isascii (3p)

PROLOG

This manual page is part of the POSIX Programmer's Manual. The Linux implementation of this interface may differ (consult the corresponding Linux manual page for details of Linux behavior), or the interface may not be implemented on Linux.
 

NAME

isascii — test for a 7-bit US-ASCII character

SYNOPSIS

#include <ctype.h>
int isascii(int c);

DESCRIPTION

The isascii() function shall test whether c is a 7-bit US-ASCII character code.
The isascii() function is defined on all integer values.

RETURN VALUE

The isascii() function shall return non-zero if c is a 7-bit US-ASCII character code between 0 and octal 0177 inclusive; otherwise, it shall return 0.

ERRORS

No errors are defined.
The following sections are informative.

EXAMPLES

None.

APPLICATION USAGE

The isascii() function cannot be used portably in a localized application.

RATIONALE

None.

FUTURE DIRECTIONS

The isascii() function may be removed in a future version.

SEE ALSO

The Base Definitions volume of POSIX.1‐2008, <ctype.h>

Information

Source
POSIX
OS/version
IEEE/The Open Group
Source updated
January 1, 2013
Page created
March 3, 2018
Page generated
March 4, 2018