sdrangel/sdrbase/dsp/complex.h

62 wiersze
2.8 KiB
C++

///////////////////////////////////////////////////////////////////////////////////////
// Copyright (C) 2012 maintech GmbH, Otto-Hahn-Str. 15, 97204 Hoechberg, Germany //
// written by Christian Daniel //
// Copyright (C) 2015-2016 Edouard Griffiths, F4EXB <f4exb06@gmail.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 as 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 V3 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/>. //
///////////////////////////////////////////////////////////////////////////////////////
// ----------------------------------------------------------------------------
// complex.h -- Complex arithmetic
//
// Copyright (C) 2006-2008
// Dave Freese, W1HKJ
// Copyright (C) 2008
// Stelios Bounanos, M0GLD
//
// This file is part of fldigi.
//
// Fldigi 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.
//
// Fldigi 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 fldigi. If not, see <http://www.gnu.org/licenses/>.
// ----------------------------------------------------------------------------
#ifndef _COMPLEX_H
#define _COMPLEX_H
#include <cmath>
#include <complex>
typedef std::complex<float> cmplx;
inline cmplx cmac (const cmplx *a, const cmplx *b, int ptr, int len) {
cmplx z;
ptr %= len;
for (int i = 0; i < len; i++) {
z += a[i] * b[ptr];
ptr = (ptr + 1) % len;
}
return z;
}
#endif