genericopenlibs/openenvcore/libc/inc/stdarg_e.h
author Peter Fordham <peter.fordham@gmail.com>
Mon, 22 Mar 2010 12:57:04 -0700
branchCompilerCompatibility
changeset 13 ef48f5dc1b7f
parent 0 e4d67989cc36
permissions -rw-r--r--
Bug 1713 - You can't check the existence of a typedef using the preprocessor. Added a preprocessor check. Also removed an overqualified method name.

/*
* 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 "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:
* This is all somewhat tortured because ANSI C says that stdio.h is not supposed 
* to define va_list: it needs to have access to that data type, but must not use that name.
* Instead stdio.h should use an __ name, which is safe because it is reserved for 
* the implementation.  Hence __e32_va_list.
* 
*
*/



#ifndef _STDARG_E_H
#define _STDARG_E_H

/**
EPOC32 definitions, extracted from E32DEFS.H
*/
typedef char* __e32_va_list;

#define va_start(ap,pn) (ap=(__e32_va_list)&pn+((sizeof(pn)+sizeof(int)-1)&~(sizeof(int)-1)),(void)0)
#define va_arg(ap,type) (ap+=((sizeof(type)+sizeof(int)-1)&~(sizeof(int)-1)),(*(type *)(ap-((sizeof(type)+sizeof(int)-1)&~(sizeof(int)-1)))))
#define va_end(ap) (ap=0,(void)0)

#endif