function m = maxx(x1,x2)
%MAXX Node. Returns the maximum of x1 and x2.
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%   Copyright (c) 2009-2015 Dominic Searson
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%   GPTIPS 2
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%   See also MINX, LTH, GTH, STEP, THRESH, IFLTE, GPAND, GPNOT, GPOR
m = max(x1,x2);