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 14void 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 */ 20