swab - swap adjacent bytes
#define _XOPEN_SOURCE /* See feature_test_macros(7) */
#include <unistd.h>
void swab(const void *from, void *to, ssize_t n);
The
swab() function copies
n bytes from the array pointed to by
from to the array pointed to by
to, exchanging adjacent even and
odd bytes. This function is used to exchange data between machines that have
different low/high byte ordering.
This function does nothing when
n is negative. When
n is positive
and odd, it handles
n-1 bytes as above, and does something unspecified
with the last byte. (In other words,
n should be even.)
The
swab() function returns no value.
For an explanation of the terms used in this section, see
attributes(7).
Interface |
Attribute |
Value |
swab () |
Thread safety |
MT-Safe |
POSIX.1-2001, POSIX.1-2008, SVr4, 4.3BSD.
bstring(3)