lsearch(3) - NetBSD Manual Pages

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LSEARCH(3)              NetBSD Library Functions Manual             LSEARCH(3)


NAME

     lsearch, lfind -- linear searching routines


LIBRARY

     Standard C Library (libc, -lc)


SYNOPSIS

     #include <search.h>

     void *
     lsearch(const void *key, void *base, size_t *nelp, size_t width,
         int (*compar)(const void *, const void *));

     void *
     lfind(const void *key, const void *base, size_t *nelp, size_t width,
         int (*compar)(const void *, const void *));


DESCRIPTION

     The functions lsearch(), and lfind() provide basic linear searching func-
     tionality.

     base is the pointer to the beginning of an array.  The argument nelp is
     the current number of elements in the array, where each element is width
     bytes long.  The compar argument points to a function which compares its
     two arguments and returns zero if they are matching, and non-zero other-
     wise.

     The lsearch() and lfind() functions return a pointer into the array ref-
     erenced by base where key is located.  If key does not exist, lfind()
     will return a null pointer and lsearch() will add it to the array.  When
     an element is added to the array by lsearch() the location referenced by
     the argument nelp is incremented by one.


SEE ALSO

     bsearch(3), db(3)


STANDARDS

     The lsearch() and lfind() functions conform to IEEE Std 1003.1-2001
     (``POSIX.1'').

NetBSD 9.3                       July 6, 2005                       NetBSD 9.3