45     DenseMatrix refMat = DenseMatrix::Zero(rows, cols);  in sparse_block()  local
46     initSparse<Scalar>(density, refMat, m);  in sparse_block()
48     VERIFY_IS_APPROX(m, refMat);  in sparse_block()
58       VERIFY_IS_APPROX(m.block(i,j,h,w), refMat.block(i,j,h,w));  in sparse_block()
61         VERIFY_IS_APPROX(m.block(i,j,h,w).col(c), refMat.block(i,j,h,w).col(c));  in sparse_block()
64           VERIFY_IS_APPROX(m.block(i,j,h,w).col(c).coeff(r), refMat.block(i,j,h,w).col(c).coeff(r));  in sparse_block()
65           VERIFY_IS_APPROX(m.block(i,j,h,w).coeff(r,c), refMat.block(i,j,h,w).coeff(r,c));  in sparse_block()
70         VERIFY_IS_APPROX(m.block(i,j,h,w).row(r), refMat.block(i,j,h,w).row(r));  in sparse_block()
73           VERIFY_IS_APPROX(m.block(i,j,h,w).row(r).coeff(c), refMat.block(i,j,h,w).row(r).coeff(c));  in sparse_block()
74           VERIFY_IS_APPROX(m.block(i,j,h,w).coeff(r,c), refMat.block(i,j,h,w).coeff(r,c));  in sparse_block()
78       VERIFY_IS_APPROX(m.middleCols(j,w), refMat.middleCols(j,w));  in sparse_block()
79       VERIFY_IS_APPROX(m.middleRows(i,h), refMat.middleRows(i,h));  in sparse_block()
82         VERIFY_IS_APPROX(m.middleCols(j,w).row(r), refMat.middleCols(j,w).row(r));  in sparse_block()
83         VERIFY_IS_APPROX(m.middleRows(i,h).row(r), refMat.middleRows(i,h).row(r));  in sparse_block()
86           VERIFY_IS_APPROX(m.col(c).coeff(r), refMat.col(c).coeff(r));  in sparse_block()
87           VERIFY_IS_APPROX(m.row(r).coeff(c), refMat.row(r).coeff(c));  in sparse_block()
89           VERIFY_IS_APPROX(m.middleCols(j,w).coeff(r,c), refMat.middleCols(j,w).coeff(r,c));  in sparse_block()
90           VERIFY_IS_APPROX(m.middleRows(i,h).coeff(r,c), refMat.middleRows(i,h).coeff(r,c));  in sparse_block()
93             VERIFY_IS_APPROX(m.middleCols(j,w).coeffRef(r,c), refMat.middleCols(j,w).coeff(r,c));  in sparse_block()
97             VERIFY_IS_APPROX(m.middleRows(i,h).coeff(r,c), refMat.middleRows(i,h).coeff(r,c));  in sparse_block()
103         VERIFY_IS_APPROX(m.middleCols(j,w).col(c), refMat.middleCols(j,w).col(c));  in sparse_block()
104         VERIFY_IS_APPROX(m.middleRows(i,h).col(c), refMat.middleRows(i,h).col(c));  in sparse_block()
111       VERIFY_IS_APPROX(m.col(c) + m.col(c), refMat.col(c) + refMat.col(c));  in sparse_block()
117       VERIFY_IS_APPROX(m.row(r) + m.row(r), refMat.row(r) + refMat.row(r));  in sparse_block()