SUM2P
t = SUM2P(tbl[n2].hi - 1, tbl[n2].lo * (r1 + 1) + t * q +
t = SUM2P(tbl[n2].hi - 2, tbl[n2].lo * (r1 + 1) + t * q +
t = SUM2P(tbl[n2].hi, tbl[n2].lo + t * (q + r1));
t = SUM2P(tbl[n2].hi, tbl[n2].lo + t * (q + r1));
t = SUM2P(tbl[n2].hi, tbl[n2].lo - twomk + t * (q + r1));
t = SUM2P(tbl[n2].hi - twomk, tbl[n2].lo + t * (q + r1));
t = SUM2P(hi, lo);
t = SUM2P(tbl[n2].hi - 1, tbl[n2].lo * (r1 + 1) + t * q +
t = SUM2P(tbl[n2].hi - 2, tbl[n2].lo * (r1 + 1) + t * q +
t = SUM2P(tbl[n2].hi, tbl[n2].lo + t * (q + r1));
t = SUM2P(tbl[n2].hi, tbl[n2].lo + t * (q + r1));
t = SUM2P(tbl[n2].hi, tbl[n2].lo - twomk + t * (q + r1));
t = SUM2P(tbl[n2].hi - twomk, tbl[n2].lo + t * (q + r1));
t = SUM2P(hi, lo);