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

6       iswlower - test for lowercase wide character
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SYNOPSIS

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

14       The  iswlower()  function  is  the  wide-character  equivalent  of  the
15       islower(3) function.  It tests whether wc is a wide character belonging
16       to the wide-character class "lower".
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18       The  wide-character  class  "lower" is a subclass of the wide-character
19       class "alpha", and therefore also  a  subclass  of  the  wide-character
20       class  "alnum",  of  the  wide-character class "graph" and of the wide-
21       character class "print".
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23       Being a subclass of the wide-character class "print", the  wide-charac‐
24       ter class "lower" is disjoint from the wide-character class "cntrl".
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26       Being  a subclass of the wide-character class "graph", the wide-charac‐
27       ter class "lower" is disjoint from the wide-character class "space" and
28       its subclass "blank".
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30       Being  a subclass of the wide-character class "alnum", the wide-charac‐
31       ter class "lower" is disjoint from the wide-character class "punct".
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33       Being a subclass of the wide-character class "alpha", the  wide-charac‐
34       ter class "lower" is disjoint from the wide-character class "digit".
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36       The  wide-character class "lower" contains at least those characters wc
37       which are equal to towlower(wc) and different from towupper(wc).
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39       The wide-character class "lower" always contains at least  the  letters
40       'a' to 'z'.
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RETURN VALUE

43       The  iswlower()  function  returns  non-zero  if wc is a wide character
44       belonging to the wide-character class "lower".   Otherwise  it  returns
45       zero.
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CONFORMING TO

48       C99.
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NOTES

51       The behavior of iswlower() depends on the LC_CTYPE category of the cur‐
52       rent locale.
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54       This function is not very appropriate for dealing with Unicode  charac‐
55       ters,  because  Unicode knows about three cases: upper, lower and title
56       case.
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SEE ALSO

59       islower(3), iswctype(3), towlower(3)
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COLOPHON

62       This page is part of release 3.22 of the Linux  man-pages  project.   A
63       description  of  the project, and information about reporting bugs, can
64       be found at http://www.kernel.org/doc/man-pages/.
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68GNU                               1999-07-25                       ISWLOWER(3)
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