2 * Copyright (c) 1992, 1993
3 * The Regents of the University of California. All rights reserved.
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6 * modification, are permitted provided that the following conditions
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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 LIBKERN_LEN_BCD2BIN 154
53 #define LIBKERN_LEN_BIN2BCD 100
54 #define LIBKERN_LEN_HEX2ASCII 36
60 KASSERT(bcd >= 0 && bcd < LIBKERN_LEN_BCD2BIN,
61 ("invalid bcd %d", bcd));
62 return (bcd2bin_data[bcd]);
69 KASSERT(bin >= 0 && bin < LIBKERN_LEN_BIN2BCD,
70 ("invalid bin %d", bin));
71 return (bin2bcd_data[bin]);
78 KASSERT(hex >= 0 && hex < LIBKERN_LEN_HEX2ASCII,
79 ("invalid hex %d", hex));
80 return (hex2ascii_data[hex]);
83 static __inline int imax(int a, int b) { return (a > b ? a : b); }
84 static __inline int imin(int a, int b) { return (a < b ? a : b); }
85 static __inline long lmax(long a, long b) { return (a > b ? a : b); }
86 static __inline long lmin(long a, long b) { return (a < b ? a : b); }
87 static __inline u_int max(u_int a, u_int b) { return (a > b ? a : b); }
88 static __inline u_int min(u_int a, u_int b) { return (a < b ? a : b); }
89 static __inline quad_t qmax(quad_t a, quad_t b) { return (a > b ? a : b); }
90 static __inline quad_t qmin(quad_t a, quad_t b) { return (a < b ? a : b); }
91 static __inline u_quad_t uqmax(u_quad_t a, u_quad_t b) { return (a > b ? a : b); }
92 static __inline u_quad_t uqmin(u_quad_t a, u_quad_t b) { return (a < b ? a : b); }
93 static __inline u_long ulmax(u_long a, u_long b) { return (a > b ? a : b); }
94 static __inline u_long ulmin(u_long a, u_long b) { return (a < b ? a : b); }
95 static __inline __uintmax_t ummax(__uintmax_t a, __uintmax_t b)
98 return (a > b ? a : b);
100 static __inline __uintmax_t ummin(__uintmax_t a, __uintmax_t b)
103 return (a < b ? a : b);
105 static __inline off_t omax(off_t a, off_t b) { return (a > b ? a : b); }
106 static __inline off_t omin(off_t a, off_t b) { return (a < b ? a : b); }
108 static __inline int abs(int a) { return (a < 0 ? -a : a); }
109 static __inline long labs(long a) { return (a < 0 ? -a : a); }
110 static __inline quad_t qabs(quad_t a) { return (a < 0 ? -a : a); }
112 #define ARC4_ENTR_NONE 0 /* Don't have entropy yet. */
113 #define ARC4_ENTR_HAVE 1 /* Have entropy. */
114 #define ARC4_ENTR_SEED 2 /* Reseeding. */
115 extern int arc4rand_iniseed_state;
117 /* Prototypes for non-quad routines. */
119 uint32_t arc4random(void);
120 void arc4random_buf(void *, size_t);
121 void arc4rand(void *, u_int, int);
122 int bcmp(const void *, const void *, size_t);
123 int timingsafe_bcmp(const void *, const void *, size_t);
124 void *bsearch(const void *, const void *, size_t,
125 size_t, int (*)(const void *, const void *));
126 #ifndef HAVE_INLINE_FFS
129 #ifndef HAVE_INLINE_FFSL
132 #ifndef HAVE_INLINE_FFSLL
133 int ffsll(long long);
135 #ifndef HAVE_INLINE_FLS
138 #ifndef HAVE_INLINE_FLSL
141 #ifndef HAVE_INLINE_FLSLL
142 int flsll(long long);
144 #define bitcount64(x) __bitcount64((uint64_t)(x))
145 #define bitcount32(x) __bitcount32((uint32_t)(x))
146 #define bitcount16(x) __bitcount16((uint16_t)(x))
147 #define bitcountl(x) __bitcountl((u_long)(x))
148 #define bitcount(x) __bitcount((u_int)(x))
