_mm_cvt_roundi64_sd
Classification
AVX-512, Convert, CPUID Test: AVX512F
Header File
immintrin.h
Instruction
VCVTSI2SD xmm, xmm, r64 {er}
Synopsis
 _mm_cvt_roundi64_sd(__m128d a, __int64 b, int rounding);
Description
Convert the signed 64-bit integer "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". [round_note]
Operation
dst[63:0] := Convert_Int64_To_FP64(b[63:0])
dst[127:64] := a[127:64]
dst[MAX:128] := 0