iswdigit(3) Library Functions Manual iswdigit(3) iswdigit - , C (libc, -lc) #include int iswdigit(wint_t wc); iswdigit() isdigit(3), . , wc , <>. <> <> , , <>, <> <>. <>, <> <>. <>, <> <> <>. <>, <> <>. <> <> , , <>, <>. The wide-character class "digit" always contains exactly the digits '0' to '9'. iswdigit() , wc , <>. 0. attributes(7). +----------------------------+----------------------------------------------------------+--------------------------+ | | | | +----------------------------+----------------------------------------------------------+--------------------------+ |iswdigit() | | MT-Safe locale | +----------------------------+----------------------------------------------------------+--------------------------+ C11, POSIX.1-2008. POSIX.1-2001, C99. iswdigit() LC_CTYPE . isdigit(3), iswctype(3) () Azamat Hackimov , Dmitriy S. Seregin , Yuri Kozlov ; GNU (GNU General Public License - GPL, 3 ) , - . - , , () () () . Linux man-pages 6.18 8 2026 . iswdigit(3)