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NetBSD 6.1.5 - man page for swab (netbsd section 3)

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 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.

     If len is negative or zero, swab() does nothing.  If len is odd, swab() copies len - 1 bytes
     and the disposition of the last byte is unspecified.

SEE ALSO
     bzero(3), memset(3)

STANDARDS
     The swab() function conforms to IEEE Std 1003.1-2001 (``POSIX.1'').

HISTORY
     A swab() function appeared in Version 7 AT&T UNIX.  It was originally documented to be
     ``useful for carrying binary data between PDP11's and other machines''.

     In NetBSD 6.0 the type of len was changed from size_t to ssize_t for POSIX compliance.

BSD					  April 30, 2010				      BSD


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