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// Scilab ( http://www.scilab.org/ ) - This file is part of Scilab
// Copyright (C) 200 - INRIA - Carlos Klimann
//
// This file must be used under the terms of the CeCILL.
// This source file is licensed as described in the file COPYING, which
// you should have received as part of this distribution. The terms
// are also available at
// http://www.cecill.info/licences/Licence_CeCILL_V2.1-en.txt
//
function [s,index] = nanmax(x,orient)
//
//This function gives for a real or a numerical matrix x a his largest
//element m (but ignoring the NANs).
//
//For x, a numerical vector or matrix, m=nanmax(x) returns in scalar m
//the largest element of x (ignoring the NANs). The form [m,index] =
//nanmax(x,orient) gives in addition of the value of the largest element
//of x (ignoring the NANs) in scalar m, and the index of this element
//in x, as a 2-vector.
//
//m=nanmax(x,'r') gives in the 1xsize(x,2) matrix m the largest elements
//(ignoring the NANs) of each column of x. If the form
//[m,index]=nanmax(x,'r') is used, the elements of the 1xsize(x,2)
//matrix index are the indexes of the largest elements (ignoring the
//NANs) of each column of x in the corresponding column.
//
//m=nanmax(x,'c') gives in the size(x,2)x1 matrix m the largest elements
//(ignoring the NANs) of each row of x. If the form
//[m,index]=nanmax(x,'c') is used, the elements of the size(x,2)x1
//matrix index are the indexes of the largest elements (ignoring the
//NANs) of each row of x in the corresponding row.
//
//
// correction of bug 1239 (Bruno)
[lhs, rhs] = argn(0)
if rhs == 0 then
error(msprintf(gettext("%s: Wrong number of input arguments: %d to %d expected.\n"),"nanmax",1,2))
end
if rhs==1 then orient="*",end
if orient==1 then orient="r",end
if orient==2 then orient="c",end
if x==[]|(size(x,"*")==1&isnan(x)) then s=[],index=[],return,end
isn=isnan(x)
x(isn)=-%inf
[s,index]=max(x,orient)
s(find(and(isn,orient)))=%nan
endfunction
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