.TH QSORT 3F
.UC
.SH NAME
qsort \- quick sort
.SH SYNOPSIS
.B subroutine qsort (array, len, isize, compar)
.br
.B external compar
.br
.B integer*2 compar
.SH DESCRIPTION
One dimensional
.I array
contains the elements to be sorted.
.I len
is the number of elements in the array.
.I isize
is the size of an element, typically -
.sp 1
.in +5
4 for
.B integer
and
.B real
.br
8 for
.B "double precision"
.br
(length of character object) for
.B character
arrays
.in -5
.sp 1
.I Compar
is the name of a user supplied integer*2 function.
This function will be called with 2 arguments that will be elements of
.I array.
The function must return -
.sp 1
.in +5
negative if arg 1 is logically less than arg 2
.br
zero if arg 1 is logically equal to arg 2
.br
positive if arg 1 is logically greater than arg 2
.in -5
.sp 1
On return, the elements of
.I array
will be sorted.
.SH FILES
/usr/lib/libU77.a
.SH "SEE ALSO"
qsort(3)