NAME
    pi - evaluate pi to specified accuracy

SYNOPSIS
    pi([eps])

TYPES
    eps		nonzero real, defaults to epsilon()

    return	real

DESCRIPTION
    Returns a multiple of eps differing from the true value of pi by
    less than 0.75 eps, and in nearly all cases by less than 0.5 eps.

EXAMPLE
    > print pi(1e-5), pi(1e-10), pi(1e-15), pi(1e-20)
    3.14159 3.1415926536 3.141592653589793 3.14159265358979323846

LIMITS
    eps > 0

LINK LIBRARY
    NUMBER *qpi(NUMBER *eps)

SEE ALSO
    XXX - fill in

## 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.
## 59 Temple Place, Suite 330, Boston, MA  02111-1307, USA.
##
## @(#) $Revision: 29.1 $
## @(#) $Id: pi,v 29.1 1999/12/14 09:16:02 chongo Exp $
## @(#) $Source: /usr/local/src/cmd/calc/help/RCS/pi,v $
##
## Under source code control:	1995/10/25 04:03:46
## File existed as early as:	1995
##
## chongo <was here> /\oo/\	http://reality.sgi.com/chongo/
## Share and enjoy!  :-)	http://reality.sgi.com/chongo/tech/comp/calc/