/*
* 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 <e32def.h>
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