@c ----------------------------------------------------------------------
@node isascii, ctype
@findex isascii
@subheading Syntax

@example
#include <ctype.h>

int isascii(int c);
@end example

@subheading Description

Tells if @var{c} is an ASCII character (0x00 to 0x7f).

@subheading Return Value

Nonzero if @var{c} is ASCII, else zero.


@subheading Portability

@portability !ansi, !posix