1ISASCII(P)                 POSIX Programmer's Manual                ISASCII(P)
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NAME

6       isascii - test for a 7-bit US-ASCII character
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SYNOPSIS

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

15       The isascii() function shall test whether c is a 7-bit US-ASCII charac‐
16       ter code.
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18       The isascii() function is defined on all integer values.
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RETURN VALUE

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

26       No errors are defined.
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28       The following sections are informative.
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EXAMPLES

31       None.
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APPLICATION USAGE

34       None.
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RATIONALE

37       None.
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FUTURE DIRECTIONS

40       None.
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SEE ALSO

43       The Base Definitions volume of IEEE Std 1003.1-2001, <ctype.h>
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46       Portions of this text are reprinted and reproduced in  electronic  form
47       from IEEE Std 1003.1, 2003 Edition, Standard for Information Technology
48       -- Portable Operating System Interface (POSIX),  The  Open  Group  Base
49       Specifications  Issue  6,  Copyright  (C) 2001-2003 by the Institute of
50       Electrical and Electronics Engineers, Inc and The Open  Group.  In  the
51       event of any discrepancy between this version and the original IEEE and
52       The Open Group Standard, the original IEEE and The Open Group  Standard
53       is  the  referee document. The original Standard can be obtained online
54       at http://www.opengroup.org/unix/online.html .
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58IEEE/The Open Group                  2003                           ISASCII(P)
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