NAME
swab —
swap adjacent bytes
SYNOPSIS
#include
<unistd.h>
void
swab(const void *restrict src,
void *restrict dst, ssize_t
len);
DESCRIPTION
The function
swab()
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.