4 * Copyright (C) 2009 emlix GmbH, Oskar Schirmer <os@emlix.com>
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
11 #ifndef _LINUX_RATIONAL_H
12 #define _LINUX_RATIONAL_H
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
);
19 #endif /* _LINUX_RATIONAL_H */
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