iswdigit(3) Library Functions Manual iswdigit(3) NAME iswdigit - test for decimal digit wide character LIBRARY Standard C library (libc, -lc) SYNOPSIS #include <wctype.h> int iswdigit(wint_t wc); DESCRIPTION The iswdigit() function is the wide-character equivalent of the is- digit(3) function. It tests whether wc is a wide character belonging to the wide-character class "digit". The wide-character class "digit" is a subclass of the wide-character class "xdigit", and therefore also a subclass of the wide-character class "alnum", of the wide-character class "graph" and of the wide- character class "print". Being a subclass of the wide character class "print", the wide-charac- ter class "digit" is disjoint from the wide-character class "cntrl". Being a subclass of the wide-character class "graph", the wide-charac- ter class "digit" is disjoint from the wide-character class "space" and its subclass "blank". Being a subclass of the wide-character class "alnum", the wide-charac- ter class "digit" is disjoint from the wide-character class "punct". The wide-character class "digit" is disjoint from the wide-character class "alpha" and therefore also disjoint from its subclasses "lower", "upper". The wide-character class "digit" always contains exactly the digits '0' to '9'. RETURN VALUE The iswdigit() function returns nonzero if wc is a wide character be- longing to the wide-character class "digit". Otherwise, it returns zero. ATTRIBUTES For an explanation of the terms used in this section, see at- tributes(7). ┌─────────────────────────────────────┬───────────────┬────────────────┐ │Interface │ Attribute │ Value │ ├─────────────────────────────────────┼───────────────┼────────────────┤ │iswdigit() │ Thread safety │ MT-Safe locale │ └─────────────────────────────────────┴───────────────┴────────────────┘ STANDARDS POSIX.1-2001, POSIX.1-2008, C99. NOTES The behavior of iswdigit() depends on the LC_CTYPE category of the cur- rent locale. SEE ALSO isdigit(3), iswctype(3) Linux man-pages 6.03 2023-02-05 iswdigit(3)
Generated by dwww version 1.15 on Fri Jun 28 02:04:01 CEST 2024.