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58 lines
1.7 KiB
Plaintext
58 lines
1.7 KiB
Plaintext
NAME
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places - return number of decimal places
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SYNOPSIS
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places(x)
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TYPES
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x real
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return integer
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DESCRIPTION
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If x has a finite decimal representation (with nonzero last digit),
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places(x) returns the number of digits after the decimal point in this
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representation; this is the least non-negative integer n for which
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10^n * x is an integer.
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If x does not have a finite decimal representation, places(x) returns -1.
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EXAMPLE
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> print places(3), places(0.0123), places(3.70), places(1e-10), places(3/7)
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0 4 1 10 -1
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LIMITS
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none
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LINK LIBRARY
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long qplaces(NUMBER *x)
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SEE ALSO
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digits
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## Copyright (C) 1999 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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## 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
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##
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## @(#) $Revision: 29.2 $
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## @(#) $Id: places,v 29.2 2000/06/07 14:02:33 chongo Exp $
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## @(#) $Source: /usr/local/src/cmd/calc/help/RCS/places,v $
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##
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## Under source code control: 1995/10/03 10:40:02
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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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