redhat man page for lsearch

LSEARCH(3)						     Linux Programmer's Manual							LSEARCH(3)

NAME
       lfind, lsearch - linear search of an array.

SYNOPSIS
       #include <search.h>

       void *lfind(const void *key, const void *base, size_t *nmemb,
	      size_t size, int(*compar)(const void *, const void *));

       void *lsearch(const void *key, void *base, size_t *nmemb,
	      size_t size, int(*compar)(const void *, const void *));

DESCRIPTION
       lfind() and lsearch() perform a linear search for key in the array base which has *nmemb elements of size bytes each.  The comparison func-
       tion referenced by compar is expected to have two arguments which point to the key object and to an array member, in that order, and  which
       returns zero if the key object matches the array member, and non-zero otherwise.

       If lsearch() does not find a matching element, then the key object is inserted at the end of the table, and *nmemb is incremented.

RETURN VALUE
       lfind()	returns a pointer to a matching member of the array, or NULL if no match is found.  lsearch() returns a pointer to a matching mem-
       ber of the array, or to the newly added member if no match is found.

SEE ALSO
       bsearch(3), hsearch(3), tsearch(3)

GNU
								    1999-09-27								LSEARCH(3)