epoc32/include/libc/stdarg_e.h
author William Roberts <williamr@symbian.org>
Tue, 16 Mar 2010 16:12:26 +0000
branchSymbian2
changeset 2 2fe1408b6811
parent 0 061f57f2323e
child 4 837f303aceeb
permissions -rw-r--r--
Final list of Symbian^2 public API header files

/*
* 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" to Symbian Foundation members and "Symbian Foundation End User License Agreement v1.0" to non-members
* which accompanies this distribution, and is available
* at the URL "http://www.symbianfoundation.org/legal/licencesv10.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.
* 
*
*/







/**
 @file
 @publishedAll
 @released
*/

#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