void initialize ( DMatrixSparseCSC A ) { m = A . numRows ; n = A . numCols ; int s = 4 * n + ( ata ? ( n + m + 1 ) : 0 ) ; gw . reshape ( s ) ; w = gw . data ; // compute the transpose of A At . reshape ( A . numCols , A . numRows , A . nz_length ) ; CommonOps_DSCC . transpose ( A , At , gw ) ; // initialize w Arrays . fill ( w , 0 , s , - 1 ) ; // assign all values in workspace to -1 ancestor = 0 ; maxfirst = n ; prevleaf = 2 * n ; first = 3 * n ; }
Initializes class data structures and parameters