LSEARCH (3)
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 function 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 member of the array, or to the newly added member if no
match is found.
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