private void setW ( ) { if ( saveW ) { W . col0 = Y . col0 ; W . col1 = Y . col1 ; W . row0 = Y . row0 ; W . row1 = Y . row1 ; } else { W . col1 = Y . col1 - Y . col0 ; W . row0 = Y . row0 ; } }
Sets the submatrix of W up give Y is already configured and if it is being cached or not .