2 * Copyright (c) 1992, 1993
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29 * @(#)libkern.h 8.1 (Berkeley) 6/10/93
33 #ifndef _SYS_LIBKERN_H_
34 #define _SYS_LIBKERN_H_
36 #include <sys/cdefs.h>
37 #include <sys/types.h>
39 #include <sys/systm.h>
42 #ifndef LIBKERN_INLINE
43 #define LIBKERN_INLINE static __inline
47 /* BCD conversions. */
48 extern u_char const bcd2bin_data[];
49 extern u_char const bin2bcd_data[];
50 extern char const hex2ascii_data[];
52 #define bcd2bin(bcd) (bcd2bin_data[bcd])
53 #define bin2bcd(bin) (bin2bcd_data[bin])
54 #define hex2ascii(hex) (hex2ascii_data[hex])
56 static __inline int imax(int a, int b) { return (a > b ? a : b); }
57 static __inline int imin(int a, int b) { return (a < b ? a : b); }
58 static __inline long lmax(long a, long b) { return (a > b ? a : b); }
59 static __inline long lmin(long a, long b) { return (a < b ? a : b); }
60 static __inline u_int max(u_int a, u_int b) { return (a > b ? a : b); }
61 static __inline u_int min(u_int a, u_int b) { return (a < b ? a : b); }
62 static __inline quad_t qmax(quad_t a, quad_t b) { return (a > b ? a : b); }
63 static __inline quad_t qmin(quad_t a, quad_t b) { return (a < b ? a : b); }
64 static __inline u_quad_t uqmax(u_quad_t a, u_quad_t b) { return (a > b ? a : b); }
65 static __inline u_quad_t uqmin(u_quad_t a, u_quad_t b) { return (a < b ? a : b); }
66 static __inline u_long ulmax(u_long a, u_long b) { return (a > b ? a : b); }
67 static __inline u_long ulmin(u_long a, u_long b) { return (a < b ? a : b); }
68 static __inline __uintmax_t ummax(__uintmax_t a, __uintmax_t b)
71 return (a > b ? a : b);
73 static __inline __uintmax_t ummin(__uintmax_t a, __uintmax_t b)
76 return (a < b ? a : b);
78 static __inline off_t omax(off_t a, off_t b) { return (a > b ? a : b); }
79 static __inline off_t omin(off_t a, off_t b) { return (a < b ? a : b); }
81 static __inline int abs(int a) { return (a < 0 ? -a : a); }
82 static __inline long labs(long a) { return (a < 0 ? -a : a); }
83 static __inline quad_t qabs(quad_t a) { return (a < 0 ? -a : a); }
85 #define ARC4_ENTR_NONE 0 /* Don't have entropy yet. */
86 #define ARC4_ENTR_HAVE 1 /* Have entropy. */
87 #define ARC4_ENTR_SEED 2 /* Reseeding. */
88 extern int arc4rand_iniseed_state;
90 /* Prototypes for non-quad routines. */
92 uint32_t arc4random(void);
93 void arc4rand(void *ptr, u_int len, int reseed);
94 int bcmp(const void *, const void *, size_t);
95 int timingsafe_bcmp(const void *, const void *, size_t);
96 void *bsearch(const void *, const void *, size_t,
97 size_t, int (*)(const void *, const void *));
98 #ifndef HAVE_INLINE_FFS
101 #ifndef HAVE_INLINE_FFSL
104 #ifndef HAVE_INLINE_FFSLL
105 int ffsll(long long);
107 #ifndef HAVE_INLINE_FLS
110 #ifndef HAVE_INLINE_FLSL
113 #ifndef HAVE_INLINE_FLSLL
114 int flsll(long long);
116 #define bitcount64(x) __bitcount64((uint64_t)(x))
117 #define bitcount32(x) __bitcount32((uint32_t)(x))
118 #define bitcount16(x) __bitcount16((uint16_t)(x))
119 #define bitcountl(x) __bitcountl((u_long)(x))
120 #define bitcount(x) __bitcount((u_int)(x))
122 int fnmatch(const char *, const char *, int);
123 int locc(int, char *, u_int);
124 void *memchr(const void *s, int c, size_t n);
125 void *memcchr(const void *s, int c, size_t n);
126 int memcmp(const void *b1, const void *b2, size_t len);
127 void *memmem(const void *l, size_t l_len, const void *s, size_t s_len);
128 void qsort(void *base, size_t nmemb, size_t size,
129 int (*compar)(const void *, const void *));
130 void qsort_r(void *base, size_t nmemb, size_t size, void *thunk,
131 int (*compar)(void *, const void *, const void *));
133 int scanc(u_int, const u_char *, const u_char *, int);
134 void srandom(u_long);
135 int strcasecmp(const char *, const char *);
136 char *strcat(char * __restrict, const char * __restrict);
137 char *strchr(const char *, int);
138 int strcmp(const char *, const char *);
139 char *strcpy(char * __restrict, const char * __restrict);
140 size_t strcspn(const char * __restrict, const char * __restrict) __pure;
141 char *strdup(const char *__restrict, struct malloc_type *);
142 char *strncat(char *, const char *, size_t);
143 char *strndup(const char *__restrict, size_t, struct malloc_type *);
144 size_t strlcat(char *, const char *, size_t);
145 size_t strlcpy(char *, const char *, size_t);
146 size_t strlen(const char *);
147 int strncasecmp(const char *, const char *, size_t);
148 int strncmp(const char *, const char *, size_t);
149 char *strncpy(char * __restrict, const char * __restrict, size_t);
150 size_t strnlen(const char *, size_t);
151 char *strrchr(const char *, int);
152 char *strsep(char **, const char *delim);
153 size_t strspn(const char *, const char *);
154 char *strstr(const char *, const char *);
155 int strvalid(const char *, size_t);
157 extern const uint32_t crc32_tab[];
159 static __inline uint32_t
160 crc32_raw(const void *buf, size_t size, uint32_t crc)
162 const uint8_t *p = (const uint8_t *)buf;
165 crc = crc32_tab[(crc ^ *p++) & 0xFF] ^ (crc >> 8);
169 static __inline uint32_t
170 crc32(const void *buf, size_t size)
174 crc = crc32_raw(buf, size, ~0U);
179 calculate_crc32c(uint32_t crc32c, const unsigned char *buffer,
180 unsigned int length);
183 LIBKERN_INLINE void *memset(void *, int, size_t);
185 LIBKERN_INLINE void *
186 memset(void *b, int c, size_t len)
193 for (bb = (char *)b; len--; )
199 static __inline char *
200 index(const char *p, int ch)
203 return (strchr(p, ch));
206 static __inline char *
207 rindex(const char *p, int ch)
210 return (strrchr(p, ch));
213 /* fnmatch() return values. */
214 #define FNM_NOMATCH 1 /* Match failed. */
216 /* fnmatch() flags. */
217 #define FNM_NOESCAPE 0x01 /* Disable backslash escaping. */
218 #define FNM_PATHNAME 0x02 /* Slash must be matched by slash. */
219 #define FNM_PERIOD 0x04 /* Period must be matched by period. */
220 #define FNM_LEADING_DIR 0x08 /* Ignore /<tail> after Imatch. */
221 #define FNM_CASEFOLD 0x10 /* Case insensitive search. */
222 #define FNM_IGNORECASE FNM_CASEFOLD
223 #define FNM_FILE_NAME FNM_PATHNAME
225 #endif /* !_SYS_LIBKERN_H_ */