Add a useful package (from Source forge) for octave

[CreaPhase.git] / octave_packages / signal-1.1.3 / private / to_real.m

diff --git a/octave_packages/signal-1.1.3/private/to_real.m b/octave_packages/signal-1.1.3/private/to_real.m
new file mode 100644 (file)
index 0000000..a865de9
--- /dev/null
+++ b/octave_packages/signal-1.1.3/private/to_real.m
@@ -0,0 +1,23 @@
+## Copyright (C) 2007 R.G.H. Eschauzier <reschauzier@yahoo.com>
+##
+## This program is free software; you can redistribute it and/or modify it under
+## the terms of the GNU General Public License as published by the Free Software
+## Foundation; either version 3 of the License, or (at your option) any later
+## version.
+##
+## This program is distributed in the hope that it will be useful, but WITHOUT
+## ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+## FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
+## details.
+##
+## You should have received a copy of the GNU General Public License along with
+## this program; if not, see <http://www.gnu.org/licenses/>.
+
+## Adapted by Carnë Draug on 2011 <carandraug+dev@gmail.com>
+
+## This function is necessary for impinvar and invimpinvar of the signal package
+
+## Round complex number to nearest real number
+function p_out = to_real(p_in)
+  p_out = abs(p_in) .* sign(real(p_in));
+endfunction