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b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
8759ef32 OS |
2 | /* |
3 | * rational fractions | |
4 | * | |
6684b572 | 5 | * Copyright (C) 2009 emlix GmbH, Oskar Schirmer <oskar@scara.com> |
8759ef32 OS |
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 | ||
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); | |
19 | ||
20 | #endif /* _LINUX_RATIONAL_H */ |