L_RSHIFT
L_RSHIFT(ftemp, pps_shift);
L_RSHIFT(ftemp, SHIFT_PLL + time_constant);
L_RSHIFT(ftemp, SHIFT_PLL + time_constant);
L_RSHIFT(ftemp, (SHIFT_PLL + 2 + time_constant) << 1);
L_RSHIFT(ftemp, SHIFT_FLL + 4);
L_RSHIFT(ftemp, pps_shift);