NAME
    places - return number of decimal places

SYNOPSIS
    places(x)

TYPES
    x		real

    return	integer

DESCRIPTION
    If x has a finite decimal representation (with nonzero last digit),
    places(x) returns the number of digits after the decimal point in this
    representation; this is the least non-negative integer n for which
    10^n * x is an integer.

    If x does not have a finite decimal representation, places(x) returns -1.

EXAMPLE
    > print places(3), places(0.0123), places(3.70), places(1e-10), places(3/7)
    0 4 1 10 -1

LIMITS
    none

LINK LIBRARY
    long qplaces(NUMBER *x)

SEE ALSO
    digits

## 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: places,v 29.1 1999/12/14 09:16:02 chongo Exp $
## @(#) $Source: /usr/local/src/cmd/calc/help/RCS/places,v $
##
## Under source code control:	1995/10/03 10:40:02
## 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/
