1 stdarg_e.h

     1 /*

     2 * Copyright (c) 1997-2009 Nokia Corporation and/or its subsidiary(-ies).

     3 * All rights reserved.

     4 * This component and the accompanying materials are made available

     5 * 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

     6 * which accompanies this distribution, and is available

     7 * at the URL "http://www.symbianfoundation.org/legal/licencesv10.html".

     8 *

     9 * Initial Contributors:

    10 * Nokia Corporation - initial contribution.

    11 *

    12 * Contributors:

    13 *

    14 * Description:

    15 * This is all somewhat tortured because ANSI C says that stdio.h is not supposed 

    16 * to define va_list: it needs to have access to that data type, but must not use that name.

    17 * Instead stdio.h should use an __ name, which is safe because it is reserved for 

    18 * the implementation.  Hence __e32_va_list.

    19 * 

    20 *

    21 */

    22 

    23 

    24 

    25 

    26 

    27 

    28 

    29 /**

    30  @file

    31  @publishedAll

    32  @released

    33 */

    34 

    35 #ifndef _STDARG_E_H

    36 #define _STDARG_E_H

    37 

    38 /**

    39 EPOC32 definitions, extracted from E32DEFS.H

    40 */

    41 typedef char* __e32_va_list;

    42 

    43 #define va_start(ap,pn) (ap=(__e32_va_list)&pn+((sizeof(pn)+sizeof(int)-1)&~(sizeof(int)-1)),(void)0)

    44 #define va_arg(ap,type) (ap+=((sizeof(type)+sizeof(int)-1)&~(sizeof(int)-1)),(*(type *)(ap-((sizeof(type)+sizeof(int)-1)&~(sizeof(int)-1)))))

    45 #define va_end(ap) (ap=0,(void)0)

    46 

    47 #endif