sunos man page for swab

swab(9F)						   Kernel Functions for Drivers 						  swab(9F)

NAME
       swab - swap bytes in 16-bit halfwords

SYNOPSIS
       #include <sys/sunddi.h>

       void swab(void *src, void *dst, size_t nbytes);

INTERFACE LEVEL
       Architecture independent level 1 (DDI/DKI).

PARAMETERS
       src	A pointer to the buffer containing the bytes to be swapped.

       dst	A  pointer  to	the  destination  buffer  where the swapped bytes will be written.  If	dst is the same as  src the buffer will be
		swapped in place.

       nbytes	Number of bytes to be swapped, rounded down to the nearest half-word.

DESCRIPTION
       swab() copies the bytes in the buffer pointed to by src to the buffer pointer to by dst, swapping the order of adjacent bytes in  half-word
       pairs as the copy proceeds. A total of nbytes bytes are copied, rounded down to the nearest half-word.

CONTEXT
       swab() can be called from user or interrupt context.

SEE ALSO
       Writing Device Drivers

NOTES
       Since swab() operates byte-by-byte, it can be used on non-aligned buffers.

SunOS 5.10							    1 Feb 1991								  swab(9F)