/* FUNCTION <>---alpha-numeric wide-character test INDEX iswalnum ANSI_SYNOPSIS #include int iswalnum(wint_t <[c]>); TRAD_SYNOPSIS #include int iswalnum(<[c]>) wint_t <[c]>; DESCRIPTION <> is a function which classifies wide-character values that are alpha-numeric. RETURNS <> returns non-zero if <[c]> is a alpha-numeric wide-character. PORTABILITY <> is C99. No supporting OS subroutines are required. */ #include <_ansi.h> #include int _DEFUN(iswalnum,(c),wint_t c) { return (iswalpha (c) || iswdigit (c)); }