1 /* SPDX-License-Identifier: GPL-2.0 */
2 /*
3  * rational fractions
4  *
5  * Copyright (C) 2009 emlix GmbH, Oskar Schirmer <oskar@scara.com>
6  *
7  * helper functions when coping with rational numbers,
8  * e.g. when calculating optimum numerator/denominator pairs for
9  * pll configuration taking into account restricted register size
10  */
11 
12 #ifndef _LINUX_RATIONAL_H
13 #define _LINUX_RATIONAL_H
14 
15 void rational_best_approximation(
16 	unsigned long given_numerator, unsigned long given_denominator,
17 	unsigned long max_numerator, unsigned long max_denominator,
18 	unsigned long *best_numerator, unsigned long *best_denominator);
19 
20 #endif /* _LINUX_RATIONAL_H */
21