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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  considered  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)