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.