We need a way to pass flags to rombuilds in Raptor via extension flm interfaces, so that the CPP pass
of the rom input files can be informed what toolchain we are building with and conditionally
include or exclude files depending on whether the toolchain could build them.
// Copyright (c) 1997-2009 Nokia Corporation and/or its subsidiary(-ies).
// All rights reserved.
// This component and the accompanying materials are made available
// under the terms of the License "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:
// e32\euser\maths\um_spec.cpp
// Functions to check for and set special values
//
//
#include "um_std.h"
#ifndef __REALS_MACHINE_CODED__
EXPORT_C TBool Math::IsZero(const TReal &aVal)
/**
Determines whether a value is zero.
@param aVal A reference to the value to be checked.
@return True, if aVal is zero; false, otherwise.
*/
{
SReal64 *pS=(SReal64 *)&aVal;
if (pS->msm==0 && pS->lsm==0 && pS->exp==KTReal64ZeroExponent)
return TRUE;
else
return FALSE;
}
EXPORT_C TBool Math::IsNaN(const TReal &aVal)
/**
Determines whether a value is not a number.
@param aVal A reference to the value to be checked.
@return True, if aVal is not a number; false, otherwise.
*/
{
SReal64 *pS=(SReal64 *)&aVal;
if (pS->exp==KTReal64SpecialExponent && (pS->msm|pS->lsm)!=0)
return TRUE;
else
return FALSE;
}
EXPORT_C TBool Math::IsInfinite(const TReal &aVal)
/**
Determines whether a value is infinite.
@param aVal A reference to the value to be checked.
@return True, if aVal is infinite; false, otherwise.
*/
{
SReal64 *pS=(SReal64 *)&aVal;
if (pS->msm==0 && pS->lsm==0 && pS->exp==KTReal64SpecialExponent)
return TRUE;
else
return FALSE;
}
EXPORT_C TBool Math::IsFinite(const TReal &aVal)
/**
Determines whether a value is finite.
In this context, a value is finite if it is a valid number and
is not infinite.
@param aVal A reference to the value to be checked.
@return True, if aVal is finite; false, otherwise.
*/
{
SReal64 *pS=(SReal64 *)&aVal;
if (pS->exp!=KTReal64SpecialExponent)
return TRUE;
else
return FALSE;
}
EXPORT_C void Math::SetZero(TReal &aVal,TInt aSign)
//
// Constructs zeros, assuming default sign is positive
//
{
SReal64 *pS=(SReal64 *)&aVal;
pS->sign=aSign;
pS->exp=KTReal64ZeroExponent;
pS->msm=0;
pS->lsm=0;
}
EXPORT_C void Math::SetNaN(TReal &aVal)
//
// Constructs NaN (+ve sign for Java)
//
{
SReal64 *pS=(SReal64 *)&aVal;
pS->sign=0;
pS->exp=KTReal64SpecialExponent;
pS->msm=0xfffffu;
pS->lsm=0xffffffffu;
}
EXPORT_C void Math::SetInfinite(TReal &aVal,TInt aSign)
//
// Constructs infinities
//
{
SReal64 *pS=(SReal64 *)&aVal;
pS->sign=aSign;
pS->exp=KTReal64SpecialExponent;
pS->msm=0;
pS->lsm=0;
}
#endif