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// Scilab ( http://www.scilab.org/ ) - This file is part of Scilab
// Copyright (C) INRIA, Serge Steer
// Copyright (C) DIGITEO - 2011 - Allan CORNET
//
// 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 y = asec(x)
//Inverse secant.
rhs = argn(2);
if rhs <> 1 then
error(msprintf(gettext("%s: Wrong number of input argument(s): %d expected.\n"),"asec", 1));
end
if and(type(x) <> [1 5]) then
error(msprintf(gettext("%s: Wrong type for input argument #%d: Real or complex, sparse or full matrix expected.\n"), "asec", 1));
end
y = acos(ones(x)./x);
endfunction
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