regmap: allow regmap instances to be named
[linux-2.6.git] / include / linux / rational.h
1 /*
2  * rational fractions
3  *
4  * Copyright (C) 2009 emlix GmbH, Oskar Schirmer <os@emlix.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 */