Arguments

 

dst

   A pointer to the destination array for converted multibyte
   character sequence.
 

src

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

len

   The maximum number of bytes 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.