NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | CONFORMING TO | SEE ALSO | COLOPHON

The Linux Programming Interface

SWAB(3)                       Linux Programmer's Manual                       SWAB(3)

NAME         top

       swab - swap adjacent bytes

SYNOPSIS         top

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

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

DESCRIPTION         top

       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         top

       The swab() function returns no value.

CONFORMING TO         top

       SVr4, 4.3BSD, POSIX.1-2001.

SEE ALSO         top

       bstring(3)

COLOPHON         top

       This page is part of release 3.32 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)

HTML rendering created 2010-12-03 by Michael Kerrisk, author of The Linux Programming Interface