SWAB(3)                FreeBSD Library Functions Manual                SWAB(3)

NAME
     swab - swap adjacent bytes

LIBRARY
     Standard C Library (libc, -lc)

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.

     The argument len must be an even number.  If len is less than zero,
     nothing will be done.

SEE ALSO
     bzero(3), memset(3)

HISTORY
     A swab() function appeared in Version 7 AT&T UNIX.

FreeBSD 13.1-RELEASE-p6          March 4, 2012         FreeBSD 13.1-RELEASE-p6