| ISRUNE(3) | Library Functions Manual | ISRUNE(3) |
isrune — valid
character test
Standard C Library (libc, -lc)
#include
<ctype.h>
int
isrune(int
c);
The
isrune()
function tests for any character that is valid in the current character set.
In the ASCII character set, this is equivalent to
isascii().
The isrune() function returns zero if the
character tests false and returns non-zero if the character tests true.
The isrune() function appeared in
4.4BSD.
| March 30, 2004 | macOS 15.0 |