MPN_ZERO
MPN_ZERO (prodp, usize);
MPN_ZERO (prodp, size);
MPN_ZERO (prodp, size);
MPN_ZERO (prodp, usize);
MPN_ZERO (p.frac, (p.exponent + to_shift) / BITS_PER_MP_LIMB);
MPN_ZERO (p.tmp, _FPIO_CONST_SHIFT);
MPN_ZERO (retval, idx);
MPN_ZERO (retval, RETURN_LIMB_SIZE - numsize);
MPN_ZERO (retval, RETURN_LIMB_SIZE - numsize);
MPN_ZERO (retval, RETURN_LIMB_SIZE - numsize - 1);
MPN_ZERO (num, empty + 1);
MPN_ZERO (num, empty + 1);
MPN_ZERO (retval, RETURN_LIMB_SIZE);
MPN_ZERO (&retval[RETURN_LIMB_SIZE - (shift / BITS_PER_MP_LIMB)],