_mm_addsub_pd
Classification
SSE_ALL, Arithmetic, CPUID Test: SSE3
Header File
Instruction
ADDSUBPD xmm, xmm
Synopsis
_mm_addsub_pd(__m128d a, __m128d b);
Description
Alternatively add and subtract packed double-precision (64-bit) floating-point elements in "a" to/from packed elements in "b", and store the results in "dst".
Operation
FOR j := 0 to 1
i := j*64
IF ((j & 1) == 0)
dst[i+63:i] := a[i+63:i] - b[i+63:i]
ELSE
dst[i+63:i] := a[i+63:i] + b[i+63:i]
FI
ENDFOR