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64 lines
1.9 KiB
Plaintext
64 lines
1.9 KiB
Plaintext
NAME
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cp - cross product of two 3 element vectors
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SYNOPSIS
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cp(x, y)
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TYPES
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x, y 1-dimensional matrices with 3 elements
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return 1-dimensional matrix with 3 elements
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DESCRIPTION
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Calculate the product of two 3 1-dimensional matrices.
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If x has elements (x0, x1, x2), and y has elements (y0, y1, y2),
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cp(x,y) returns the matrix of type [0:2] with elements:
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{x1 * y2 - x2 * y1, x3 * y1 - x1 * y3, x1 * y2 - x2 * y1}
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EXAMPLE
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> mat x[3] = {2,3,4}
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> mat y[3] = {3,4,5}
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> print cp(x,y)
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mat [3] (3 elements, 3 nonzero):
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[0] = -1
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[1] = 2
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[2] = -1
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LIMITS
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The components of the matrices are to be of types for which the
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required algebraic operations have been defined.
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LINK LIBRARY
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MATRIX *matcross(MATRIX *x, MATRIX *y)
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SEE ALSO
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dp
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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: cp,v 29.2 2000/06/07 14:02:33 chongo Exp $
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## @(#) $Source: /usr/local/src/cmd/calc/help/RCS/cp,v $
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##
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## Under source code control: 1995/10/05 04:52:26
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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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