Return to varargs.h CVS log

Up to [WindowsNT SDKs] / mstools / h

Annotation of mstools/h/varargs.h, revision 1.1

1.1     ! root        1: /***
        !             2: *varargs.h - XENIX style macros for variable argument functions
        !             3: *
        !             4: *      Copyright (c) 1985-1990, Microsoft Corporation. All rights reserved.
        !             5: *
        !             6: *Purpose:
        !             7: *      This file defines XENIX style macros for accessing arguments of a
        !             8: *      function which takes a variable number of arguments.
        !             9: *      [System V]
        !            10: *
        !            11: ****/
        !            12: 
        !            13: #ifndef _INC_VARARGS
        !            14: 
        !            15: #ifdef __cplusplus
        !            16: extern "C" {
        !            17: #endif
        !            18: 
        !            19: #ifdef __STDC__
        !            20: #error varargs.h incompatible with ANSI (use stdarg.h)
        !            21: #endif
        !            22: 
        !            23: #ifndef _VA_LIST_DEFINED
        !            24: typedef char *va_list;
        !            25: #define _VA_LIST_DEFINED
        !            26: #endif
        !            27: 
        !            28: /*
        !            29:  * define a macro to compute the size of a type, variable or expression,
        !            30:  * rounded up to the nearest multiple of sizeof(int). This number is its
        !            31:  * size as function argument (Intel architecture). Note that the macro
        !            32:  * depends on sizeof(int) being a power of 2!
        !            33:  */
        !            34: 
        !            35: #define _INTSIZEOF(n)   ( (sizeof(n) + sizeof(int) - 1) & ~(sizeof(int) - 1) )
        !            36: 
        !            37: #define va_dcl va_list va_alist;
        !            38: #define va_start(ap) ap = (va_list)&va_alist
        !            39: #define va_arg(ap,t) ( *(t *)((ap += _INTSIZEOF(t)) - _INTSIZEOF(t)) )
        !            40: #define va_end(ap) ap = (va_list)0
        !            41: 
        !            42: #ifdef __cplusplus
        !            43: }
        !            44: #endif
        !            45: 
        !            46: #define _INC_VARARGS
        !            47: #endif /* _INC_VARARGS */

This archive runs on limited infrastructure. Preserving old code on modern bandwidth. Automated agents are requested to crawl responsibly.