#include #include #include #include "_assert.h" /** test whether a wide character is alphanumeric **/ int iswalnum(wint_t wc) { ASSERT_REPRESENTABLE(wc, WCHAR_MIN, WCHAR_MAX, "wchar_t", WEOF); return iswalpha(wc) || iswdigit(wc); } /*** The fn(iswalnum) function tests whether arg(wc) is a wide character in the class cclass(alpha) or cclass(digit) in the current locale. ***/ /* RETURN(NZ): arg(wc) is an alphanumeric character */ /* RETURN(0): arg(wc) is not an alphanumeric character */ /* UNSPECIFIED: - */ /* IMPLEMENTATION: - */ /* LOCALE: LC_CTYPE */ /* STDC(199409) */