NAME
swab —
swap adjacent bytes
SYNOPSIS
#include
<unistd.h>
void
swab(const void *restrict src,
void *restrict dst, ssize_t
len);
DESCRIPTION
The
swab()
function copies len bytes from the location referenced
by src to the location referenced by
dst, swapping adjacent bytes.
If len is zero or less,
swab() does
nothing. If it is odd, what happens to the last byte is unspecified. If
src and dst overlap, behaviour
is undefined.
SEE ALSO
STANDARDS
The swab() function is compliant with the
X/Open System Interfaces option of the IEEE Std 1003.1-2008
(“POSIX.1”) specification.
HISTORY
The swab() function first appeared in
Version 7 AT&T UNIX.