_mm_maskz_cvtsh_ss
Classification
AVX-512, Convert, CPUID Test: AVX512_FP16
Header File
Instruction
VCVTSH2SS xmm {z}, xmm, xmm
Synopsis
_mm_maskz_cvtsh_ss(__mmask8 k, __m128 a, __m128h b);
Description
Convert the lower half-precision (16-bit) floating-point element in "b" to a single-precision (32-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 3 packed elements from "a" to the upper elements of "dst".
Operation
IF k[0]
dst.fp32[0] := Convert_FP16_To_FP32(b.fp16[0])
ELSE
dst.fp32[0] := 0
FI
dst[127:32] := a[127:32]
dst[MAX:128] := 0