Originální popis anglicky:
iswalnum - test for an alphanumeric wide-character code
Návod, kniha: POSIX Programmer's Manual
#include <wctype.h>
int iswalnum(wint_t
wc);
The
iswalnum() function shall test whether
wc is a wide-character
code representing a character of class
alpha or
digit in the
program's current locale; see the Base Definitions volume of
IEEE Std 1003.1-2001, Chapter 7, Locale.
The
wc argument is a
wint_t, the value of which the application
shall ensure is a wide-character code corresponding to a valid character in
the current locale, or equal to the value of the macro WEOF. If the argument
has any other value, the behavior is undefined.
The
iswalnum() function shall return non-zero if
wc is an
alphanumeric wide-character code; otherwise, it shall return 0.
No errors are defined.
The following sections are informative.
None.
To ensure applications portability, especially across natural languages, only
this function and those listed in the SEE ALSO section should be used for
classification of wide-character codes.
None.
None.
iswalpha() ,
iswcntrl() ,
iswctype() ,
iswdigit() ,
iswgraph() ,
iswlower() ,
iswprint() ,
iswpunct()
,
iswspace() ,
iswupper() ,
iswxdigit() ,
setlocale() , the Base Definitions volume of
IEEE Std 1003.1-2001, Chapter 7, Locale,
<stdio.h>,
<wchar.h>,
<wctype.h>
Portions of this text are reprinted and reproduced in electronic form from IEEE
Std 1003.1, 2003 Edition, Standard for Information Technology -- Portable
Operating System Interface (POSIX), The Open Group Base Specifications Issue
6, Copyright (C) 2001-2003 by the Institute of Electrical and Electronics
Engineers, Inc and The Open Group. In the event of any discrepancy between
this version and the original IEEE and The Open Group Standard, the original
IEEE and The Open Group Standard is the referee document. The original
Standard can be obtained online at http://www.opengroup.org/unix/online.html
.
