ISWCTYPE(3) |
Library Functions Manual |
ISWCTYPE(3) |
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.
STANDARDS
The iswctype() function conforms to ISO/IEC 9899/AMD1:1995 (“ISO C90, Amendment 1”).