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() 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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SEE ALSO

51       islower(3), iswctype(3), towlower(3)
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NOTES

54       The  behaviour  of  iswlower()  depends on the LC_CTYPE category of the
55       current locale.
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57       This function is not very appropriate for dealing with Unicode  charac‐
58       ters,  because  Unicode knows about three cases: upper, lower and title
59       case.
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63GNU                               1999-07-25                       ISWLOWER(3)