/* Value for dist[j-2][i-1] (two rows up, one col left). */
/* Note: dist[0] is not initialized when j == 1, var unused. */
ed_dist diagdist1 = prevdist[0];
/* Value for dist[j-2][i-1] (two rows up, one col left). */
/* Note: dist[0] is not initialized when j == 1, var unused. */
ed_dist diagdist1 = prevdist[0];