1 /* Copyright (C) 1991, 92, 93, 95, 96 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Library General Public License as
6 published by the Free Software Foundation; either version 2 of the
7 License, or (at your option) any later version.
9 The GNU C Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Library General Public License for more details.
14 You should have received a copy of the GNU Library General Public
15 License along with the GNU C Library; see the file COPYING.LIB. If
16 not, write to the, 1992 Free Software Foundation, Inc., 675 Mass Ave,
17 Cambridge, MA 02139, USA. */
20 * ANSI Standard: 4.11 STRING HANDLING <string.h>
30 /* Get size_t and NULL from <stddef.h>. */
36 /* Copy N bytes of SRC to DEST. */
37 extern __ptr_t memcpy
__P ((__ptr_t __dest
, __const __ptr_t __src
,
39 /* Copy N bytes of SRC to DEST, guaranteeing
40 correct behavior for overlapping strings. */
41 extern __ptr_t memmove
__P ((__ptr_t __dest
, __const __ptr_t __src
,
44 /* Copy no more than N bytes of SRC to DEST, stopping when C is found.
45 Return the position in DEST one byte past where C was copied,
46 or NULL if C was not found in the first N bytes of SRC. */
47 extern __ptr_t __memccpy
__P ((__ptr_t __dest
, __const __ptr_t __src
,
48 int __c
, size_t __n
));
49 #if defined (__USE_SVID) || defined (__USE_BSD)
50 extern __ptr_t memccpy
__P ((__ptr_t __dest
, __const __ptr_t __src
,
51 int __c
, size_t __n
));
53 #define memccpy(dest, src, c, n) __memccpy((dest), (src), (c), (n))
54 #endif /* Optimizing. */
58 /* Set N bytes of S to C. */
59 extern __ptr_t memset
__P ((__ptr_t __s
, int __c
, size_t __n
));
61 /* Compare N bytes of S1 and S2. */
62 extern int memcmp
__P ((__const __ptr_t __s1
, __const __ptr_t __s2
,
65 /* Search N bytes of S for C. */
66 extern __ptr_t memchr
__P ((__const __ptr_t __s
, int __c
, size_t __n
));
69 /* Copy SRC to DEST. */
70 extern char *strcpy
__P ((char *__dest
, __const
char *__src
));
71 /* Copy no more than N characters of SRC to DEST. */
72 extern char *strncpy
__P ((char *__dest
, __const
char *__src
, size_t __n
));
74 /* Append SRC onto DEST. */
75 extern char *strcat
__P ((char *__dest
, __const
char *__src
));
76 /* Append no more than N characters from SRC onto DEST. */
77 extern char *strncat
__P ((char *__dest
, __const
char *__src
, size_t __n
));
79 /* Compare S1 and S2. */
80 extern int strcmp
__P ((__const
char *__s1
, __const
char *__s2
));
81 /* Compare N characters of S1 and S2. */
82 extern int strncmp
__P ((__const
char *__s1
, __const
char *__s2
, size_t __n
));
84 /* Compare the collated forms of S1 and S2. */
85 extern int strcoll
__P ((__const
char *__s1
, __const
char *__s2
));
86 /* Put a transformation of SRC into no more than N bytes of DEST. */
87 extern size_t strxfrm
__P ((char *__dest
, __const
char *__src
, size_t __n
));
89 #if defined (__USE_SVID) || defined (__USE_BSD)
90 /* Duplicate S, returning an identical malloc'd string. */
91 extern char *strdup
__P ((__const
char *__s
));
94 #if defined (__USE_GNU) && defined (__GNUC__)
95 /* Duplicate S, returning an identical alloca'd string. */
98 const char *__old = (s); \
99 size_t __len = strlen (__old) + 1; \
100 memcpy (__builtin_alloca (__len), __old, __len); \
104 /* Find the first occurrence of C in S. */
105 extern char *strchr
__P ((__const
char *__s
, int __c
));
106 /* Find the last occurrence of C in S. */
107 extern char *strrchr
__P ((__const
char *__s
, int __c
));
109 /* Return the length of the initial segment of S which
110 consists entirely of characters not in REJECT. */
111 extern size_t strcspn
__P ((__const
char *__s
, __const
char *__reject
));
112 /* Return the length of the initial segment of S which
113 consists entirely of characters in ACCEPT. */
114 extern size_t strspn
__P ((__const
char *__s
, __const
char *__accept
));
115 /* Find the first occurence in S of any character in ACCEPT. */
116 extern char *strpbrk
__P ((__const
char *__s
, __const
char *__accept
));
117 /* Find the first occurence of NEEDLE in HAYSTACK. */
118 extern char *strstr
__P ((__const
char *__haystack
, __const
char *__needle
));
119 /* Divide S into tokens separated by characters in DELIM. */
120 extern char *strtok
__P ((char *__s
, __const
char *__delim
));
123 /* Find the first occurence of NEEDLE in HAYSTACK.
