diff -r 000000000000 -r 15bf7259bb7c uiaccelerator_plat/alf_core_toolkit_api/inc/uiacceltk/huifixmath.h --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/uiaccelerator_plat/alf_core_toolkit_api/inc/uiacceltk/huifixmath.h Tue Feb 02 07:56:43 2010 +0200 @@ -0,0 +1,65 @@ +/* +* Copyright (c) 2006-2007 Nokia Corporation and/or its subsidiary(-ies). +* All rights reserved. +* This component and the accompanying materials are made available +* under the terms of "Eclipse Public License v1.0" +* which accompanies this distribution, and is available +* at the URL "http://www.eclipse.org/legal/epl-v10.html". +* +* Initial Contributors: +* Nokia Corporation - initial contribution. +* +* Contributors: +* +* Description: Fixed point arithmetics +* +*/ + + + +#ifndef __HUIFIXMATH_H__ +#define __HUIFIXMATH_H__ + +#include + +static const TInt KFixPi = 0x3243F; + + +class HuiFixMath +{ +public: + IMPORT_C static TUint FixHypot(TInt aVal1,TInt aVal2); + IMPORT_C static TInt FixSin(TInt aRadians); + IMPORT_C static TInt FixCos(TInt aRadians); + + static inline TInt FixMul(TInt aVal1, TInt aVal2); + static inline TInt FixDiv(TInt aVal1, TInt aVal2); + static inline TInt FloatToFix(TReal32 aVal); + static inline TReal32 FixToFloat(TInt aVal); +}; + +TInt HuiFixMath::FixMul(TInt aVal1, TInt aVal2) + { + TInt64 result = (TInt64(aVal1))*(TInt64(aVal2)); + return TInt(result>>16); + }; + +TInt HuiFixMath::FixDiv(TInt aVal1, TInt aVal2) + { + TUint64 temp = aVal1; + temp<<=16; + return TInt(temp/aVal2); + }; + +TInt HuiFixMath::FloatToFix(TReal32 aVal) + { + return TInt(aVal*65536.0f); + } + +TReal32 HuiFixMath::FixToFloat(TInt aVal) + { + return TReal32((TReal32(aVal))/65536.0f); + } + + +#endif \ No newline at end of file