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stdarg.h 881 B

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  1. /*
  2. * This file is part of the UCB release of Plan 9. It is subject to the license
  3. * terms in the LICENSE file found in the top-level directory of this
  4. * distribution and at http://akaros.cs.berkeley.edu/files/Plan9License. No
  5. * part of the UCB release of Plan 9, including this file, may be copied,
  6. * modified, propagated, or distributed except according to the terms contained
  7. * in the LICENSE file.
  8. */
  9. #ifndef __STDARG
  10. #define __STDARG
  11. typedef char *va_list;
  12. #define va_start(list, start) list =\
  13. (sizeof(start) < 4?\
  14. (char*)((int*)&(start)+1):\
  15. (char*)(&(start)+1))
  16. #define va_end(list)
  17. #define va_arg(list, mode)\
  18. ((sizeof(mode) <= 4)?\
  19. ((list += 4), (mode*)list)[-1]:\
  20. (signof(mode) != signof(double))?\
  21. ((list += sizeof(mode)), (mode*)list)[-1]:\
  22. ((list = (char*)((unsigned long)(list+7) & ~7) + sizeof(mode)), (mode*)list)[-1])
  23. #endif /* __STDARG */