int
iswctype(
wint_t wc
, wctype_t charclass
)
)
function returns a boolean value that indicates whether a wide character
wc
is in
charclass
.
The behaviour of
iswctype()
is undefined if the
iswctype(
)
function is called with an invalid
charclass
(changes of
LC_CTYPE
category invalidate
charclass
)
or invalid wide character
wc
.
The behaviour of
iswctype()
is affected by the
LC_CTYPE
category of the current locale.
)
returns:
wc
is not in
charclass
.
wc
is in
charclass
.
)
function conforms to
ISO/IEC 9899/AMD1:1990 (``ISO C90'') .