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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 [t] = sinh(z)
//
// PURPOSE
// element wise hyperbolic sinus
//
// METHOD
// based on the formula sinh(z) = -i sin(i z)
//
rhs = argn(2);
if rhs <> 1 then
error(msprintf(gettext("%s: Wrong number of input argument(s): %d expected.\n"),"sinh",1));
end
if type(z)<>1 then
error(msprintf(gettext("%s: Wrong type for input argument #%d: Real or complex matrix expected.\n"),"sinh",1));
end
if isreal(z) then
t = imag(sin(imult(z)))
else
t = -imult(sin(imult(z)))
end
endfunction
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