table of contents
iswspace(3) | Library Functions Manual | iswspace(3) |
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', '\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¶
POSIX.1-2001, POSIX.1-2008, C99.
NOTES¶
The behavior of iswspace() depends on the LC_CTYPE category of the current locale.
SEE ALSO¶
2023-02-05 | Linux man-pages 6.03 |