xref: /src/sys/external/bsd/drm2/include/linux/math64.h

/*	$NetBSD: math64.h,v 1.3.30.1 2019/06/10 22:08:31 christos Exp $	*/

/*-
 * Copyright (c) 2013 The NetBSD Foundation, Inc.
 * All rights reserved.
 *
 * This code is derived from software contributed to The NetBSD Foundation
 * by Taylor R. Campbell.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

#ifndef _LINUX_MATH64_H_
#define _LINUX_MATH64_H_

#include <sys/types.h>

#include <asm/div64.h>

static inline int64_t
div64_u64(int64_t dividend, uint64_t divisor)
{
	return dividend / divisor;
}

static inline int64_t
div_u64(int64_t dividend, uint32_t divisor)
{
	return dividend / divisor;
}

static inline int64_t
div64_s64(int64_t dividend, int64_t divisor)
{
	return dividend / divisor;
}

static inline int64_t
div_s64(int64_t dividend, int32_t divisor)
{
	return dividend / divisor;
}

static inline uint64_t
div64_u64_rem(uint64_t dividend, uint64_t divisor, uint64_t *rem)
{
	*rem = dividend % divisor;
	return dividend / divisor;
}

#endif  /* _LINUX_MATH64_H_ */