1ISWCNTRL(3)                Linux Programmer's Manual               ISWCNTRL(3)
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NAME

6       iswcntrl - test for control wide character
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SYNOPSIS

9       #include <wctype.h>
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11       int iswcntrl(wint_t wc);
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DESCRIPTION

14       The  iswcntrl()  function is the wide-character equivalent of the iscn‐
15       trl(3) function.  It tests whether wc is a wide character belonging  to
16       the wide-character class "cntrl".
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18       The  wide-character  class  "cntrl" is disjoint from the wide-character
19       class "print" and therefore also disjoint from its subclasses  "graph",
20       "alpha", "upper", "lower", "digit", "xdigit", "punct".
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22       For  an unsigned char c, iscntrl(c) implies iswcntrl(btowc(c)), but not
23       vice versa.
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RETURN VALUE

26       The iswcntrl() function returns nonzero  if  wc  is  a  wide  character
27       belonging  to  the  wide-character class "cntrl".  Otherwise it returns
28       zero.
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CONFORMING TO

31       C99.
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NOTES

34       The behavior of iswcntrl() depends on the LC_CTYPE category of the cur‐
35       rent locale.
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SEE ALSO

38       iscntrl(3), iswctype(3)
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COLOPHON

41       This  page  is  part of release 3.53 of the Linux man-pages project.  A
42       description of the project, and information about reporting  bugs,  can
43       be found at http://www.kernel.org/doc/man-pages/.
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47GNU                               1999-07-25                       ISWCNTRL(3)
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