+wint_t ungetwc(wint_t c, _PDCLIB_file_t *stream);\r
+\r
+#if _PDCLIB_GNU_SOURCE\r
+wint_t getwc_unlocked(_PDCLIB_file_t *stream);\r
+wint_t getwchar_unlocked(void);\r
+wint_t fgetwc_unlocked(_PDCLIB_file_t *stream);\r
+wint_t fputwc_unlocked(wchar_t wc, _PDCLIB_file_t *stream);\r
+wint_t putwc_unlocked(wchar_t wc, _PDCLIB_file_t *stream);\r
+wint_t putwchar_unlocked(wchar_t wc);\r
+wchar_t *fgetws_unlocked(wchar_t *ws, int n, _PDCLIB_file_t *stream);\r
+int fputws_unlocked(const wchar_t *ws, _PDCLIB_file_t *stream);\r
+#endif\r