__declspec(align(16)) UINT x[4] = { 10, 12, 21, 24 };
__declspec(align(16)) UINT y[4] = { 5, 6, 7, 8 };
__declspec(align(16)) UINT z[4] = { 0, 0, 0, 0 };
__asm
{
lea esi, x
movaps xmm0, [esi]
divps xmm0, y
movaps z, xmm0 ; 结果是错的,必须是float类型
}
SSE不支持整数的除法运算是么?
------解决方案--------------------
你可以:
__asm
{
movdqa xmm1, y // movdqa xmm1, xmmword ptr y
movdqa xmm0, x // movdqa xmm0, xmmword ptr x
cvtdq2ps xmm1, xmm1
cvtdq2ps xmm0, xmm0
divps xmm0, xmm1
cvtps2dq xmm0, xmm0
movdqa z, xmm0
}
不过这要求y、y、z是signed int。