// 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-en.txt

function x=sinhm(a)
//square matrix hyperbolic sine

  rhs = argn(2);

  if rhs <> 1 then
    error(msprintf(gettext("%s: Wrong number of input argument(s): %d expected.\n"),"sinhm",1));
  end

  if type(a)<>1 then
    error(msprintf(gettext("%s: Wrong type for input argument #%d: Real or complex matrix expected.\n"),"sinhm",1));
  end

  if a==[] then x=[],return,end

  x=(expm(a)-expm(-a))/2;

endfunction
