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struct fl4{ float x, y, z, w; }; | |
void asm_test(void) | |
{ | |
struct fl4 v1, v2, v3; | |
v1.x = 0.1; | |
v1.y = 0.2; | |
v1.z = 0.4; | |
v1.w = 0.3; | |
v2.x = 0.11; | |
v2.y = 0.0; | |
v2.z = 0.01; | |
v2.w = 0.04; | |
asm volatile ( | |
"movups %0, %%xmm0;" | |
"movups %1, %%xmm1;" | |
"addps %%xmm1, %%xmm0;" | |
"movups %%xmm0, %2" | |
: | |
: "g" (v1), "g" (v2), "g" (v3) | |
: "memory" | |
); | |
printf("sse fl4 add : %f %f %f %f\n", v3.x, v3.y, v3.z, v3.w); | |
printf("expected : %f %f %f %f\n", v1.x+v2.x, v1.y+v2.y, v1.z+v2.z, v1.w+v2.w); | |
} |
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sse fl4 add : 0.210000 0.200000 0.410000 0.340000
expected : 0.210000 0.200000 0.410000 0.340000