/* Check that the isw* functions exist as functions or as macros. */
(void) iswalnum (0);
(void) iswalpha (0);
-#if 0 /* not portable: missing on mingw */
(void) iswblank (0);
-#endif
(void) iswcntrl (0);
(void) iswdigit (0);
(void) iswgraph (0);
/* Check that the isw* functions map WEOF to 0. */
ASSERT (!iswalnum (e));
ASSERT (!iswalpha (e));
-#if 0 /* not portable: missing on mingw */
ASSERT (!iswblank (e));
-#endif
ASSERT (!iswcntrl (e));
ASSERT (!iswdigit (e));
ASSERT (!iswgraph (e));