cl_hash(LZWCodecState* sp)
{
	register hash_t *hp = &sp->enc_hashtab[HSIZE-1];
	register long i = HSIZE-8;

	do {
		i -= 8;
		hp[-7].hash = -1;
		hp[-6].hash = -1;
		hp[-5].hash = -1;
		hp[-4].hash = -1;
		hp[-3].hash = -1;
		hp[-2].hash = -1;
		hp[-1].hash = -1;
		hp[ 0].hash = -1;
		hp -= 8;
	} while (i >= 0);
	for (i += 8; i > 0; i--, hp--)
		hp->hash = -1;
}