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/* Arithmetic.
Copyright (C) 2001-2002, 2006, 2009-2016 Free Software Foundation, Inc.
Written by Bruno Haible <bruno@clisp.org>, 2001.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
#ifndef _GCD_H
#define _GCD_H
#ifdef __cplusplus
extern "C" {
#endif
/* Return the greatest common divisor of a > 0 and b > 0. */
extern unsigned long gcd (unsigned long a, unsigned long b);
#ifdef __cplusplus
}
#endif
#endif /* _GCD_H */
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