| Tero Kristo | 7d0f3fb | 2021-06-11 11:45:02 +0300 | [diff] [blame] | 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 | |
| 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 */ |