swab(3p) - phpMan

SWAB(P)                                                                SWAB(P)



NAME
       swab - swap bytes

SYNOPSIS
       #include <unistd.h>

       void swab(const void *restrict src, void *restrict dest,
              ssize_t nbytes);


DESCRIPTION
       The  swab()  function  shall copy nbytes bytes, which are pointed to by src, to the
       object pointed to by dest, exchanging adjacent bytes. The nbytes argument should be
       even. If nbytes is odd, swab() copies and exchanges nbytes-1 bytes and the disposi-
       tion of the last byte is unspecified. If copying takes place between  objects  that
       overlap, the behavior is undefined. If nbytes is negative, swab() does nothing.

RETURN VALUE
       None.

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, <unistd.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 .



POSIX                                2003                              SWAB(P)

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