Unknown option: "-3"
Unix manual page for isrune. (host=minya system=Darwin)
ISRUNE(3) BSD Library Functions Manual ISRUNE(3)
NAME
isrune -- valid character test
LIBRARY
Standard C Library (libc, -lc)
SYNOPSIS
#include <ctype.h>
int
isrune(int c);
DESCRIPTION
The isrune() function tests for any character that is valid in the cur-
rent character set. In the ASCII character set, this is equivalent to
isascii().
RETURN VALUES
The isrune() function returns zero if the character tests false and
returns non-zero if the character tests true.
SEE ALSO
ctype(3), isascii(3), iswrune(3), ascii(7), isalnum_l
HISTORY
The isrune() function appeared in 4.4BSD.
BSD March 30, 2004 BSD