1 /* $OpenBSD: libkern.h,v 1.37 2023/12/21 02:57:14 jsg Exp $ */
2 /* $NetBSD: libkern.h,v 1.7 1996/03/14 18:52:08 christos Exp $ */
3
4 /*-
5 * Copyright (c) 1992, 1993
6 * The Regents of the University of California. All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. Neither the name of the University nor the names of its contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 *
32 * @(#)libkern.h 8.1 (Berkeley) 6/10/93
33 */
34
35 #ifndef __LIBKERN_H__
36 #define __LIBKERN_H__
37
38 #include <sys/types.h>
39
40 #ifndef LIBKERN_INLINE
41 #define LIBKERN_INLINE static __inline
42 #define LIBKERN_BODY
43 #endif
44
45
46 LIBKERN_INLINE int imax(int, int);
47 LIBKERN_INLINE int imin(int, int);
48 LIBKERN_INLINE u_int max(u_int, u_int);
49 LIBKERN_INLINE u_int min(u_int, u_int);
50 LIBKERN_INLINE long lmax(long, long);
51 LIBKERN_INLINE long lmin(long, long);
52 LIBKERN_INLINE u_long ulmax(u_long, u_long);
53 LIBKERN_INLINE u_long ulmin(u_long, u_long);
54 LIBKERN_INLINE int abs(int);
55
56 #ifdef LIBKERN_BODY
57 LIBKERN_INLINE int
imax(int a,int b)58 imax(int a, int b)
59 {
60 return (a > b ? a : b);
61 }
62 LIBKERN_INLINE int
imin(int a,int b)63 imin(int a, int b)
64 {
65 return (a < b ? a : b);
66 }
67 LIBKERN_INLINE long
lmax(long a,long b)68 lmax(long a, long b)
69 {
70 return (a > b ? a : b);
71 }
72 LIBKERN_INLINE long
lmin(long a,long b)73 lmin(long a, long b)
74 {
75 return (a < b ? a : b);
76 }
77 LIBKERN_INLINE u_int
max(u_int a,u_int b)78 max(u_int a, u_int b)
79 {
80 return (a > b ? a : b);
81 }
82 LIBKERN_INLINE u_int
min(u_int a,u_int b)83 min(u_int a, u_int b)
84 {
85 return (a < b ? a : b);
86 }
87 LIBKERN_INLINE u_long
ulmax(u_long a,u_long b)88 ulmax(u_long a, u_long b)
89 {
90 return (a > b ? a : b);
91 }
92 LIBKERN_INLINE u_long
ulmin(u_long a,u_long b)93 ulmin(u_long a, u_long b)
94 {
95 return (a < b ? a : b);
96 }
97
98 LIBKERN_INLINE int
abs(int j)99 abs(int j)
100 {
101 return(j < 0 ? -j : j);
102 }
103 #endif
104
105 #ifdef NDEBUG /* tradition! */
106 #define assert(e) ((void)0)
107 #else
108 #define assert(e) ((e) ? (void)0 : \
109 __assert("", __FILE__, __LINE__, #e))
110 #endif
111
112 #define __KASSERTSTR "kernel %sassertion \"%s\" failed: file \"%s\", line %d"
113
114 #ifndef DIAGNOSTIC
115 #define KASSERTMSG(e, msg, ...) ((void)0)
116 #define KASSERT(e) ((void)0)
117 #else
118 #define KASSERTMSG(e, msg, ...) ((e) ? (void)0 : \
119 panic(__KASSERTSTR " " msg, "diagnostic ", #e, \
120 __FILE__, __LINE__, ## __VA_ARGS__))
121 #define KASSERT(e) ((e) ? (void)0 : \
122 __assert("diagnostic ", __FILE__, __LINE__, #e))
123 #endif
124
125 #ifndef DEBUG
126 #define KDASSERTMSG(e, msg, ...) ((void)0)
127 #define KDASSERT(e) ((void)0)
128 #else
129 #define KDASSERTMSG(e, msg, ...) ((e) ? (void)0 : \
130 panic(__KASSERTSTR " " msg, "debugging ", #e, \
131 __FILE__, __LINE__, ## __VA_ARGS__))
132 #define KDASSERT(e) ((e) ? (void)0 : \
133 __assert("debugging ", __FILE__, __LINE__, #e))
134 #endif
135
136 #define CTASSERT(x) extern char _ctassert[(x) ? 1 : -1 ] \
137 __attribute__((__unused__))
138
139 /* Prototypes for non-quad routines. */
140 void __assert(const char *, const char *, int, const char *)
141 __attribute__ ((__noreturn__));
142 int bcmp(const void *, const void *, size_t);
143 void bzero(void *, size_t);
144 void explicit_bzero(void *, size_t);
145 int ffs(int);
146 int fls(int);
147 int flsl(long);
148 void *memchr(const void *, int, size_t);
149 int memcmp(const void *, const void *, size_t);
150 void *memset(void *, int c, size_t len);
151 u_int32_t random(void);
152 int scanc(u_int, const u_char *, const u_char [], int);
153 int skpc(int, size_t, u_char *);
154 size_t strlen(const char *);
155 char *strncpy(char *, const char *, size_t)
156 __attribute__ ((__bounded__(__string__,1,3)));
157 size_t strnlen(const char *, size_t);
158 size_t strlcpy(char *, const char *, size_t)
159 __attribute__ ((__bounded__(__string__,1,3)));
160 size_t strlcat(char *, const char *, size_t)
161 __attribute__ ((__bounded__(__string__,1,3)));
162 int strcmp(const char *, const char *);
163 int strncmp(const char *, const char *, size_t);
164 int strncasecmp(const char *, const char *, size_t);
165 size_t getsn(char *, size_t)
166 __attribute__ ((__bounded__(__string__,1,2)));
167 char *strchr(const char *, int);
168 char *strrchr(const char *, int);
169 int timingsafe_bcmp(const void *, const void *, size_t);
170 char *strnstr(const char *, const char *, size_t);
171
172 #endif /* __LIBKERN_H__ */
173