124 NEEDLE is NEEDLELEN bytes long;
125 HAYSTACK is HAYSTACKLEN bytes long. */
126 extern __ptr_t memmem
__P ((__const __ptr_t __haystack
, size_t __haystacklen
,
127 __const __ptr_t __needle
, size_t __needlelen
));
130 /* Return the length of S. */
131 extern size_t strlen
__P ((__const
char *__s
));
133 /* Return a string describing the meaning of the `errno' code in ERRNUM. */
134 extern char *strerror
__P ((int __errnum
));
135 #ifdef __USE_REENTRANT
136 /* Reentrant version of `strerror'. If a temporary buffer is required, at
137 most BUFLEN bytes of BUF will be used. */
138 extern char *strerror_r
__P ((int __errnum
, char *__buf
, int __buflen
));
142 /* Find the first occurrence of C in S (same as strchr). */
143 extern char *index
__P ((__const
char *__s
, int __c
));
145 /* Find the last occurrence of C in S (same as strrchr). */
146 extern char *rindex
__P ((__const
char *__s
, int __c
));
148 /* Copy N bytes of SRC to DEST (like memmove, but args reversed). */
149 extern void bcopy
__P ((__const __ptr_t __src
, __ptr_t __dest
, size_t __n
));
151 /* Set N bytes of S to 0. */
152 extern void bzero
__P ((__ptr_t __s
, size_t __n
));
154 /* Compare N bytes of S1 and S2 (same as memcmp). */
155 extern int bcmp
__P ((__const __ptr_t __s1
, __const __ptr_t __s2
, size_t __n
));
157 /* Return the position of the first bit set in I, or 0 if none are set.
158 The least-significant bit is position 1, the most-significant 32. */
159 extern int ffs
__P ((int __i
));
161 /* Compare S1 and S2, ignoring case. */
162 extern int __strcasecmp
__P ((__const
char *__s1
, __const
char *__s2
));
163 extern int strcasecmp
__P ((__const
char *__s1
, __const
char *__s2
));
165 /* Return the next DELIM-delimited token from *STRINGP,
166 terminating it with a '\0', and update *STRINGP to point past it. */
167 extern char *strsep
__P ((char **__stringp
, __const
char *__delim
));
171 /* Compare no more than N chars of S1 and S2, ignoring case. */
172 extern int strncasecmp
__P ((__const
char *__s1
, __const
char *__s2
,
175 /* Return a string describing the meaning of the signal number in SIG. */
176 extern char *strsignal
__P ((int __sig
));
178 /* Copy SRC to DEST, returning the address of the terminating '\0' in DEST. */
179 extern char *__stpcpy
__P ((char *__dest
, __const
char *__src
));
180 extern char *stpcpy
__P ((char *__dest
, __const
char *__src
));
182 /* Copy no more than N characters of SRC to DEST, returning the address of
183 the last character written into DEST. */
184 extern char *__stpncpy
__P ((char *__dest
, __const
char *__src
, size_t __n
));
185 extern char *stpncpy
__P ((char *__dest
, __const
char *__src
, size_t __n
));
187 /* Sautee STRING briskly. */
188 extern char *strfry
__P ((char *__string
));
190 /* Frobnicate N bytes of S. */
191 extern __ptr_t memfrob
__P ((__ptr_t __s
, size_t __n
));
196 #endif /* string.h */