1 /*
2     Copyright (C) 2019 Fredrik Johansson
3 
4     This file is part of Arb.
5 
6     Arb is free software: you can redistribute it and/or modify it under
7     the terms of the GNU Lesser General Public License (LGPL) as published
8     by the Free Software Foundation; either version 2.1 of the License, or
9     (at your option) any later version.  See <http://www.gnu.org/licenses/>.
10 */
11 
12 #include "arb.h"
13 
14 int
arb_sgn_nonzero(const arb_t x)15 arb_sgn_nonzero(const arb_t x)
16 {
17     if (arb_is_positive(x))
18         return 1;
19     else if (arb_is_negative(x))
20         return -1;
21     else
22         return 0;
23 }
24