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/*****************************************************************************
OscSinCos.hpp
Copyright (c) 2005 Laurent de Soras
--- Legal stuff ---
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*Tab=3***********************************************************************/
#if defined (OscSinCos_CURRENT_CODEHEADER)
#error Recursive inclusion of OscSinCos code header.
#endif
#define OscSinCos_CURRENT_CODEHEADER
#if ! defined (OscSinCos_CODEHEADER_INCLUDED)
#define OscSinCos_CODEHEADER_INCLUDED
/*\\\ INCLUDE FILES \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\*/
#include <cmath>
namespace std { }
/*\\\ PUBLIC \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\*/
template <class T>
OscSinCos <T>::OscSinCos ()
: _pos_cos (1)
, _pos_sin (0)
, _step_cos (1)
, _step_sin (0)
{
// Nothing
}
template <class T>
void OscSinCos <T>::set_step (double angle_rad)
{
using namespace std;
_step_cos = static_cast <DataType> (cos (angle_rad));
_step_sin = static_cast <DataType> (sin (angle_rad));
}
template <class T>
typename OscSinCos <T>::DataType OscSinCos <T>::get_cos () const
{
return (_pos_cos);
}
template <class T>
typename OscSinCos <T>::DataType OscSinCos <T>::get_sin () const
{
return (_pos_sin);
}
template <class T>
void OscSinCos <T>::step ()
{
const DataType old_cos = _pos_cos;
const DataType old_sin = _pos_sin;
_pos_cos = old_cos * _step_cos - old_sin * _step_sin;
_pos_sin = old_cos * _step_sin + old_sin * _step_cos;
}
template <class T>
void OscSinCos <T>::clear_buffers ()
{
_pos_cos = static_cast <DataType> (1);
_pos_sin = static_cast <DataType> (0);
}
/*\\\ PROTECTED \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\*/
/*\\\ PRIVATE \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\*/
#endif // OscSinCos_CODEHEADER_INCLUDED
#undef OscSinCos_CURRENT_CODEHEADER
/*\\\ EOF \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\*/
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