iswalnum3
Wide character classification utilities
Usage
#include <wctype.h>
int
iswalnum(wint_t wc);
int
iswalpha(wint_t wc);
int
iswascii(wint_t wc);
int
iswblank(wint_t wc);
int
iswcntrl(wint_t wc);
int
iswdigit(wint_t wc);
int
iswgraph(wint_t wc);
int
iswhexnumber(wint_t wc);
int
iswideogram(wint_t wc);
int
iswlower(wint_t wc);
int
iswnumber(wint_t wc);
int
iswphonogram(wint_t wc);
int
iswprint(wint_t wc);
int
iswpunct(wint_t wc);
int
iswrune(wint_t wc);
int
iswspace(wint_t wc);
int
iswspecial(wint_t wc);
int
iswupper(wint_t wc);
int
iswxdigit(wint_t wc);
Library
Standard C Library (libc, -lc)
Overview
The above functions are character classification utility functions, for use with wide characters (wchar_t or wint_t). See the description for the similarly-named single byte classification functions (such as isalnum(3)), for details.
Extended locale versions of these functions are documented in iswalnum_l(3). See xlocale(3) for more information.
Return values
The functions return zero if the character tests false and return non-zero if the character tests true.
Caveats
The result of these functions is undefined unless the argument is WEOF or a valid wchar_t value for the current locale.
Releases
145 releases since Mac OS X 10.3; the text changed 2 times.