# define istalpha iswalpha
# define istspace iswspace
# define tstrcmp wcscmp
+# define tstrncmp wcsncmp
# define tstrchr wcschr
# define tstrpbrk wcspbrk
# define tstrrchr wcsrchr
# define istalpha isalpha
# define istspace isspace
# define tstrcmp strcmp
+# define tstrncmp strncmp
# define tstrchr strchr
# define tstrpbrk strpbrk
# define tstrrchr strrchr