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54 lines
1.5 KiB
C++
54 lines
1.5 KiB
C++
#
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/*
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* Copyright (C) 2014 .. 2024
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* Jan van Katwijk (J.vanKatwijk@gmail.com)
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* Lazy Chair Computing
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*
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* This file is part of the Qt-DAB
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*
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* Qt-DAB 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 2 of the License, or
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* (at your option) any later version.
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*
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* Qt-DAB 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 Qt-DAB; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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* This LUT implementation of atan2 is a C++ translation of
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* a Java discussion on the net
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* http://www.java-gaming.org/index.php?topic=14647.0
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*/
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#pragma once
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#include <math.h>
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#include <stdio.h>
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#include <stdint.h>
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#include <cstdlib>
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#include <limits>
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#include "dab-constants.h"
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#
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class compAtan {
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public:
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compAtan (void);
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~compAtan (void);
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float atan2 (float, float);
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float argX (Complex);
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private:
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float *ATAN2_TABLE_PPY;
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float *ATAN2_TABLE_PPX;
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float *ATAN2_TABLE_PNY;
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float *ATAN2_TABLE_PNX;
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float *ATAN2_TABLE_NPY;
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float *ATAN2_TABLE_NPX;
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float *ATAN2_TABLE_NNY;
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float *ATAN2_TABLE_NNX;
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float Stretch;
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};
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