|ISWCTYPE(3)||Library Functions Manual||ISWCTYPE(3)|
The behaviour is undefined if charclass or wc is invalid. When charclass is retrieved with wctype(3), it becomes invalid when the thread-specific character encoding locale is changed with uselocale(3) or when the global character encoding locale is changed with setlocale(3). When charclass is retrieved with wctype_l(3), it is only valid for use with the same locale argument.
iswctype() function conforms to ISO/IEC 9899/AMD1:1995 (“ISO C90, Amendment 1”), and
iswctype_l() to IEEE Std 1003.1-2008 (“POSIX.1”).
iswctype() function has been available since OpenBSD 3.8, and
iswctype_l() since OpenBSD 6.2.
|September 5, 2017||OpenBSD-current|