_mm_maskz_cvt_roundsd_sh
Classification
AVX-512, Convert, CPUID Test: AVX512_FP16
Header File
immintrin.h
Instruction
VCVTSD2SH xmm {z}, xmm, xmm {er}
Synopsis
 _mm_maskz_cvt_roundsd_sh(__mmask8 k, __m128h a, __m128d b, const int rounding);
Description
Convert the lower double-precision (64-bit) floating-point element in "b" to a half-precision (16-bit) floating-point elements, 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 7 packed elements from "a" to the upper element of "dst". [round_note]
Operation
IF k[0]
	dst.fp16[0] := Convert_FP64_To_FP16(b.fp64[0])
ELSE
	dst.fp16[0] := 0
FI
dst[127:16] := a[127:16]
dst[MAX:128] := 0