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3.22 iswlower—lowercase wide character test

Synopsis 

     #include <wctype.h>
     int iswlower(wint_t c);

Description
iswlower is a function which classifies wide-character values that have uppercase translations.
Returns
iswlower returns non-zero if c is a lowercase wide character.
Portability
iswlower is C99.

No supporting OS subroutines are required.