59 lines
1.7 KiB
C
59 lines
1.7 KiB
C
/* Linear search functions.
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Copyright (C) 1996, 1997, 1998 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996.
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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 Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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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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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If not,
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write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#include <search.h>
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#include <string.h>
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void *
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lsearch (const void *key, void *base, size_t *nmemb, size_t size,
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__compar_fn_t compar)
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{
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void *result;
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/* Try to find it. */
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result = lfind (key, base, nmemb, size, compar);
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if (result == NULL)
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{
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/* Not available. Insert at the end. */
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result = memcpy (base + (*nmemb) * size, key, size);
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++(*nmemb);
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}
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return result;
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}
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void *
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lfind (const void *key, const void *base, size_t *nmemb, size_t size,
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__compar_fn_t compar)
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{
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const void *result = base;
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size_t cnt = 0;
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while (cnt < *nmemb && (*compar) (key, result) != 0)
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{
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result += size;
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++cnt;
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}
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return cnt < *nmemb ? (void *) result : NULL;
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}
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