iswspace(3)

1iswspace(3)                Library Functions Manual                iswspace(3)
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NAME

6       iswspace - test for whitespace wide character
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LIBRARY

9       Standard C library (libc, -lc)
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SYNOPSIS

12       #include <wctype.h>
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14       int iswspace(wint_t wc);
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DESCRIPTION

17       The  iswspace()  function  is the wide-character equivalent of the iss‐
18       pace(3) function.  It tests whether wc is a wide character belonging to
19       the wide-character class "space".
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21       The  wide-character  class  "space" is disjoint from the wide-character
22       class "graph" and therefore also disjoint from its subclasses  "alnum",
23       "alpha", "upper", "lower", "digit", "xdigit", "punct".
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25       The  wide-character  class  "space"  contains  the wide-character class
26       "blank".
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28       The wide-character class "space" always contains  at  least  the  space
29       character and the control characters '\f', '\n', '\r', '\t', and '\v'.
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RETURN VALUE

32       The  iswspace()  function returns nonzero if wc is a wide character be‐
33       longing to the wide-character class  "space".   Otherwise,  it  returns
34       zero.
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ATTRIBUTES

37       For  an  explanation  of  the  terms  used  in  this  section,  see at‐
38       tributes(7).
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40       ┌─────────────────────────────────────┬───────────────┬────────────────┐
41       │Interface                            │ Attribute     │ Value          │
42       ├─────────────────────────────────────┼───────────────┼────────────────┤
43       │iswspace()                           │ Thread safety │ MT-Safe locale │
44       └─────────────────────────────────────┴───────────────┴────────────────┘
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STANDARDS

47       C11, POSIX.1-2008.
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HISTORY

50       POSIX.1-2001, C99.
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NOTES

53       The behavior of iswspace() depends on the LC_CTYPE category of the cur‐
54       rent locale.
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