qsort(3C) qsort(3C)
NAME
qsort - quicker sort
SYNOPSIS
#include <stdlib.h>
void qsort (void* base, size_t nel, size_t width, int (*compar)
(const void *, const void *));
DESCRIPTION
qsort is an implementation of the quicker-sort algorithm. It
sorts a table of data in place. The contents of the table are
sorted in ascending order according to the user-supplied
comparison function.
base points to the element at the base of the table. nel is
the number of elements in the table. width specifies the size
of each element in bytes. compar is the name of the
comparison function, which is called with two arguments that
point to the elements being compared. The function must
return an integer less than, equal to, or greater than zero to
indicate if the first argument is to be considered less than,
equal to, or greater than the second.
The contents of the table are sorted in ascending order
according to the user supplied comparison function.
REFERENCES
bsearch(3C), lsearch(3C), sort(1), string(3C)
NOTICES
The comparison function need not compare every byte, so
arbitrary data may be contained in the elements in addition to
the values being compared.
The relative order in the output of two items that compare as
equal is unpredictable.
Copyright 1994 Novell, Inc. Page 1