rational.h

 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
15void 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 */