Function casuword

freebsd/kern/subr_uio.c:506–514

}

u_long
casuword(volatile u_long *addr, u_long old, u_long new)
{
	int rv;
	u_long val;

	rv = casueword(addr, old, &val, new);
	return (rv == -1 ? -1 : val);
}