iswblank(3) Library Functions Manual iswblank(3) iswblank - , (whitespace) C (libc, -lc) #include int iswblank(wint_t wc); glibc (. feature_test_macros(7)): iswblank(): _ISOC99_SOURCE || _POSIX_C_SOURCE >= 200112L iswblank() isblank(3), . , wc , <>. <> <>. <> <> <> , , <>, <>, <>, <>, <>, <>, <>. The wide-character class "blank" always contains at least the space character and the control character '\t'. iswblank() , wc , <>. 0. attributes(7). +----------------------------+----------------------------------------------------------+--------------------------+ | | | | +----------------------------+----------------------------------------------------------+--------------------------+ |iswblank() | | MT-Safe locale | +----------------------------+----------------------------------------------------------+--------------------------+ POSIX.1-2008. POSIX.1-2001. iswblank() LC_CTYPE . isblank(3), iswctype(3) () Azamat Hackimov , Dmitriy S. Seregin , Yuri Kozlov ; GNU (GNU General Public License - GPL, 3 ) , - . - , , () () () . Linux man-pages 6.18 8 2026 . iswblank(3)