_mm_cvt_roundsh_sd
Classification
AVX-512, Convert, CPUID Test: AVX512_FP16
Header File
Instruction
VCVTSH2SD xmm, xmm, xmm {sae}
Synopsis
_mm_cvt_roundsh_sd(__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", and copy the upper element from "a" to the upper element of "dst". [sae_note]
Operation
dst.fp64[0] := Convert_FP16_To_FP64(b.fp16[0])
dst[127:64] := a[127:64]
dst[MAX:128] := 0