mpz_div_q_2exp   2486 lib/mini-gmp.c   mpz_div_q_2exp (r, u, cnt, GMP_DIV_CEIL);
mpz_div_q_2exp   2492 lib/mini-gmp.c   mpz_div_q_2exp (r, u, cnt, GMP_DIV_FLOOR);
mpz_div_q_2exp   2498 lib/mini-gmp.c   mpz_div_q_2exp (r, u, cnt, GMP_DIV_TRUNC);