kernel/eka/euser/maths/um_std.h
author Mike Kinghan <mikek@symbian.org>
Tue, 16 Nov 2010 14:39:21 +0000
branchGCC_SURGE
changeset 303 9b85206a602c
parent 0 a41df078684a
permissions -rw-r--r--
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) 1995-2009 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_std.h
// 
//

#include <e32std.h>
#include <e32math.h>
#include <u32exec.h>

struct SReal32
    {
    unsigned man:23;
    unsigned exp:8;
    unsigned sign:1;
    };

#if defined(__DOUBLE_WORDS_SWAPPED__)
struct SReal64
    {
    unsigned msm:20;
    unsigned exp:11;
    unsigned sign:1;
    TUint lsm;
    };
#define DVAL(m0,m1,m2,m3,e)     {(TUint)((m0<<16)|m1),e+KExponentBias,0,(TUint)((m2<<16)|m3)}
#else
struct SReal64
    {
    TUint lsm;
    unsigned msm:20;
    unsigned exp:11;
    unsigned sign:1;
    };
#define DVAL(m0,m1,m2,m3,e)     {(TUint)((m2<<16)|m3),(TUint)((m0<<16)|m1),e+KExponentBias,0}
#endif

enum TMathPanic
    {
	EMathDivideByZero,
	EMathOverflow,
	EMathUnderflow,
	EMathBadOperand,
    EMathUnknownError,
	EMathUnexpectedError1
    };

GLREF_C void Panic(TMathPanic aPanic);