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2b778ceb | 1 | /* Copyright (C) 1991-2021 Free Software Foundation, Inc. |
6d52618b | 2 | This file is part of the GNU C Library. |
28f540f4 | 3 | |
6d52618b | 4 | The GNU C Library is free software; you can redistribute it and/or |
41bdb6e2 AJ |
5 | modify it under the terms of the GNU Lesser General Public |
6 | License as published by the Free Software Foundation; either | |
7 | version 2.1 of the License, or (at your option) any later version. | |
28f540f4 | 8 | |
6d52618b UD |
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 | |
41bdb6e2 | 12 | Lesser General Public License for more details. |
28f540f4 | 13 | |
41bdb6e2 | 14 | You should have received a copy of the GNU Lesser General Public |
59ba27a6 | 15 | License along with the GNU C Library; if not, see |
5a82c748 | 16 | <https://www.gnu.org/licenses/>. */ |
28f540f4 | 17 | |
28f540f4 RM |
18 | #include <string.h> |
19 | ||
9a0a462c UD |
20 | #undef strrchr |
21 | ||
c7debbdf RS |
22 | #ifndef STRRCHR |
23 | # define STRRCHR strrchr | |
24 | #endif | |
25 | ||
6d52618b | 26 | /* Find the last occurrence of C in S. */ |
28f540f4 | 27 | char * |
c7debbdf | 28 | STRRCHR (const char *s, int c) |
28f540f4 | 29 | { |
2e09a79a | 30 | const char *found, *p; |
28f540f4 RM |
31 | |
32 | c = (unsigned char) c; | |
33 | ||
34 | /* Since strchr is fast, we use it rather than the obvious loop. */ | |
f8adc70c | 35 | |
28f540f4 | 36 | if (c == '\0') |
f8adc70c | 37 | return strchr (s, '\0'); |
28f540f4 RM |
38 | |
39 | found = NULL; | |
f8adc70c | 40 | while ((p = strchr (s, c)) != NULL) |
28f540f4 RM |
41 | { |
42 | found = p; | |
43 | s = p + 1; | |
44 | } | |
45 | ||
46 | return (char *) found; | |
47 | } | |
48 | ||
49 | #ifdef weak_alias | |
50 | #undef rindex | |
51 | weak_alias (strrchr, rindex) | |
52 | #endif | |
85dd1003 | 53 | libc_hidden_builtin_def (strrchr) |