NAME
iswctype
—
test a character for character class
identifier
LIBRARY
library “libc”
SYNOPSIS
#include
<wctype.h>
int
iswctype
(wint_t
wc, wctype_t
charclass);
DESCRIPTION
Theiswctype
()
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
STANDARDS
The iswctype
() function conforms to
ISO/IEC 9899/AMD1:1995 (“ISO C90, Amendment
1”).