void cond_loop_c(float *a, float *b, float *c, float *d, float *e, int length){ //RDI, RSI, RDX, RCX, R8, R9
    int i;
    for(i=0;i<length;++i){
        if(a[i]<0)
            b[i] = c[i]*d[i];
        else
            b[i] = c[i] * e[i];
    }
}