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Command: iswctype | Section: 3 | Source: OpenBSD | File: iswctype.3
ISWCTYPE(3) FreeBSD Library Functions Manual ISWCTYPE(3)
NAME
iswctype, iswctype_l - test whether a wide character belongs to a
character class
SYNOPSIS
#include <wctype.h>
int
iswctype(wint_t wc, wctype_t charclass);
int
iswctype_l(wint_t wc, wctype_t charclass, locale_t locale);
DESCRIPTION
These functions test whether the wide character wc belongs to charclass.
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.
RETURN VALUES
These functions return zero if the character tests false or non-zero if
the character tests true.
SEE ALSO
iswalnum(3), newlocale(3), setlocale(3), towctrans(3), wctype(3)
STANDARDS
The iswctype() function conforms to ISO/IEC 9899/AMD1:1995 ("ISO C90,
Amendment 1"), and iswctype_l() to IEEE Std 1003.1-2008 ("POSIX.1").
HISTORY
The iswctype() function has been available since OpenBSD 3.8, and
iswctype_l() since OpenBSD 6.2.
FreeBSD 14.1-RELEASE-p8 September 5, 2017 FreeBSD 14.1-RELEASE-p8