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54 lines
1.3 KiB
C
54 lines
1.3 KiB
C
/* Copyright (C) 1991-2020 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#include <string.h>
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#undef strrchr
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#ifndef STRRCHR
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# define STRRCHR strrchr
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#endif
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/* Find the last occurrence of C in S. */
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char *
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STRRCHR (const char *s, int c)
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{
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const char *found, *p;
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c = (unsigned char) c;
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/* Since strchr is fast, we use it rather than the obvious loop. */
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if (c == '\0')
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return strchr (s, '\0');
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found = NULL;
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while ((p = strchr (s, c)) != NULL)
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{
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found = p;
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s = p + 1;
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}
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return (char *) found;
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}
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#ifdef weak_alias
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#undef rindex
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weak_alias (strrchr, rindex)
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#endif
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libc_hidden_builtin_def (strrchr)
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