ISASCII(P) POSIX Programmer's Manual ISASCII(P)NAMEisascii - 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 charac‐
ter 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
None.
RATIONALE
None.
FUTURE DIRECTIONS
None.
SEE ALSO
The Base Definitions volume of IEEE Std 1003.1-2001, <ctype.h>
COPYRIGHT
Portions of this text are reprinted and reproduced in electronic form
from IEEE Std 1003.1, 2003 Edition, Standard for Information Technology
-- Portable Operating System Interface (POSIX), The Open Group Base
Specifications Issue 6, Copyright (C) 2001-2003 by the Institute of
Electrical and Electronics Engineers, Inc and The Open Group. In the
event of any discrepancy between this version and the original IEEE and
The Open Group Standard, the original IEEE and The Open Group Standard
is the referee document. The original Standard can be obtained online
at http://www.opengroup.org/unix/online.html .
IEEE/The Open Group 2003 ISASCII(P)
