libc.info: iswlower

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`iswlower'--lower-case wide-character test

*Synopsis*
     #include <wctype.h>
     int iswlower(wint_t C);
   *Description*
`iswlower' is a function which classifies wide-character values that
have an upper-case translation.
*Returns*
`iswlower' returns non-zero if C is a lower-case wide-character.
*Portability*
`iswlower' is C99.
   No supporting OS subroutines are required.