1SWAB(3P)                   POSIX Programmer's Manual                  SWAB(3P)
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PROLOG

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

13       swab — swap bytes
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SYNOPSIS

16       #include <unistd.h>
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18       void swab(const void *restrict src, void *restrict dest,
19           ssize_t nbytes);
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DESCRIPTION

22       The swab() function shall copy nbytes bytes, which are  pointed  to  by
23       src,  to  the object pointed to by dest, exchanging adjacent bytes. The
24       nbytes argument should be even. If nbytes is  odd,  swab()  copies  and
25       exchanges  nbytes−1  bytes  and  the  disposition  of  the last byte is
26       unspecified. If copying takes place between objects that  overlap,  the
27       behavior is undefined.  If nbytes is negative, swab() does nothing.
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RETURN VALUE

30       None.
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ERRORS

33       No errors are defined.
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35       The following sections are informative.
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EXAMPLES

38       None.
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APPLICATION USAGE

41       None.
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RATIONALE

44       None.
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FUTURE DIRECTIONS

47       None.
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SEE ALSO

50       The Base Definitions volume of POSIX.1‐2008, <unistd.h>
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53       Portions  of  this text are reprinted and reproduced in electronic form
54       from IEEE Std 1003.1, 2013 Edition, Standard for Information Technology
55       --  Portable  Operating  System  Interface (POSIX), The Open Group Base
56       Specifications Issue 7, Copyright (C) 2013 by the Institute of Electri‐
57       cal  and  Electronics  Engineers,  Inc  and  The  Open Group.  (This is
58       POSIX.1-2008 with the 2013 Technical Corrigendum  1  applied.)  In  the
59       event of any discrepancy between this version and the original IEEE and
60       The Open Group Standard, the original IEEE and The Open Group  Standard
61       is  the  referee document. The original Standard can be obtained online
62       at http://www.unix.org/online.html .
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64       Any typographical or formatting errors that appear  in  this  page  are
65       most likely to have been introduced during the conversion of the source
66       files to man page format. To report such errors,  see  https://www.ker‐
67       nel.org/doc/man-pages/reporting_bugs.html .
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71IEEE/The Open Group                  2013                             SWAB(3P)
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