mirror of https://github.com/f4exb/sdrangel.git
44 lines
1.2 KiB
C++
44 lines
1.2 KiB
C++
// ----------------------------------------------------------------------------
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// complex.h -- Complex arithmetic
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//
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// Copyright (C) 2006-2008
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// Dave Freese, W1HKJ
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// Copyright (C) 2008
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// Stelios Bounanos, M0GLD
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//
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// This file is part of fldigi.
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//
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// Fldigi is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// Fldigi is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with fldigi. If not, see <http://www.gnu.org/licenses/>.
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// ----------------------------------------------------------------------------
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#ifndef _COMPLEX_H
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#define _COMPLEX_H
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#include <cmath>
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#include <complex>
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typedef std::complex<float> cmplx;
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inline cmplx cmac (const cmplx *a, const cmplx *b, int ptr, int len) {
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cmplx z;
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ptr %= len;
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for (int i = 0; i < len; i++) {
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z += a[i] * b[ptr];
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ptr = (ptr + 1) % len;
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}
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return z;
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}
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#endif
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