1 /* $NetBSD: math64.h,v 1.6 2018/08/27 07:02:51 riastradh Exp $ */ 2 3 /*- 4 * Copyright (c) 2013 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Taylor R. Campbell. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #ifndef _LINUX_MATH64_H_ 33 #define _LINUX_MATH64_H_ 34 35 #include <sys/types.h> 36 37 #include <asm/div64.h> 38 39 static inline int64_t 40 div64_u64(int64_t dividend, uint64_t divisor) 41 { 42 return dividend / divisor; 43 } 44 45 static inline int64_t 46 div_u64(int64_t dividend, uint32_t divisor) 47 { 48 return dividend / divisor; 49 } 50 51 static inline int64_t 52 div64_s64(int64_t dividend, int64_t divisor) 53 { 54 return dividend / divisor; 55 } 56 57 static inline int64_t 58 div_s64(int64_t dividend, int32_t divisor) 59 { 60 return dividend / divisor; 61 } 62 63 static inline uint64_t 64 div64_u64_rem(uint64_t dividend, uint64_t divisor, uint64_t *rem) 65 { 66 *rem = dividend % divisor; 67 return dividend / divisor; 68 } 69 70 #endif /* _LINUX_MATH64_H_ */ 71