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NAME
scale - scale a number or numbers in a value by a power of 2
SYNOPSIS
scale(x, n)
TYPES
If x is an xx-object, scale(x, n) requires xx_scale() to have been
defined; conditions on x and n and the type of value returned are
determined by the definition of xx_scale().
For other x:
x number (real or complex) or matrix
n integer
return same type as x
DESCRIPTION
Returns the value of 2^n * x.
scale(x,n) returns the same as x << n and x >> -n if x is an integer
for which 2^n * x is an integer.
EXAMPLE
; print scale(3, 2), scale(3,1), scale(3,0), scale(3,-1), scale(3,-2)
12 6 3 1.5 0.75
LIMITS
For non-object x, abs(n) < 2^31
LINK LIBRARY
NUMBER *qscale(NUMBER *x, long n)
COMPLEX *c_scale(COMPLEX *x, long n)
MATRIX *matscale(MATRIX *x, long n)
SEE ALSO
obj
## Copyright (C) 1999-2006,2021 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: 1995/12/18 12:34:58
## 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/
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