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