|ISASCII(3)||Library Functions Manual||ISASCII(3)|
isascii() function tests for an ASCII character, which is any character with a value less than or equal to 0177.
isascii() function returns zero if the character tests false or non-zero if the character tests true.
isascii() function conforms to X/Open Portability Guide Issue 4 (“XPG4”).
isascii() function first appeared in Version 7 AT&T UNIX.
isascii() must be
EOFor representable as an
unsigned char; otherwise, the result is undefined.
|July 17, 2013||OpenBSD-current|