diff -r c55016431358 -r 0a7b44b10206 symport/e32/euser/maths/um_spec.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/symport/e32/euser/maths/um_spec.cpp	Thu Jun 25 15:59:54 2009 +0100
@@ -0,0 +1,159 @@
+// 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 "Symbian Foundation License v1.0"
+// which accompanies this distribution, and is available
+// at the URL "http://www.symbianfoundation.org/legal/sfl-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==0U && pS->lsm==0U && pS->exp==(unsigned)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==(unsigned)KTReal64SpecialExponent && (pS->msm|pS->lsm)!= 0U)
+		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==0U && pS->lsm==0U && pS->exp==(unsigned)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!=(unsigned)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
+