3. Briefly describe what f does void f(byte yp, word 'ap, int n) register int xo, xl; register long yo, yl, dy; x0 = *ap++; y0 = (long) *ap++ while (n-- >1) x0) (8* (sizeof (yo-sizeof*ap) ) ; dy = (yi - y0 ) / (x1 -x0); while (xoxi) i yp[x0++] y0 >> (8* (sizeof (yo)-sizeof*yp)); = y0 += dy