iswdigit 45 gnulib-tests/test-wctype-h.c (void) iswdigit (0); iswdigit 58 gnulib-tests/test-wctype-h.c ASSERT (!iswdigit (e)); iswdigit 224 lib/mbchar.h #define mb_isdigit(mbc) ((mbc).wc_valid && iswdigit ((mbc).wc)) iswdigit 191 lib/wctype.in.h iswdigit