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## Copyright (C) 2007 R.G.H. Eschauzier <reschauzier@yahoo.com>
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## This program is free software; you can redistribute it and/or modify it under
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## the terms of the GNU General Public License as published by the Free Software
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## Foundation; either version 3 of the License, or (at your option) any later
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## This program is distributed in the hope that it will be useful, but WITHOUT
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## ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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## FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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## You should have received a copy of the GNU General Public License along with
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## this program; if not, see <http://www.gnu.org/licenses/>.
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## Adapted by Carnë Draug on 2011 <carandraug+dev@gmail.com>
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## This function is necessary for impinvar and invimpinvar of the signal package
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## Round complex number to nearest real number
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function p_out = to_real(p_in)
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p_out = abs(p_in) .* sign(real(p_in));