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// Scilab ( http://www.scilab.org/ ) - This file is part of Scilab
// Copyright (C) INRIA
//
// 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 m=findm(chi)
//Search for m such that chi = %k(1-m)/%k(m)
//!
if chi < 1 then
t=1;
tn=2;
m=0.99999;
mn=2;
v=16*exp(-%pi/chi);
while abs(t-tn) > 10.*%eps
t=tn;
lln=log(16/(1-m));
k1=delip(1,sqrt(1-m));
k=delip(1,sqrt(m));
y=(k1*lln/%pi)-k;
mn=m;
m=1-v*exp((-%pi*y)/k1);
tn=m+mn;
end
else
t=1;
tn=2;
m=0.00001;
mn=0.1;
v=16*exp(-%pi*chi);
while abs(t-tn) > 10.*%eps
t=tn;
lln=log(16/m);
k1=delip(1,sqrt(1-m));
k=delip(1,sqrt(m));
y=(k*lln/%pi)-k1;
mn=m;
m=v*exp((-%pi*y)/k);
tn=m+mn;
end
end
endfunction
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