TODO: Implementation-defined errno setting for ftell().
*/
long int ftell( FILE * stream ) _PDCLIB_nothrow;
+_PDCLIB_uint_fast64_t _PDCLIB_ftell64( FILE * stream ) _PDCLIB_nothrow;
/* Equivalent to (void)fseek( stream, 0L, SEEK_SET ), except that the error
indicator for the stream is also cleared.