NAME

       swab - swap adjacent bytes

SYNOPSIS

       #define _XOPEN_SOURCE       /* See feature_test_macros(7) */
       #include <unistd.h>

       void swab(const void *from, void *to, ssize_t n);

DESCRIPTION

       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.)

RETURN VALUE

       The swab() function returns no value.

CONFORMING TO

       SVr4, 4.3BSD, POSIX.1-2001.

SEE ALSO

       bstring(3)

COLOPHON

       This page is part of release 3.54 of the Linux man-pages project.  A  description  of  the  project,  and
       information about reporting bugs, can be found at http://www.kernel.org/doc/man-pages/.

                                                   2001-12-15                                            SWAB(3)