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/*!
* \file
* \brief Fixed-point classes test program
* \author Johan Bergman and Adam Piatyszek
*
* -------------------------------------------------------------------------
*
* Copyright (C) 1995-2010 (see AUTHORS file for a list of contributors)
*
* This file is part of IT++ - a C++ library of mathematical, signal
* processing, speech processing, and communications classes and functions.
*
* IT++ 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.
*
* IT++ 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 IT++. If not, see <http://www.gnu.org/licenses/>.
*
* -------------------------------------------------------------------------
*/
#include <itpp/itfixed.h>
#include <iomanip>
using namespace itpp;
using namespace std;
int main()
{
// This is a hack for improper rounding under MinGW
cout.precision(8);
cout << "Testing declaration, initialization and conversion" << endl;
cout << "==================================================" << endl;
int shift(10); // -64...+63 (0 is default)
int wordlen(20); // 1...64 (64 is default)
e_mode emode(TC); // TC or US (TC is default)
o_mode omode(WRAP); // WRAP or SAT (WRAP is default)
q_mode qmode(TRN); // RND or TRN (TRN is default)
Stat *stat_ptr(0); // 0 or Stat* value (0 is default)
cout << "For double and complex<double>:" << endl;
double real_value(3.14159265358979323846);
cout << " real_value = " << real_value << endl;
complex<double> complex_value(100.0 / 3.0, 200.0 / 3.0);
cout << " complex_value = " << complex_value << endl;
cout << "For Fix and CFix:" << endl;
Fix the_fix(real_value, shift, wordlen, emode, omode, qmode, stat_ptr);
cout << " the_fix = " << double(the_fix) << endl;
CFix the_cfix(complex_value, 0.0, shift, wordlen, emode, omode, qmode,
stat_ptr);
cout << " the_cfix = " << complex<double>(the_cfix) << endl;
cout << "For Fixed and CFixed:" << endl;
Fixed<20, TC, WRAP, TRN> the_fixed(real_value, shift, stat_ptr);
cout << " the_fixed = " << double(the_fixed) << endl;
CFixed<20, TC, WRAP, TRN> the_cfixed(complex_value, 0.0, shift, stat_ptr);
cout << " the_cfixed = " << complex<double>(the_cfixed) << endl;
cout << "For Fixed and CFixed declared using a typedef:" << endl;
fixed20 the_fixed20(real_value, shift, stat_ptr);
cout << " the_fixed20 = " << double(the_fixed20) << endl;
cfixed20 the_cfixed20(complex_value, 0.0, shift, stat_ptr);
cout << " the_cfixed20 = " << complex<double>(the_cfixed20) << endl;
cout << "For Fix and CFix declared using a factory:" << endl;
Fix the_fix20(FIX20);
the_fix20.set(real_value, shift);
cout << " the_fix20 = " << double(the_fix20) << endl;
CFix the_cfix20(FIX20);
the_cfix20.set(complex_value, shift);
cout << " the_cfix20 = " << complex<double>(the_cfix20) << endl << endl;
cout << "Testing Array/Vec/Mat declarations and operations" << endl;
cout << "=================================================" << endl;
int vec_length(2);
cout << "For Vec<Fix> and Vec<CFix>:" << endl;
fixvec the_fixvec(vec_length, FIX20);
the_fixvec = Fix(real_value, shift);
cout << " the_fixvec = " << to_vec(the_fixvec) << endl;
cfixvec the_cfixvec(vec_length, FIX20);
the_cfixvec = CFix(complex_value, 0.0, shift);
cout << " the_cfixvec = " << to_cvec(the_cfixvec) << endl;
cout << " the_cfixvec + the_fixvec = " << to_cvec(the_cfixvec + the_fixvec)
<< endl;
cout << " the_cfixvec - the_fixvec = " << to_cvec(the_cfixvec - the_fixvec)
<< endl;
cout << " the_cfixvec * the_fixvec = "
<< complex<double>(the_cfixvec * the_fixvec) << endl;
cout << " the_cfixvec / the_fix = " << to_cvec(the_cfixvec / the_fix)
<< endl << endl;
cout << "Testing functions" << endl;
cout << "=================" << endl;
cout << "Function is_fix:" << endl;
Array<Array<fixvec> > the_array2d_fixvec;
cout << " is_fix(the_array2d_fixvec) = " << is_fix(the_array2d_fixvec)
<< endl;
cout << "Function set_fix:" << endl;
vec original_float = "0:7";
fixvec resulting_fix(FIX3);
set_fix(resulting_fix, original_float, 0);
cout << " original_float = " << original_float << " => resulting_fix = "
<< resulting_fix << endl;
vec resulting_float(FIX3);
set_fix(resulting_float, original_float, 0);
cout << " original_float = " << original_float << " => resulting_float = "
<< resulting_float << endl;
cout << "Function lshift_fix:" << endl;
Fix fix_to_be_lshifted(FIX16);
fix_to_be_lshifted = 77;
cout << " before lshift: " << fix_to_be_lshifted << " , rep: "
<< fix_to_be_lshifted.get_re() << endl;
lshift_fix(fix_to_be_lshifted, 1);
cout << " after lshift: " << fix_to_be_lshifted << " , rep: "
<< fix_to_be_lshifted.get_re() << endl;
cout << "Function rshift_fix:" << endl;
Fix fix_to_be_rshifted(FIX16);
fix_to_be_rshifted = Fix(3.14, 8);
cout << " before rshift: " << fix_to_be_rshifted << " , rep: "
<< fix_to_be_rshifted.get_re() << endl;
rshift_fix(fix_to_be_rshifted, 6, RND);
cout << " after rshift: " << fix_to_be_rshifted << " , rep: "
<< fix_to_be_rshifted.get_re() << endl;
return 0;
}
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