trusty (3) isascii.3posix.gz

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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
       None.


RATIONALE
       None.


FUTURE DIRECTIONS
       None.


SEE ALSO
       The Base Definitions volume of IEEE Std 1003.1-2001, <ctype.h>


       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 .