1NAME
2    pi - evaluate pi to specified accuracy
3
4SYNOPSIS
5    pi([eps])
6
7TYPES
8    eps		nonzero real, defaults to epsilon()
9
10    return	real
11
12DESCRIPTION
13    Returns a multiple of eps differing from the true value of pi by
14    less than 0.75 eps, and in nearly all cases by less than 0.5 eps.
15
16EXAMPLE
17    ; print pi(1e-5), pi(1e-10), pi(1e-15), pi(1e-20)
18    3.14159 3.1415926536 3.141592653589793 3.14159265358979323846
19
20LIMITS
21    eps > 0
22
23LINK LIBRARY
24    NUMBER *qpi(NUMBER *eps)
25
26SEE ALSO
27    atan2
28
29## Copyright (C) 1999-2006  Landon Curt Noll
30##
31## Calc is open software; you can redistribute it and/or modify it under
32## the terms of the version 2.1 of the GNU Lesser General Public License
33## as published by the Free Software Foundation.
34##
35## Calc is distributed in the hope that it will be useful, but WITHOUT
36## ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
37## or FITNESS FOR A PARTICULAR PURPOSE.	 See the GNU Lesser General
38## Public License for more details.
39##
40## A copy of version 2.1 of the GNU Lesser General Public License is
41## distributed with calc under the filename COPYING-LGPL.  You should have
42## received a copy with calc; if not, write to Free Software Foundation, Inc.
43## 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
44##
45## Under source code control:	1995/10/25 04:03:46
46## File existed as early as:	1995
47##
48## chongo <was here> /\oo/\	http://www.isthe.com/chongo/
49## Share and enjoy!  :-)	http://www.isthe.com/chongo/tech/comp/calc/
50