- PSI_DECL(int iswalnum, [(wint_t wc)])
- PSI_DECL(int iswalpha, [(wint_t wc)])
- PSI_DECL(int iswcntrl, [(wint_t wc)])
- PSI_DECL(int iswctype, [(wint_t wc, wctype_t class)])
- PSI_DECL(int iswdigit, [(wint_t wc)])
- PSI_DECL(int iswgraph, [(wint_t wc)])
- PSI_DECL(int iswlower, [(wint_t wc)])
- PSI_DECL(int iswprint, [(wint_t wc)])
- PSI_DECL(int iswpunct, [(wint_t wc)])
- PSI_DECL(int iswspace, [(wint_t wc)])
- PSI_DECL(int iswupper, [(wint_t wc)])
- PSI_DECL(int iswxdigit, [(wint_t wc)])