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