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stdarg.ch

Declarations

Public Only
Publicfunction va_start
func va_start(ap : va_list, parmN : any) : void
The va_start macro enables access to the variable arguments following the named argument parmN(until C23). va_start shall be invoked with an instance to a valid va_list object ap before any calls to va_arg. Only the first argument passed to va_start is evaluated. Any additional arguments are neither expanded nor used in any way.

Parameters

  • ap - an instance of the va_list type @param parmN - the named parameter preceding the first variable parameter @see https:en.cppreference.com/w/c/variadic/va_start
  • parmN - the named parameter preceding the first variable parameter @see https:en.cppreference.com/w/c/variadic/va_start

See Also

  • https:en.cppreference.com/w/c/variadic/va_start
Publicfunction va_copy
func va_copy(dest : va_list, src : va_list) : void
The va_copy macro copies src to dest. va_end should be called on dest before the function returns or any subsequent re-initialization of dest (via calls to va_start or va_copy).

Parameters

  • dest - an instance of the va_list type to initialize @param src - the source va_list that will be used to initialize dest @see https:en.cppreference.com/w/c/variadic/va_copy
  • src - the source va_list that will be used to initialize dest @see https:en.cppreference.com/w/c/variadic/va_copy

See Also

  • https:en.cppreference.com/w/c/variadic/va_copy
Publicfunction va_end
func va_end(ap : va_list) : void
The va_end macro performs cleanup for an ap object initialized by a call to va_start or va_copy. va_end may modify ap so that it is no longer usable. If there is no corresponding call to va_start or va_copy, or if va_end is not called before a function that calls va_start or va_copy returns, the behavior is undefined.

Parameters

  • ap - an instance of the va_list type to clean up