_sd(__mmask8 k, __m128d a, __m128h b, const int sae);
Description
Convert the lower half-precision (16-bit) floating-point element in "b" to a double-precision (64-bit) floating-point element, store the result in the lower element of "dst" using zeromask "k" (the element is zeroed out when mask bit 0 is not set), and copy the upper element from "a" to the upper element of "dst". [sae_note]
Operation
IF k[0]
	dst.fp64[0] := Convert_FP16_To_FP64(b.fp16[0])
ELSE
	dst.fp64[0] := 0
FI
dst[127:64] := a[127:64]
dst[MAX:128] := 0