PROLOG

       This  manual  page  is part of the POSIX Programmer's Manual.  The Linux implementation of this interface
       may differ (consult the corresponding Linux manual page for details of Linux behavior), or the  interface
       may not be implemented on Linux.

NAME

       iswspace, iswspace_l — test for a white-space wide-character code

SYNOPSIS

       #include <wctype.h>

       int iswspace(wint_t wc);
       int iswspace_l(wint_t wc, locale_t locale);

DESCRIPTION

       For  iswspace():  The  functionality described on this reference page is aligned with the ISO C standard.
       Any conflict between the requirements described here and the ISO C standard is unintentional. This volume
       of POSIX.1‐2008 defers to the ISO C standard.

       The  iswspace()  and iswspace_l() functions shall test whether wc is a wide-character code representing a
       character of class space in the current locale, or in the locale represented by locale, respectively; see
       the Base Definitions volume of POSIX.1‐2008, 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  behavior  is  undefined  if  the  locale  argument  to  iswspace_l()  is  the  special locale object
       LC_GLOBAL_LOCALE or is not a valid locale object handle.

RETURN VALUE

       The iswspace() and iswspace_l() functions shall return non-zero if wc  is  a  white-space  wide-character
       code; otherwise, they 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 these functions and the
       functions in the  reference  pages  listed  in  the  SEE  ALSO  section  should  be  used  for  character
       classification.

RATIONALE

       None.

FUTURE DIRECTIONS

       None.

SEE ALSO

       iswalnum(),   iswalpha(),   iswcntrl(),   iswctype(),  iswdigit(),  iswgraph(),  iswlower(),  iswprint(),
       iswpunct(), iswupper(), iswxdigit(), setlocale(), uselocale()

       The Base Definitions volume of POSIX.1‐2008, Chapter 7, Locale, <locale.h>, <wctype.h>

COPYRIGHT

       Portions of this text are reprinted and reproduced in electronic form from IEEE Std 1003.1, 2013 Edition,
       Standard  for  Information Technology -- Portable Operating System Interface (POSIX), The Open Group Base
       Specifications Issue 7, Copyright (C) 2013 by the Institute of Electrical and Electronics Engineers,  Inc
       and  The  Open Group.  (This is POSIX.1-2008 with the 2013 Technical Corrigendum 1 applied.) 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.unix.org/online.html .

       Any typographical or formatting errors that appear in this page are most likely to have  been  introduced
       during   the   conversion  of  the  source  files  to  man  page  format.  To  report  such  errors,  see
       https://www.kernel.org/doc/man-pages/reporting_bugs.html .