1 /* SPDX-License-Identifier: GPL-2.0 */
5 * Copyright (C) 2009 emlix GmbH, Oskar Schirmer <oskar@scara.com>
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
12 #ifndef _LINUX_RATIONAL_H
13 #define _LINUX_RATIONAL_H
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
);
20 #endif /* _LINUX_RATIONAL_H */