NAME¶
iswxdigit - test for hexadecimal digit wide character
SYNOPSIS¶
#include <wctype.h>
int iswxdigit(wint_t wc);
DESCRIPTION¶
The
iswxdigit() function is the wide-character equivalent of the
isxdigit(3) function. It tests whether
wc is a wide character
belonging to the wide-character class "xdigit".
The wide-character class "xdigit" is a subclass of the wide-character
class "alnum", and therefore also a subclass of the wide-character
class "graph" and of the wide-character class "print".
Being a subclass of the wide-character class "print", the
wide-character class "xdigit" is disjoint from the wide-character
class "cntrl".
Being a subclass of the wide-character class "graph", the
wide-character class "xdigit" is disjoint from the wide-character
class "space" and its subclass "blank".
Being a subclass of the wide-character class "alnum", the
wide-character class "xdigit" is disjoint from the wide-character
class "punct".
The wide-character class "xdigit" always contains at least the letters
'A' to 'F', 'a' to 'f' and the digits '0' to '9'.
RETURN VALUE¶
The
iswxdigit() function returns nonzero if
wc is a wide character
belonging to the wide-character class "xdigit". Otherwise, it
returns zero.
ATTRIBUTES¶
For an explanation of the terms used in this section, see
attributes(7).
Interface |
Attribute |
Value |
iswxdigit () |
Thread safety |
MT-Safe locale |
POSIX.1-2001, POSIX.1-2008, C99.
NOTES¶
The behavior of
iswxdigit() depends on the
LC_CTYPE category of
the current locale.
SEE ALSO¶
iswctype(3),
isxdigit(3)
COLOPHON¶
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version of this page, can be found at
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