kolibrios/programs/develop/open watcom/trunk/clib/search/lsearch.c

/****************************************************************************
*
*                            Open Watcom Project
*
*    Portions Copyright (c) 1983-2002 Sybase, Inc. All Rights Reserved.
*
*  ========================================================================
*
*    This file contains Original Code and/or Modifications of Original
*    Code as defined in and that are subject to the Sybase Open Watcom
*    Public License version 1.0 (the 'License'). You may not use this file
*    except in compliance with the License. BY USING THIS FILE YOU AGREE TO
*    ALL TERMS AND CONDITIONS OF THE LICENSE. A copy of the License is
*    provided with the Original Code and Modifications, and is also
*    available at www.sybase.com/developer/opensource.
*
*    The Original Code and all software distributed under the License are
*    distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
*    EXPRESS OR IMPLIED, AND SYBASE AND ALL CONTRIBUTORS HEREBY DISCLAIM
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*    NON-INFRINGEMENT. Please see the License for the specific language
*    governing rights and limitations under the License.
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*  ========================================================================
*
* Description:  WHEN YOU FIGURE OUT WHAT THIS FILE DOES, PLEASE
*               DESCRIBE IT HERE!
*
****************************************************************************/


#include "variety.h"
#include "extfunc.h"
#undef __INLINE_FUNCTIONS__
#include <stddef.h>
#include <string.h>
#include <search.h>

typedef int lcomp( const void *, const void * );
#if defined(_M_IX86)
    #pragma aux (__outside_CLIB) lcomp;
#endif

_WCRTLINK void *lsearch( 
    const void *key, 
    void *base, 
    unsigned *num,
    unsigned width, 
    int (*compare)( 
        const void *, 
        const void * 
        ) 
    )
{
    lcomp *cmp = (lcomp *)compare;
    unsigned  n;

    for( n = *num; n; --n ) 
    {
        if( cmp( key, base ) == 0 ) 
            return( base );
        base = ((char *)base) + width;
    }
    memcpy( base, key, width );
    ++*num;
    return( base );
}