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/*!
* \file
* \brief Test program for the LLR class
* \author Erik G. Larsson
*
* -------------------------------------------------------------------------
*
* IT++ - C++ library of mathematical, signal processing, speech processing,
* and communications classes and functions
*
* Copyright (C) 1995-2008 (see AUTHORS file for a list of contributors)
*
* 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 2 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, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
* -------------------------------------------------------------------------
*/
#include <itpp/itcomm.h>
#include <iomanip>
using namespace itpp;
using namespace std;
int main()
{
// This is a hack for improper rounding under MinGW
cout.precision(13);
LLR_calc_unit lcu1; // standard table resolution
LLR_calc_unit lcu2(10,7,9); // low table resolution
LLR_calc_unit lcu3(2,15,0); // low table resolution and low LLR granuality
LLR_calc_unit lcu4(10,0,0); // this gives logexp=logmax
cout << lcu1 << endl;
cout << lcu2 << endl;
cout << lcu3 << endl;
cout << lcu4 << endl;
cout << "Testing Jacobian logarithm with four different resolutions." << endl;
for (double x = 0.0; x < 10; x += 0.1) {
cout << "JacLog(" << x << ") = "
<< lcu1.to_double(lcu1.logexp(lcu1.to_qllr(x))) << " ; "
<< lcu2.to_double(lcu2.logexp(lcu2.to_qllr(x))) << " ; "
<< lcu3.to_double(lcu3.logexp(lcu3.to_qllr(x))) << " ; "
<< lcu4.to_double(lcu4.logexp(lcu4.to_qllr(x)))
<< endl;
}
cout << "-------------------" << endl;
cout << "Some special cases:" << endl;
cout << lcu1.to_double(lcu1.Boxplus(lcu1.to_qllr(100.0), lcu1.to_qllr(0.75)))
<< endl;
cout << lcu1.to_double(lcu1.Boxplus(lcu1.to_qllr(100.0), lcu1.to_qllr(-0.75)))
<< endl;
cout << lcu1.to_double(lcu1.Boxplus(lcu1.to_qllr(-100.0), lcu1.to_qllr(0.75)))
<< endl;
cout << lcu1.to_double(lcu1.Boxplus(lcu1.to_qllr(-100.0), lcu1.to_qllr(-0.75)))
<< endl;
cout << lcu1.to_double(lcu1.Boxplus(lcu1.to_qllr(0.0), lcu1.to_qllr(0.75)))
<< endl;
cout << lcu1.to_double(lcu1.Boxplus(lcu1.to_qllr(0.0), lcu1.to_qllr(-0.75)))
<< endl;
cout << lcu1.to_double(lcu1.Boxplus(lcu1.to_qllr(3.75), lcu1.to_qllr(-1.25)))
<< endl;
cout << lcu1.to_double(lcu1.Boxplus(lcu1.to_qllr(-1.25), lcu1.to_qllr(3.75)))
<< endl;
cout << lcu1.to_double(lcu1.Boxplus(lcu1.to_qllr(-3.75), lcu1.to_qllr(1.25)))
<< endl;
cout << lcu1.to_double(lcu1.Boxplus(lcu1.to_qllr(1.25), lcu1.to_qllr(-3.75)))
<< endl;
cout << lcu1.to_double(lcu1.Boxplus(lcu1.to_qllr(3.75), lcu1.to_qllr(1.25)))
<< endl;
cout << lcu1.to_double(lcu1.Boxplus(lcu1.to_qllr(1.25), lcu1.to_qllr(3.75)))
<< endl;
return 0;
}
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