150 int fnmatch(const char *, const char *, int);
151 int locc(int, char *, u_int);
152 void *memchr(const void *s, int c, size_t n);
153 void *memcchr(const void *s, int c, size_t n);
154 int memcmp(const void *b1, const void *b2, size_t len);
155 void *memmem(const void *l, size_t l_len, const void *s, size_t s_len);
156 void qsort(void *base, size_t nmemb, size_t size,
157 int (*compar)(const void *, const void *));
158 void qsort_r(void *base, size_t nmemb, size_t size, void *thunk,
159 int (*compar)(void *, const void *, const void *));
161 int scanc(u_int, const u_char *, const u_char *, int);
162 void srandom(u_long);
163 int strcasecmp(const char *, const char *);
164 char *strcat(char * __restrict, const char * __restrict);
165 char *strchr(const char *, int);
166 int strcmp(const char *, const char *);
167 char *strcpy(char * __restrict, const char * __restrict);
168 size_t strcspn(const char * __restrict, const char * __restrict) __pure;
169 char *strdup(const char *__restrict, struct malloc_type *);
170 char *strncat(char *, const char *, size_t);
171 char *strndup(const char *__restrict, size_t, struct malloc_type *);
172 size_t strlcat(char *, const char *, size_t);
173 size_t strlcpy(char *, const char *, size_t);
174 size_t strlen(const char *);
175 int strncasecmp(const char *, const char *, size_t);
176 int strncmp(const char *, const char *, size_t);
177 char *strncpy(char * __restrict, const char * __restrict, size_t);
178 size_t strnlen(const char *, size_t);
179 char *strrchr(const char *, int);
180 char *strsep(char **, const char *delim);
181 size_t strspn(const char *, const char *);
182 char *strstr(const char *, const char *);
183 int strvalid(const char *, size_t);
185 extern const uint32_t crc32_tab[];
187 static __inline uint32_t
188 crc32_raw(const void *buf, size_t size, uint32_t crc)
190 const uint8_t *p = (const uint8_t *)buf;
193 crc = crc32_tab[(crc ^ *p++) & 0xFF] ^ (crc >> 8);
197 static __inline uint32_t
198 crc32(const void *buf, size_t size)
202 crc = crc32_raw(buf, size, ~0U);
207 calculate_crc32c(uint32_t crc32c, const unsigned char *buffer,
208 unsigned int length);
210 #if defined(__amd64__) || defined(__i386__)
211 uint32_t sse42_crc32c(uint32_t, const unsigned char *, unsigned);
213 #if defined(__aarch64__)
214 uint32_t armv8_crc32c(uint32_t, const unsigned char *, unsigned int);
219 LIBKERN_INLINE void *memset(void *, int, size_t);
221 LIBKERN_INLINE void *
222 memset(void *b, int c, size_t len)
229 for (bb = (char *)b; len--; )
235 static __inline char *
236 index(const char *p, int ch)
239 return (strchr(p, ch));
242 static __inline char *
243 rindex(const char *p, int ch)
246 return (strrchr(p, ch));
249 /* fnmatch() return values. */
250 #define FNM_NOMATCH 1 /* Match failed. */
252 /* fnmatch() flags. */
253 #define FNM_NOESCAPE 0x01 /* Disable backslash escaping. */
254 #define FNM_PATHNAME 0x02 /* Slash must be matched by slash. */
255 #define FNM_PERIOD 0x04 /* Period must be matched by period. */
256 #define FNM_LEADING_DIR 0x08 /* Ignore /<tail> after Imatch. */
257 #define FNM_CASEFOLD 0x10 /* Case insensitive search. */
258 #define FNM_IGNORECASE FNM_CASEFOLD
259 #define FNM_FILE_NAME FNM_PATHNAME
261 #endif /* !_SYS_LIBKERN_H_ */