This manual page is part of the POSIX Programmer's Manual. The Linux
implementation of this interface may differ (consult the corresponding Linux
manual page for details of Linux behavior), or the interface may not be
implemented on Linux.
void swab(const void *restrict src, void *restrict dest,
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 disposition
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.
No errors are defined.
The following sections are informative.
The Base Definitions volume of POSIX.1‐2017,
Portions of this text are reprinted and reproduced in electronic form from IEEE
Std 1003.1-2017, Standard for Information Technology -- Portable Operating
System Interface (POSIX), The Open Group Base Specifications Issue 7, 2018
Edition, Copyright (C) 2018 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 .
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