ISASCII(3) | Library Functions Manual | ISASCII(3) |
isascii
— ASCII
character test
#include
<ctype.h>
int
isascii
(int
c);
The
isascii
()
function tests for an ASCII character, which is any character with a value
less than or equal to 0177.
The isascii
() function returns zero if the
character tests false or non-zero if the character tests true.
isalnum(3), isalpha(3), isblank(3), iscntrl(3), isdigit(3), isgraph(3), islower(3), isprint(3), ispunct(3), isspace(3), isupper(3), isxdigit(3), stdio(3), toascii(3), tolower(3), toupper(3), ascii(7)
The isascii
() function conforms to
X/Open Portability Guide Issue 4
(“XPG4”).
The isascii
() function first appeared in
Version 7 AT&T UNIX.
The argument to isascii
() must be
EOF
or representable as an unsigned
char
; otherwise, the result is undefined.
July 17, 2013 | OpenBSD-current |