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  Include:   <search.h>
 
  Syntax:    void *lfind( void *key, void *base,
                          unsigned *num, unsigned width,
                          int (*compare)( void *key, void *elem ) );
 
             void *lsearch( void *key, void *base,
                            unsigned *num, unsigned width,
                            int (*compare)( void *key, void *elem ) );
 
  Returns:   a pointer if successful, or NULL if not.
 
  See also:  bsearch, lsearch, qsort
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