lans_iseven.m

来自「模式识别工具包」· M 代码 · 共 49 行

%	lans_iseven	- Check if number is even
%
%	[verdict]	= lans_iseven(candy)
%
%	_____OUTPUTS____________________________________________________________
%	verdict	boolean						(matrix)
%
%	_____INPUTS_____________________________________________________________
%	candy	integers					(matrix)
%
%	_____EXAMPLE____________________________________________________________
%	lans_iseven([1 2 3 4.5 5 6])	returns	[0 1 0 0 0 1]
%
%	_____SEE ALSO___________________________________________________________
%	lans_isint
%
%	(C) 1999.02.17 Kui-yu Chang
%	http://lans.ece.utexas.edu/~kuiyu

%	This program is free software; you can redistribute it and/or modify
%	it under the terms of the GNU General Public License as published by
%	the Free Software Foundation; either version 2 of the License, or
%	(at your option) any later version.
%
%	This program 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 General Public License for more details.
%
%	You should have received a copy of the GNU General Public License
%	along with this program; if not, write to the Free Software
%	Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA
%	or check
%			http://www.gnu.org/


function [verdict]	= lans_iseven(candy)

verdict		= zeros(size(candy));

%----------	eliminate non integers
isint		= find(lans_isint(candy)==1);

%----------	find even numbers among integers
divided2	= candy(isint)/2;
evens		= (divided2==floor(divided2));

verdict(isint)	= evens;