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506f7dbbab
New algorithm now calls strchrnul. Checked on x86_64-linux-gnu, i686-linux-gnu, powerpc-linux-gnu, and powerpc64-linux-gnu by removing the arch-specific assembly implementation and disabling multi-arch (it covers both LE and BE for 64 and 32 bits). Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Noah Goldstein <goldstein.w.n@gmail.com>
38 lines
1.1 KiB
C
38 lines
1.1 KiB
C
/* Copyright (C) 1991-2023 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 strchr
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#undef index
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#ifdef STRCHR
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# define strchr STRCHR
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#endif
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/* Find the first occurrence of C in S. */
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char *
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strchr (const char *s, int c_in)
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{
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char *r = __strchrnul (s, c_in);
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return (*(unsigned char *)r == (unsigned char)c_in) ? r : NULL;
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}
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#ifndef STRCHR
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weak_alias (strchr, index)
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libc_hidden_builtin_def (strchr)
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#endif
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