iswspace man page

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).

InterfaceAttributeValue
iswspace()Thread safetyMT-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)

Colophon

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Referenced By

isalpha(3), iswctype(3).

2015-08-08 GNU Linux Programmer's Manual