2 comb - combinatorial number
14 Return the combinatorial number C(x,y) which is defined as:
20 This function computes the number of combinations in which y things
21 may be chosen from x items ignoring the order in which they are chosen.
24 ; print comb(7,3), comb(7,4), comb(7,5), comb(3,0), comb(0,0)
27 ; print comb(2^31+1,2^31-1)
36 void zcomb(ZVALUE x, ZVALUE y, ZVALUE *res)
41 ## Copyright (C) 1999-2006 Landon Curt Noll
43 ## Calc is open software; you can redistribute it and/or modify it under
44 ## the terms of the version 2.1 of the GNU Lesser General Public License
45 ## as published by the Free Software Foundation.
47 ## Calc is distributed in the hope that it will be useful, but WITHOUT
48 ## ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
49 ## or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General
50 ## Public License for more details.
52 ## A copy of version 2.1 of the GNU Lesser General Public License is
53 ## distributed with calc under the filename COPYING-LGPL. You should have
54 ## received a copy with calc; if not, write to Free Software Foundation, Inc.
55 ## 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
57 ## @(#) $Revision: 30.1 $
58 ## @(#) $Id: comb,v 30.1 2007/03/16 11:10:42 chongo Exp $
59 ## @(#) $Source: /usr/local/src/cmd/calc/help/RCS/comb,v $
61 ## Under source code control: 1994/10/20 04:03:02
62 ## File existed as early as: 1994
64 ## chongo <was here> /\oo/\ http://www.isthe.com/chongo/
65 ## Share and enjoy! :-) http://www.isthe.com/chongo/tech/comp/calc/