ISWSPACE(3)                                                             Linux Programmer's Manual                                                            ISWSPACE(3)

NAME
       iswspace - test for whitespace wide character

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', '\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 │
       └───────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────┴───────────────┴────────────────┘

CONFORMING TO
       POSIX.1-2001, POSIX.1-2008, C99.

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

SEE ALSO
       isspace(3), iswctype(3)

GNU                                                                            2021-03-22                                                                    ISWSPACE(3)