linux-sg2042/include/linux/rational.h

20 lines
600 B
C

/*
* rational fractions
*
* Copyright (C) 2009 emlix GmbH, Oskar Schirmer <oskar@scara.com>
*
* helper functions when coping with rational numbers,
* e.g. when calculating optimum numerator/denominator pairs for
* pll configuration taking into account restricted register size
*/
#ifndef _LINUX_RATIONAL_H
#define _LINUX_RATIONAL_H
void rational_best_approximation(
unsigned long given_numerator, unsigned long given_denominator,
unsigned long max_numerator, unsigned long max_denominator,
unsigned long *best_numerator, unsigned long *best_denominator);
#endif /* _LINUX_RATIONAL_H */