Description

   The vswscanf function is equivalent to the swscanf function,
   except that instead of being called with a variable number of
   arguments, it is called with an argument list (ap) that has been
   initialized by va_start (and possibly with subsequent va_arg
   calls).

   The vswscanf function is also equivalent to the vfwscanf
   function, except that the first argument specifies a wide-
   character string rather than a stream. Reaching the end of the
   wide-character string is the same as encountering EOF for the
   vfwscanf function.

   For more information about format and conversion specifications
   and their corresponding arguments, see the "Understanding Input
   and Output" chapter of the VSI C RTL Reference Manual.

   See also vfwscanf and swscanf.