NAME

       iswspace - test for whitespace wide character

LIBRARY

       Standard C library (libc, -lc)

SYNOPSIS

       #include <wctype.h>

       int iswspace(wint_t wc);

DESCRIPTION

       The  iswspace()  function is the wide-character equivalent of the isspace(3) function.  It
       tests whether wc is a wide character belonging to the wide-character class "space".

       The wide-character class "space" is disjoint from the  wide-character  class  "graph"  and
       therefore  also  disjoint from its subclasses "alnum", "alpha", "upper", "lower", "digit",
       "xdigit", "punct".

       The wide-character class "space" contains the wide-character class "blank".

       The wide-character class "space" always contains at least  the  space  character  and  the
       control characters '\f', '\n', '\r', '\t', and '\v'.

RETURN VALUE

       The  iswspace()  function returns nonzero if wc is a wide character belonging to the wide-
       character class "space".  Otherwise, it returns zero.

ATTRIBUTES

       For an explanation of the terms used in this section, see attributes(7).

       ┌────────────────────────────────────────────────────────┬───────────────┬────────────────┐
       │Interface                                               │ Attribute     │ Value          │
       ├────────────────────────────────────────────────────────┼───────────────┼────────────────┤
       │iswspace()                                              │ Thread safety │ MT-Safe locale │
       └────────────────────────────────────────────────────────┴───────────────┴────────────────┘

STANDARDS

       C11, POSIX.1-2008.

HISTORY

       POSIX.1-2001, C99.

NOTES

       The behavior of iswspace() depends on the LC_CTYPE category of the current locale.

SEE ALSO

       isspace(3), iswctype(3)