File: cpuinfo.h

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    /*

    Copyright (C) 2001 Malte Starostik <malte@kde.org>

    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Library General Public
    License as published by the Free Software Foundation; either
    version 2 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
    Library General Public License for more details.
   
    You should have received a copy of the GNU Library General Public License
    along with this library; see the file COPYING.LIB.  If not, write to
    the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
    Boston, MA 02111-1307, USA.

    */

#ifndef _arts_cpuinfo_h
#define _arts_cpuinfo_h

#include "arts_export.h"
/*
 * BC - Status (2002-03-08): CpuInfo
 *
 * This class will be kept binary compatible - it just exports the static
 * CpuInfo::flags() function as only functionality.
 */

namespace Arts {

	/**
	 * Provides information about the availability of the various
	 * "Multimedia extensions" the CPU supports. If you implement
	 * a routine in assembler, use @ref flags() to know which
	 * SIMD instructions the user's CPU knows about.
	 *
	 * @short Information about the CPU's SIMD implementation
	 */
	class ARTS_EXPORT CpuInfo
	{
	public:
		/**
		 * Values for the detected features of the CPU:
		 * @li CpuMMX - CPU supports MMX
		 * @li CpuEMMX - CPU supports Cyrix Extended MMX
		 * @li Cpu3DNow - CPU supports AMD 3DNow!
		 * @li CpuSSE - CPU supports Intel SSE
		 */
		enum Flags
		{
			CpuMMX   = 0x001, // Pentium MMX
			CpuEMMX  = 0x002, // Cyrix Extended MMX
			Cpu3DNow = 0x004, // AMD 3DNow!
			CpuSSE   = 0x008  // Pentium III SSE
		};
		/**
		 * @return the @ref Flags values that correspond to the
		 * CPU's features. Multiple values are bitwised or'ed
		 */
		static int flags() { return s_flags; }
	
	private:
		friend class CpuInfoStartup;
		static int s_flags;
	};
}

#endif // _arts_cpuinfo_h