_mm_round_ss
Classification
SSE_ALL, Special Math Functions, CPUID Test: SSE4.1
Header File
smmintrin.h
Instruction
ROUNDSS xmm, xmm, imm8
Synopsis
 _mm_round_ss(__m128 a, __m128 b, int rounding);
Description
Round the lower single-precision (32-bit) floating-point element in "b" using the "rounding" parameter, store the result as a single-precision floating-point element in the lower element of "dst", and copy the upper 3 packed elements from "a" to the upper elements of "dst". [round_note]
Operation
dst[31:0] := ROUND(b[31:0], rounding)
dst[127:32] := a[127:32]