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iswspace - Test for white-space wide character

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Definition

#include <wctype.h>

int iswspace(wint_t wc);

iswspace tests whether wc is a white-space wide character. White-space wide characters
include: blanks, horizontal tabs, carriage returns, newlines, form-feeds, and vertical tabs.

In all cases, wc is an argument of type wint_t, the value of which must be a wide character
code corresponding to a valid character in the current locale or must equal the value of the
macro WEOF. If the argument wc has any other value, the behavior is undefined.

Return val.

!= 0

0

wc is a white-space wide character.

wc is not a white-space wide character.

Notes

This version of the C runtime system only supports one-byte characters as wide character
codes.

iswspace is implemented both as a function and as a macro (see section “Functions and macros”).

The behavior of iswspace is determined by the class space of the current locale. The
current locale is the C locale, unless it was explicitly changed using setlocale.

See also

isspace, iswalnum, iswalpha, iswcntrl, iswdigit, iswgraph, iswlower, iswprint, iswpunct,
iswupper, iswxdigit, setlocale