eliminate the && through constant folding."
Solaris defines some of these symbols so we must undefine them first. */
-#if defined STDC_HEADERS || (!defined isascii && !defined HAVE_ISASCII)
+#if STDC_HEADERS || (!defined (isascii) && !HAVE_ISASCII)
# define IN_CTYPE_DOMAIN(c) 1
#else
# define IN_CTYPE_DOMAIN(c) isascii(c)