3.25 iswupper—uppercase wide character test

Synopsis

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

Description
iswupper is a function which classifies wide-character values that have uppercase translations.

Returns
iswupper returns non-zero if c is a uppercase wide character.

Portability
iswupper is C99.

No supporting OS subroutines are required.