swab - swap bytes

Syntax

#include <unistd.h> void swab(const void *src, void *dest, ssize_t nbytes);

Description swab() copies nbytes bytes, which are pointed to by src, to the object pointed to by dest,

	exchanging adjacent bytes. The nbytes argument should be even and not negative. If nbytes is odd and positive, swab() copies and exchanges nbytes-1 bytes, and the disposition of the last byte is unspecified. If nbytes is negative, swab() does nothing. If arguments overlap, the behavior of swab is undefined.
See also	unistd.h.