scalarBandSWA code potential error

[JustKshitijD]

In scalarBandSWA code, shouldn't this line - (M = M? M + sc : 0;) be (M = (M+sc>0)? M + sc : 0;)
,i.e, we want to do - _H[i,j]=max(H[i-1,j-1]+S(i,j) ,0), but it seems that we are doing -
H[i-1,j-1]==0 ? (H[i,j]=0):(H[i,j]=H[i-1,j-1]+S(i,j))