qt-everywhere-src-5.14.1/qtmultimedia/examples/multimedia/spectrum/3rdparty/fftreal/OscSinCos.h

/*****************************************************************************

        OscSinCos.h
        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_HEADER_INCLUDED)
#define	OscSinCos_HEADER_INCLUDED

#if defined (_MSC_VER)
	#pragma once
	#pragma warning (4 : 4250) // "Inherits via dominance."
#endif



/*\\\ INCLUDE FILES \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\*/

#include	"def.h"



template <class T>
class OscSinCos
{

/*\\\ PUBLIC \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\*/

public:

	typedef	T	DataType;

						OscSinCos ();

	FORCEINLINE void
						set_step (double angle_rad);

	FORCEINLINE DataType
						get_cos () const;
	FORCEINLINE DataType
						get_sin () const;
	FORCEINLINE void
						step ();
	FORCEINLINE void
						clear_buffers ();



/*\\\ PROTECTED \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\*/

protected:



/*\\\ PRIVATE \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\*/

private:

	DataType			_pos_cos;		// Current phase expressed with sin and cos. [-1 ; 1]
	DataType			_pos_sin;		// -
	DataType			_step_cos;		// Phase increment per step, [-1 ; 1]
	DataType			_step_sin;		// -



/*\\\ FORBIDDEN MEMBER FUNCTIONS \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\*/

private:

						OscSinCos (const OscSinCos &other);
	OscSinCos &		operator = (const OscSinCos &other);
	bool				operator == (const OscSinCos &other);
	bool				operator != (const OscSinCos &other);

};	// class OscSinCos



#include	"OscSinCos.hpp"



#endif	// OscSinCos_HEADER_INCLUDED



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