mirror of
https://github.com/opnsense/src.git
synced 2026-02-18 01:59:01 -05:00
885ab0dba2
Needed by drm-kmod. Reviewed by: hselasky Obtained from: OpenBSD Sponsored by: Beckhoff Automation GmbH & Co. KG Differential Revision: https://reviews.freebsd.org/D35937
122 lines
3.1 KiB
C
122 lines
3.1 KiB
C
/*-
|
|
* Copyright (c) 2007 Cisco Systems, Inc. All rights reserved.
|
|
* Copyright (c) 2014-2015 Mellanox Technologies, Ltd. All rights reserved.
|
|
* All rights reserved.
|
|
*
|
|
* 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 unmodified, 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 AUTHOR ``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 AUTHOR 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.
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
#ifndef _LINUXKPI_LINUX_MATH64_H
|
|
#define _LINUXKPI_LINUX_MATH64_H
|
|
|
|
#include <sys/stdint.h>
|
|
|
|
#define do_div(n, base) ({ \
|
|
uint32_t __base = (base); \
|
|
uint32_t __rem; \
|
|
__rem = ((uint64_t)(n)) % __base; \
|
|
(n) = ((uint64_t)(n)) / __base; \
|
|
__rem; \
|
|
})
|
|
|
|
static inline uint64_t
|
|
div64_u64_rem(uint64_t dividend, uint64_t divisor, uint64_t *remainder)
|
|
{
|
|
|
|
*remainder = dividend % divisor;
|
|
return (dividend / divisor);
|
|
}
|
|
|
|
static inline int64_t
|
|
div64_s64(int64_t dividend, int64_t divisor)
|
|
{
|
|
|
|
return (dividend / divisor);
|
|
}
|
|
|
|
static inline uint64_t
|
|
div64_u64(uint64_t dividend, uint64_t divisor)
|
|
{
|
|
|
|
return (dividend / divisor);
|
|
}
|
|
|
|
static inline uint64_t
|
|
div_u64_rem(uint64_t dividend, uint32_t divisor, uint32_t *remainder)
|
|
{
|
|
|
|
*remainder = dividend % divisor;
|
|
return (dividend / divisor);
|
|
}
|
|
|
|
static inline int64_t
|
|
div_s64(int64_t dividend, int32_t divisor)
|
|
{
|
|
|
|
return (dividend / divisor);
|
|
}
|
|
|
|
static inline uint64_t
|
|
div_u64(uint64_t dividend, uint32_t divisor)
|
|
{
|
|
|
|
return (dividend / divisor);
|
|
}
|
|
|
|
static inline uint64_t
|
|
mul_u32_u32(uint32_t a, uint32_t b)
|
|
{
|
|
|
|
return ((uint64_t)a * b);
|
|
}
|
|
|
|
static inline uint64_t
|
|
div64_u64_round_up(uint64_t dividend, uint64_t divisor)
|
|
{
|
|
return ((dividend + divisor - 1) / divisor);
|
|
}
|
|
|
|
#define DIV64_U64_ROUND_UP(...) \
|
|
div64_u64_round_up(__VA_ARGS__)
|
|
|
|
static inline uint64_t
|
|
mul_u64_u32_div(uint64_t x, uint32_t y, uint32_t div)
|
|
{
|
|
const uint64_t rem = x % div;
|
|
|
|
return ((x / div) * y + (rem * y) / div);
|
|
}
|
|
|
|
static inline uint64_t
|
|
mul_u64_u32_shr(uint64_t x, uint32_t y, unsigned int shift)
|
|
{
|
|
uint32_t hi, lo;
|
|
hi = x >> 32;
|
|
lo = x & 0xffffffff;
|
|
|
|
return (mul_u32_u32(lo, y) >> shift) +
|
|
(mul_u32_u32(hi, y) << (32 - shift));
|
|
}
|
|
|
|
#endif /* _LINUXKPI_LINUX_MATH64_H */
|