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swab(3)                  BSD 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 dest, ssize_t nbytes);


DESCRIPTION

     The function swab() copies nbytes bytes from the location referenced by
     src to the location referenced by dest, swapping adjacent bytes.

     The argument nbytes should be an even number.  If nbytes is odd, swab()
     copies and exchanges nbytes -1 bytes and the disposition of the last byte
     is unspecified.  If copying takes place between objects that overlap, the
     behavior is undefined. If nbytes is negative, swab() does nothing.


SEE ALSO

     bzero(3), memset(3), compat(5)


HISTORY

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

BSD                            February 24, 2010                           BSD

Mac OS X 10.8 - Generated Fri Aug 31 15:40:20 CDT 2012
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