iswspace - Man Page
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.