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50 lines
1.5 KiB
Plaintext
50 lines
1.5 KiB
Plaintext
NAME
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pi - evaluate pi to specified accuracy
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SYNOPSIS
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pi([eps])
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TYPES
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eps 0 < real < 1, defaults to epsilon()
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return real
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DESCRIPTION
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Returns a multiple of eps differing from the true value of pi by
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less than 0.75 eps, and in nearly all cases by less than 0.5 eps.
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EXAMPLE
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; print pi(1e-5), pi(1e-10), pi(1e-15), pi(1e-20)
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3.14159 3.1415926536 3.141592653589793 3.14159265358979323846
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LIMITS
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0 < eps < 1
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LINK LIBRARY
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NUMBER *qpi(NUMBER *eps)
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SEE ALSO
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atan2
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## Copyright (C) 1999-2006,2023 Landon Curt Noll
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##
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## Calc is open software; you can redistribute it and/or modify it under
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## the terms of the version 2.1 of the GNU Lesser General Public License
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## as published by the Free Software Foundation.
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##
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## Calc is distributed in the hope that it will be useful, but WITHOUT
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## ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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## or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General
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## Public License for more details.
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##
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## A copy of version 2.1 of the GNU Lesser General Public License is
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## distributed with calc under the filename COPYING-LGPL. You should have
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## received a copy with calc; if not, write to Free Software Foundation, Inc.
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## 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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##
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## Under source code control: 1995/10/25 04:03:46
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## File existed as early as: 1995
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##
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## chongo <was here> /\oo/\ http://www.isthe.com/chongo/
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## Share and enjoy! :-) http://www.isthe.com/chongo/tech/comp/calc/
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