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63 lines
1.6 KiB
C++
63 lines
1.6 KiB
C++
////////////////////////////////////////////////////////////////////////////////////////
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//
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// Nestopia - NES/Famicom emulator written in C++
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//
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// Copyright (C) 2003-2008 Martin Freij
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//
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// This file is part of Nestopia.
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//
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// Nestopia 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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// Nestopia 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 Nestopia; 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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////////////////////////////////////////////////////////////////////////////////////////
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#ifndef NST_FPUPRECISION_H
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#define NST_FPUPRECISION_H
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#include <cfloat>
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#ifdef NST_PRAGMA_ONCE
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#pragma once
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#endif
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namespace Nes
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{
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namespace Core
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{
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class FpuPrecision
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{
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#if defined(NST_WIN32) && defined(_MCW_PC) && defined(_PC_24) && defined(_PC_53)
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const uint ctrl;
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public:
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FpuPrecision()
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: ctrl(::_controlfp( 0, 0 ) & _MCW_PC)
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{
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if (ctrl == _PC_24)
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::_controlfp( _PC_53, _MCW_PC );
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}
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~FpuPrecision()
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{
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if (ctrl == _PC_24)
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::_controlfp( _PC_24, _MCW_PC );
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}
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#endif
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};
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}
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}
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#endif
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