1270710Shselasky/*- 2270710Shselasky * Copyright (c) 2007 Cisco Systems, Inc. All rights reserved. 3289569Shselasky * Copyright (c) 2014-2015 Mellanox Technologies, Ltd. All rights reserved. 4270710Shselasky * All rights reserved. 5270710Shselasky * 6270710Shselasky * Redistribution and use in source and binary forms, with or without 7270710Shselasky * modification, are permitted provided that the following conditions 8270710Shselasky * are met: 9270710Shselasky * 1. Redistributions of source code must retain the above copyright 10270710Shselasky * notice unmodified, this list of conditions, and the following 11270710Shselasky * disclaimer. 12270710Shselasky * 2. Redistributions in binary form must reproduce the above copyright 13270710Shselasky * notice, this list of conditions and the following disclaimer in the 14270710Shselasky * documentation and/or other materials provided with the distribution. 15270710Shselasky * 16270710Shselasky * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17270710Shselasky * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18270710Shselasky * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19270710Shselasky * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 20270710Shselasky * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 21270710Shselasky * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 22270710Shselasky * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 23270710Shselasky * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24270710Shselasky * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 25270710Shselasky * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26289644Shselasky * 27289644Shselasky * $FreeBSD: stable/11/sys/compat/linuxkpi/common/include/linux/math64.h 361195 2020-05-18 09:24:36Z hselasky $ 28270710Shselasky */ 29328653Shselasky 30270710Shselasky#ifndef _LINUX_MATH64_H 31289569Shselasky#define _LINUX_MATH64_H 32270710Shselasky 33289569Shselasky#include <sys/stdint.h> 34270710Shselasky 35289569Shselasky#define do_div(n, base) ({ \ 36289569Shselasky uint32_t __base = (base); \ 37289569Shselasky uint32_t __rem; \ 38289569Shselasky __rem = ((uint64_t)(n)) % __base; \ 39289569Shselasky (n) = ((uint64_t)(n)) / __base; \ 40289569Shselasky __rem; \ 41270710Shselasky}) 42270710Shselasky 43289569Shselaskystatic inline uint64_t 44328653Shselaskydiv64_u64_rem(uint64_t dividend, uint64_t divisor, uint64_t *remainder) 45328653Shselasky{ 46328653Shselasky 47328653Shselasky *remainder = dividend % divisor; 48328653Shselasky return (dividend / divisor); 49328653Shselasky} 50328653Shselasky 51328653Shselaskystatic inline int64_t 52328653Shselaskydiv64_s64(int64_t dividend, int64_t divisor) 53328653Shselasky{ 54328653Shselasky 55328653Shselasky return (dividend / divisor); 56328653Shselasky} 57328653Shselasky 58328653Shselaskystatic inline uint64_t 59328653Shselaskydiv64_u64(uint64_t dividend, uint64_t divisor) 60328653Shselasky{ 61328653Shselasky 62328653Shselasky return (dividend / divisor); 63328653Shselasky} 64328653Shselasky 65328653Shselaskystatic inline uint64_t 66289569Shselaskydiv_u64_rem(uint64_t dividend, uint32_t divisor, uint32_t *remainder) 67270710Shselasky{ 68328653Shselasky 69289569Shselasky *remainder = dividend % divisor; 70289569Shselasky return (dividend / divisor); 71270710Shselasky} 72270710Shselasky 73328653Shselaskystatic inline int64_t 74328653Shselaskydiv_s64(int64_t dividend, int32_t divisor) 75328653Shselasky{ 76328653Shselasky 77328653Shselasky return (dividend / divisor); 78328653Shselasky} 79328653Shselasky 80289569Shselaskystatic inline uint64_t 81289569Shselaskydiv_u64(uint64_t dividend, uint32_t divisor) 82270710Shselasky{ 83328653Shselasky 84289569Shselasky return (dividend / divisor); 85270710Shselasky} 86270710Shselasky 87335415Shselaskystatic inline uint64_t 88335415Shselaskymul_u32_u32(uint32_t a, uint32_t b) 89335415Shselasky{ 90335415Shselasky 91335415Shselasky return ((uint64_t)a * b); 92335415Shselasky} 93335415Shselasky 94361195Shselaskystatic inline uint64_t 95361195Shselaskydiv64_u64_round_up(uint64_t dividend, uint64_t divisor) 96361195Shselasky{ 97361195Shselasky return ((dividend + divisor - 1) / divisor); 98361195Shselasky} 99361195Shselasky 100361195Shselasky#define DIV64_U64_ROUND_UP(...) \ 101361195Shselasky div64_u64_round_up(__VA_ARGS__) 102361195Shselasky 103328653Shselasky#endif /* _LINUX_MATH64_H */ 104