--- /dev/null
+#ifndef _WCTYPE_H_
+#define _WCTYPE_H_
+
+#include <_ansi.h>
+#include <sys/_types.h>
+
+#define __need_wint_t
+#include <stddef.h>
+
+#ifndef WEOF
+# define WEOF ((wint_t)-1)
+#endif
+
+#ifndef _WCTYPE_T
+#define _WCTYPE_T
+typedef int wctype_t;
+#endif
+
+#ifndef _WCTRANS_T
+#define _WCTRANS_T
+typedef int wctrans_t;
+#endif
+
+int _EXFUN(iswalpha, (wint_t));
+int _EXFUN(iswalnum, (wint_t));
+int _EXFUN(iswblank, (wint_t));
+int _EXFUN(iswcntrl, (wint_t));
+int _EXFUN(iswctype, (wint_t, wctype_t));
+int _EXFUN(iswdigit, (wint_t));
+int _EXFUN(iswgraph, (wint_t));
+int _EXFUN(iswlower, (wint_t));
+int _EXFUN(iswprint, (wint_t));
+int _EXFUN(iswpunct, (wint_t));
+int _EXFUN(iswspace, (wint_t));
+int _EXFUN(iswupper, (wint_t));
+int _EXFUN(iswxdigit, (wint_t));
+wint_t _EXFUN(towctrans, (wint_t, wctrans_t));
+wint_t _EXFUN(towupper, (wint_t));
+wint_t _EXFUN(towlower, (wint_t));
+wctrans_t _EXFUN(wctrans, (const char *));
+wctype_t _EXFUN(wctype, (const char *));
+
+#endif /* _WCTYPE_H_ */