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NAME
    calclevel - current calculation level

SYNOPSIS
    calclevel()

TYPES
    return	nonnegative integer

DESCRIPTION
    This function returns the calculation level at which it is called.
    When a command is being read from a terminal or from a file,
    calc is at calculation level zero.	The level is increased
    by 1 each time calculation starts of a user-defined function
    or of eval(S) for some expression S which evaluates to a string.  It
    decreases to zero if an error occurs or a quit or abort statement
    is executed.  Otherwise, it decreases by 1 when the calculation
    is completed.  Except when an error occurs or abort is executed,
    the input level is not affected by changes in the calculation level.

    Zero calculation level is also called top calculation level; greater
    values of calclevel() indicate calculation is occurring at greater
    depths.

EXAMPLE
    n/a

LIMITS
    none

LINK LIBRARY
    none

SEE ALSO
    eval, read, quit, abort, inputlevel

## Copyright (C) 1999  Landon Curt Noll
##
## Calc is open software; you can redistribute it and/or modify it under
## the terms of the version 2.1 of the GNU Lesser General Public License
## as published by the Free Software Foundation.
##
## Calc is distributed in the hope that it will be useful, but WITHOUT
## ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
## or FITNESS FOR A PARTICULAR PURPOSE.	 See the GNU Lesser General
## Public License for more details.
##
## A copy of version 2.1 of the GNU Lesser General Public License is
## distributed with calc under the filename COPYING-LGPL.  You should have
## received a copy with calc; if not, write to Free Software Foundation, Inc.
## 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
##
## @(#) $Revision: 30.1 $
## @(#) $Id: calclevel,v 30.1 2007/03/16 11:10:42 chongo Exp $
## @(#) $Source: /usr/local/src/cmd/calc/help/RCS/calclevel,v $
##
## Under source code control:	1999/10/31 06:01:21
## File existed as early as:	1999
##
## chongo <was here> /\oo/\	http://www.isthe.com/chongo/
## Share and enjoy!  :-)	http://www.isthe.com/chongo/tech/comp/calc/