NAME

     qsort - sorts an array

SYNOPSIS

     #include <stdlib.h>

     void qsort(void *base, size_t nmemb, size_t size
          int (*compar))(const void *, const void *))

DESCRIPTION

     The qsort() function sorts an array with nmemb  elements  of
     size  size.   The  base  argument points to the start of the
     array.

     The contents of the array  are  sorted  in  ascending  order
     according  to  a  comparison  function pointed to by compar,
     which is called with two arguments that point to the objects
     being compared.

     The comparison function must return an  integer  less  than,
     equal to, or greater than zero if the first argument is con-
     sidered to be respectively less than, equal to,  or  greater
     than  the  second.   If  two members compare as equal, their
     order in the sorted array is undefined.

RETURN VALUE

     The qsort() function returns no value.

CONFORMING TO

     SVID 3, POSIX, BSD 4.3, ISO 9899

SEE ALSO

     sort(1)