_mm_cvt_roundss_sd
Classification
AVX-512, Convert, CPUID Test: AVX512F
Header File
immintrin.h
Instruction
VCVTSS2SD xmm, xmm, xmm {sae}
Synopsis
 _mm_cvt_roundss_sd(__m128d a, __m128 b, int sae);
Description
Convert the lower single-precision (32-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[63:0] := Convert_FP32_To_FP64(b[31:0])
dst[127:64] := a[127:64]
dst[MAX:128] := 0