ISWCTYPE(3) Linux Programmers Manual ISWCTYPE(3)
iswctype - wide-character classification
int iswctype(wint_t wc, wctype_t desc);
If wc is a wide character having the character property designated by
desc (or in other words: belongs to the character class designated by
desc), the iswctype() function returns non-zero. Otherwise it returns
zero. If wc is WEOF, zero is returned.
desc must be a character property descriptor returned by the wctype()
The iswctype() function returns non-zero if the wc has the designated
property. Otherwise it returns 0.
The behavior of iswctype() depends on the LC_CTYPE category of the cur
iswalnum(3), iswalpha(3), iswblank(3), iswcntrl(3), iswdigit(3), isw
graph(3), iswlower(3), iswprint(3), iswpunct(3), iswspace(3), iswup
per(3), iswxdigit(3), wctype(3)
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be found at http://www.kernel.org/doc/man-pages/.
GNU 1999-07-25 ISWCTYPE(3)