_mm_round_sd
Classification
SSE_ALL, Special Math Functions, CPUID Test: SSE4.1
Header File
smmintrin.h
Instruction
ROUNDSD xmm, xmm, imm8
Synopsis
 _mm_round_sd(__m128d a, __m128d b, int rounding);
Description
Round the lower double-precision (64-bit) floating-point element in "b" using the "rounding" parameter, store the result as a double-precision floating-point element 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] := ROUND(b[63:0], rounding)
dst[127:64] := a[127:64]