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124 lines
2.4 KiB
C++
124 lines
2.4 KiB
C++
/*****************************************************************************
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OscSinCos.hpp
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By Laurent de Soras
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--- Legal stuff ---
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This program is free software. It comes without any warranty, to
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the extent permitted by applicable law. You can redistribute it
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and/or modify it under the terms of the Do What The Fuck You Want
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To Public License, Version 2, as published by Sam Hocevar. See
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http://sam.zoy.org/wtfpl/COPYING for more details.
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*Tab=3***********************************************************************/
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#if defined (ffft_OscSinCos_CURRENT_CODEHEADER)
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#error Recursive inclusion of OscSinCos code header.
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#endif
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#define ffft_OscSinCos_CURRENT_CODEHEADER
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#if ! defined (ffft_OscSinCos_CODEHEADER_INCLUDED)
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#define ffft_OscSinCos_CODEHEADER_INCLUDED
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/*\\\ INCLUDE FILES \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\*/
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#include <cmath>
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namespace std { }
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namespace ffft
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{
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/*\\\ PUBLIC \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\*/
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template <class T>
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OscSinCos <T>::OscSinCos ()
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: _pos_cos (1)
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, _pos_sin (0)
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, _step_cos (1)
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, _step_sin (0)
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{
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// Nothing
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}
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template <class T>
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void OscSinCos <T>::set_step (double angle_rad)
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{
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using namespace std;
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_step_cos = static_cast <DataType> (cos (angle_rad));
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_step_sin = static_cast <DataType> (sin (angle_rad));
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}
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template <class T>
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typename OscSinCos <T>::DataType OscSinCos <T>::get_cos () const
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{
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return (_pos_cos);
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}
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template <class T>
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typename OscSinCos <T>::DataType OscSinCos <T>::get_sin () const
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{
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return (_pos_sin);
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}
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template <class T>
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void OscSinCos <T>::step ()
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{
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const DataType old_cos = _pos_cos;
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const DataType old_sin = _pos_sin;
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_pos_cos = old_cos * _step_cos - old_sin * _step_sin;
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_pos_sin = old_cos * _step_sin + old_sin * _step_cos;
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}
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template <class T>
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void OscSinCos <T>::clear_buffers ()
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{
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_pos_cos = static_cast <DataType> (1);
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_pos_sin = static_cast <DataType> (0);
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}
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/*\\\ PROTECTED \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\*/
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/*\\\ PRIVATE \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\*/
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} // namespace ffft
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#endif // ffft_OscSinCos_CODEHEADER_INCLUDED
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#undef ffft_OscSinCos_CURRENT_CODEHEADER
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/*\\\ EOF \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\*/
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