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NAME
den - denominator of a real number
SYNOPSIS
den(x)
TYPES
x real
return integer
DESCRIPTION
For real x, den(x) returns the denominator of x when x is expressed
in lowest terms with positive denominator. In calc,
real values are actually rational values. Each calc real
value can be uniquely expressed as:
n / d
where:
n and d are integers
gcd(n,d) == 1
d > 0
The denominator for this n/d is d.
EXAMPLE
; print den(7), den(-1.25), den(121/33)
1 4 3
LIMITS
none
LINK LIBRARY
NUMBER *qden(NUMBER *x)
SEE ALSO
num
## 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.
## 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
##
## Under source code control: 1995/10/05 04:52:26
## File existed as early as: 1995
##
## chongo <was here> /\oo/\ http://www.isthe.com/chongo/
## Share and enjoy! :-) http://www.isthe.com/chongo/tech/comp/calc/