NAME
iswctype —
test a character for
character class identifier
LIBRARY
Standard C Library (libc, -lc)
SYNOPSIS
#include <wctype.h>
int
iswctype(
wint_t
wc,
wctype_t
charclass);
DESCRIPTION
The
iswctype() 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.
RETURN VALUES
The
iswctype() returns:
-
-
- 0
- wc is not in
charclass.
-
-
- non-zero
- wc is in
charclass.
ERRORS
No errors are defined.
SEE ALSO
setlocale(3),
towctrans(3),
wctrans(3),
wctype(3)
STANDARDS
The
iswctype() function conforms to
ISO/IEC
9899/AMD1:1995 (“ISO C90, Amendment 1”).