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 .