| Linux / Unix Command: iswalnum |
NAME
iswalnum - test for alphanumeric wide characterSYNOPSIS
#include <wctype.h> int iswalnum(wint_t wc);
DESCRIPTION
The iswalnum function is the wide-character equivalent of the isalnum function. It tests whether wc is a wide character belonging to the wide character class "alnum".The wide character class "alnum" is a subclass of the wide character class "graph", and therefore also a subclass of the wide character class "print".
Being a subclass of the wide character class "print", the wide character class "alnum" is disjoint from the wide character class "cntrl".
Being a subclass of the wide character class "graph", the wide character class "alnum" is disjoint from the wide character class "space" and its subclass "blank".
The wide character class "alnum" is disjoint from the wide character class "punct".
The wide character class "alnum" is the union of the wide character classes "alpha" and "digit". As such, it also contains the wide character class "xdigit".
The wide character class "alnum" always contains at least the letters 'A' to 'Z', 'a' to 'z' and the digits '0' to '9'.
RETURN VALUE
The iswalnum function returns non-zero if wc is a wide character belonging to the wide character class "alnum". Otherwise it returns zero.CONFORMING TO
ISO/ANSI C, UNIX98SEE ALSO
isalnum(3), iswctype(3)Important: Use the man command (% man) to see how a command is used on your particular computer.
