Arguments

 

dst

   A pointer to the destination array containing the resulting
   sequence of wide-character codes.
 

src

   An address of the pointer to an array containing a sequence of
   multibyte characters to be converted.
 

len

   The maximum number of wide character codes that can be stored in
   the array pointed to by dst.
 

ps

   A pointer to the mbstate_t object. If a NULL pointer is
   specified, the function uses its internal mbstate_t object.
   mbstate_t is an opaque datatype intended to keep the conversion
   state for the state-dependent codesets.