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/*!
* \file
* \brief Implementation of a set of functions for Fix, Fixed, CFix and
* CFixed classes
* \author Johan Bergman
*
* -------------------------------------------------------------------------
*
* 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/fixed/fix_functions.h>
namespace itpp {
vec to_vec(const fixvec &v)
{
vec temp(v.length());
for (int i=0; i<v.length(); i++) {
temp(i) = v(i).unfix();
}
return temp;
}
cvec to_cvec(const cfixvec &v)
{
cvec temp(v.length());
for (int i=0; i<v.length(); i++) {
temp(i) = v(i).unfix();
}
return temp;
}
mat to_mat(const fixmat &m)
{
mat temp(m.rows(), m.cols());
for (int i=0; i<m.rows(); i++) {
for (int j=0; j<m.cols(); j++) {
temp(i,j) = m(i,j).unfix();
}
}
return temp;
}
cmat to_cmat(const cfixmat &m)
{
cmat temp(m.rows(), m.cols());
for (int i=0; i<m.rows(); i++) {
for (int j=0; j<m.cols(); j++) {
temp(i,j) = m(i,j).unfix();
}
}
return temp;
}
Fix abs(const Fix &x)
{
fixrep tmp = x.get_re();
return Fix((tmp >= 0 ? tmp : -tmp), // Risk for overflow!
x.get_shift(),
0, 0);
}
Fix real(const CFix &x)
{
return Fix(x.get_re(),
x.get_shift(),
0, 0);
}
Fix imag(const CFix &x)
{
return Fix(x.get_im(),
x.get_shift(),
0, 0);
}
CFix conj(const CFix &x)
{
return CFix(x.get_re(),
-x.get_im(),
x.get_shift(),
0, 0);
}
} // namespace itpp
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