mirror of
https://github.com/f4exb/sdrangel.git
synced 2024-12-20 08:31:01 -05:00
44 lines
1.2 KiB
C
44 lines
1.2 KiB
C
|
// ----------------------------------------------------------------------------
|
||
|
|
// 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
|