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



NAME
       swab - swap adjacent bytes

SYNOPSIS
       #define _XOPEN_SOURCE
       #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 some-
       thing 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), feature_test_macros(7)

COLOPHON
       This  page  is  part of release 3.25 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)