mpz_div_q_2exp   2493 lib/mini-gmp.c   mpz_div_q_2exp (r, u, cnt, GMP_DIV_CEIL);
mpz_div_q_2exp   2499 lib/mini-gmp.c   mpz_div_q_2exp (r, u, cnt, GMP_DIV_FLOOR);
mpz_div_q_2exp   2505 lib/mini-gmp.c   mpz_div_q_2exp (r, u, cnt, GMP_DIV_TRUNC);