Copyright (c) 1983, 1993
The Regents of the University of California. All rights reserved.

%sccs.include.proprietary.roff%

@(#)qsort.3 8.1 (Berkeley) 06/05/93

C 5 qsort - quick sort subroutine qsort (array, len, isize, compar)

external compar

integer*2 compar

One dimensional array contains the elements to be sorted. len is the number of elements in the array. isize is the size of an element, typically - 4 for integer and real

8 for "double precision" or complex

16 for "double complex"

(length of character object) for character arrays Compar is the name of a user supplied integer*2 function that will determine the sorting order. This function will be called with 2 arguments that will be elements of array. The function must return - negative if arg 1 is considered to precede arg 2

zero if arg 1 is equivalent to arg 2

positive if arg 1 is considered to follow arg 2 On return, the elements of array will be sorted.

qsort(3)