NAME

       iswalpha - test for an alphabetic wide-character code

SYNOPSIS

       #include <wctype.h>

       int iswalpha(wint_t wc);

DESCRIPTION

       The  iswalpha() function shall test whether wc is a wide-character code representing a character of class
       alpha 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.

RETURN VALUE

       The iswalpha() function shall return non-zero if wc is an alphabetic wide-character code;  otherwise,  it
       shall return 0.

ERRORS

       No errors are defined.

       The following sections are informative.

EXAMPLES

       None.

APPLICATION USAGE

       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.

RATIONALE

       None.

FUTURE DIRECTIONS

       None.

SEE ALSO

       iswalnum() , 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>

COPYRIGHT

       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 .

IEEE/The Open Group                                   2003                                           ISWALPHA(P)