2012-05-29 13:31:11 +00:00
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// NeL - MMORPG Framework <http://dev.ryzom.com/projects/nel/>
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// Copyright (C) 2010 Winch Gate Property Limited
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as
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// published by the Free Software Foundation, either version 3 of the
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// License, or (at your option) any later version.
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//
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// This program 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 Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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#include "stdmisc.h"
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#ifdef NL_OS_WINDOWS
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#include "nel/misc/check_fpu.h"
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#include "nel/misc/fast_floor.h"
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#pragma optimize("", off )
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2016-12-04 14:14:10 +00:00
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#ifdef DEBUG_NEW
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#define new DEBUG_NEW
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#endif
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2012-05-29 13:31:11 +00:00
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namespace NLMISC
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{
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int CFpuChecker::_RefFpuCtrl= 0x00090013;
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CFpuChecker::CFpuChecker()
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{
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check();
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}
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CFpuChecker::~CFpuChecker()
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{
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check();
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}
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void CFpuChecker::dumpFpu(int value)
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{
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nlwarning("_MCW_DN = %s", value & _MCW_DN ? "_DN_FLUSH" : "_DN_SAVE");
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nlwarning("_MCW_EM = %x", _MCW_EM);
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switch(value & _MCW_EM)
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{
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case _EM_INVALID: nlwarning("_EM_INVALID"); break;
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case _EM_DENORMAL: nlwarning("_EM_DENORMAL"); break;
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case _EM_ZERODIVIDE: nlwarning("_EM_ZERODIVIDE"); break;
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case _EM_OVERFLOW: nlwarning("_EM_OVERFLOW"); break;
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case _EM_UNDERFLOW: nlwarning("_EM_UNDERFLOW"); break;
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case _EM_INEXACT: nlwarning("_EM_INEXACT"); break;
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default:
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nlwarning("_MCW_EM = %x", value & _MCW_EM);
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break;
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}
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nlwarning("_MCW_IC = %s", value & _MCW_IC ? "_IC_AFFINE" : "_IC_PROJECTIVE");
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switch(value & _MCW_RC)
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{
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case _RC_CHOP: nlwarning("_RC_CHOP"); break;
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case _RC_UP: nlwarning("_RC_UP"); ; break;
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case _RC_DOWN: nlwarning("_RC_DOWN"); break;
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case _RC_NEAR: nlwarning("_RC_NEAR"); break;
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}
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switch(value & _MCW_PC)
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{
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case _PC_24: nlwarning("_PC_24"); break;
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case _PC_53: nlwarning("_PC_53"); ; break;
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case _PC_64: nlwarning("_PC_64"); break;
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}
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}
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void CFpuChecker::check()
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{
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#if defined(NL_OS_WINDOWS) && defined(NL_COMP_VC6)
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// don't Check if in a user control state
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if (NLMISC::OptFastFloorCWStackPtr != NLMISC::OptFastFloorCWStack) return;
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// check standard control state
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volatile int cfp = _controlfp(0, 0);
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if ((cfp & ~_MCW_EM) != (_RefFpuCtrl & ~_MCW_EM))
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{
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nlwarning("Ref = ");
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nlwarning("=========================");
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dumpFpu(_RefFpuCtrl);
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nlwarning("Current = ");
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nlwarning("=========================");
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dumpFpu(cfp);
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nlassert(0);
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}
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#endif
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}
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}
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#endif // NL_OS_WINDOWS
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