HP-UX Reference (11i v2 03/08) - 3 Library Functions N-Z (vol 7)

swab(3C) swab(3C)

NAME

swab( ) - swap bytes

SYNOPSIS

#include <unistd.h>

void swab(const void *from, void *to, ssize_t nbytes);

DESCRIPTION

swab() copies nbytes bytes pointed to by from to the array pointed to by to, exchanging adjacent even

and odd bytes. It is useful for carrying binary data between byte-swapped and non-byte-swapped

machines. nbytes should be even and non-negative. If nbytes is odd and positive

swab() uses nbytes−1

instead. If nbytes is negative,

swab() does nothing.