| Oskar Schirmer | 8759ef3 | 2009-06-11 14:51:15 +0100 | [diff] [blame] | 1 | /* |
| 2 | * rational fractions |
| 3 | * |
| Oskar Schirmer | 6684b57 | 2012-05-16 09:41:19 +0000 | [diff] [blame] | 4 | * Copyright (C) 2009 emlix GmbH, Oskar Schirmer <oskar@scara.com> |
| Oskar Schirmer | 8759ef3 | 2009-06-11 14:51:15 +0100 | [diff] [blame] | 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 */ |