norm

来自「Calc Software Package for Number Calc」· 代码 · 共 64 行

NAME
    norm - calculate a norm of a value

SYNOPSIS
    norm(x)

TYPES
    If x is an object of type xx, the function xx_norm has to have been
    defined; what this does will be determined by the definition.

    For non-object x:

    x		number (real or complex)

    return	real

DESCRIPTION
    For real x, norm(x) returns:

	 x^2.

    For complex x, norm(x) returns:

	re(x)^2 + im(x)^2.

EXAMPLE
    ; print norm(3.4), norm(-3.4), norm(3 + 4i), norm(4 - 5i)
    11.56 11.56 25 41

LIMITS
    none

LINK LIBRARY
    void normvalue(VALUE *x, VALUE *result)

SEE ALSO
    cmp, epsilon, hypot, abs, near, obj

## 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: 29.3 $
## @(#) $Id: norm,v 29.3 2006/05/07 07:25:46 chongo Exp $
## @(#) $Source: /usr/local/src/cmd/calc/help/RCS/norm,v $
##
## Under source code control:	1995/10/25 04:03:46
## 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/