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$FreeBSD: releng/11.0/lib/libc/locale/wctype.3 163314 2006-10-13 16:11:12Z ru $
.Dd March 27, 2004 .Dt WCTYPE 3 .Os .Sh NAME .Nm iswctype , wctype .Nd "wide character class functions" .Sh LIBRARY .Lb libc .Sh SYNOPSIS n wctype.h .Ft int .Fn iswctype "wint_t wc" "wctype_t charclass" .Ft wctype_t .Fn wctype "const char *property" .Sh DESCRIPTION The .Fn wctype function returns a value of type .Vt wctype_t which represents the requested wide character class and may be used as the second argument for calls to .Fn iswctype .
p The following character class names are recognised: l -column -offset indent ".Li alnum" ".Li cntrl" ".Li ideogram" ".Li print" ".Li space" t Li "alnum cntrl ideogram print space xdigit" t Li "alpha digit lower punct special" t Li "blank graph phonogram rune upper" .El
p The .Fn iswctype function checks whether the wide character .Fa wc is in the character class .Fa charclass . .Sh RETURN VALUES The .Fn iswctype function returns non-zero if and only if .Fa wc has the property described by .Fa charclass , or .Fa charclass is zero.
p The .Fn wctype function returns 0 if .Fa property is invalid, otherwise it returns a value of type .Vt wctype_t that can be used in subsequent calls to .Fn iswctype . .Sh EXAMPLES Reimplement .Xr iswalpha 3 in terms of .Fn iswctype and .Fn wctype : d -literal -offset indent int myiswalpha(wint_t wc) { return (iswctype(wc, wctype("alpha"))); } .Ed .Sh SEE ALSO .Xr ctype 3 , .Xr nextwctype 3 .Sh STANDARDS The .Fn iswctype and .Fn wctype functions conform to .St -p1003.1-2001 . The .Dq Li ideogram , .Dq Li phonogram , .Dq Li special , and .Dq Li rune character classes are extensions. .Sh HISTORY The .Fn iswctype and .Fn wctype functions first appeared in .Fx 5.0 .