[mirror_ubuntu-bionic-kernel.git] / include / linux / rational.h

/* SPDX-License-Identifier: GPL-2.0 */
/*
 * 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 */
Commit	Line	Data
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 */