248     Index n0 = internal::random<Index>(1,rows-(std::max)(j0,j1));  in sparse_basic()  local
250       VERIFY_IS_APPROX(m2.innerVectors(j0,n0), refMat2.block(j0,0,n0,cols));  in sparse_basic()
252       VERIFY_IS_APPROX(m2.innerVectors(j0,n0), refMat2.block(0,j0,rows,n0));  in sparse_basic()
254       VERIFY_IS_APPROX(m2.innerVectors(j0,n0)+m2.innerVectors(j1,n0),  in sparse_basic()
255                        refMat2.middleRows(j0,n0)+refMat2.middleRows(j1,n0));  in sparse_basic()
257       VERIFY_IS_APPROX(m2.innerVectors(j0,n0)+m2.innerVectors(j1,n0),  in sparse_basic()
258                       refMat2.block(0,j0,rows,n0)+refMat2.block(0,j1,rows,n0));  in sparse_basic()
262     m2.innerVectors(j0,n0) = m2.innerVectors(j0,n0) + m2.innerVectors(j1,n0);  in sparse_basic()
264       refMat2.middleRows(j0,n0) = (refMat2.middleRows(j0,n0) + refMat2.middleRows(j1,n0)).eval();  in sparse_basic()
266       refMat2.middleCols(j0,n0) = (refMat2.middleCols(j0,n0) + refMat2.middleCols(j1,n0)).eval();  in sparse_basic()
338     Index n0 = internal::random<Index>(1,rows-(std::max)(j0,j1));  in sparse_basic()  local
340       VERIFY_IS_APPROX(m2.block(j0,0,n0,cols), refMat2.block(j0,0,n0,cols));  in sparse_basic()
342       VERIFY_IS_APPROX(m2.block(0,j0,rows,n0), refMat2.block(0,j0,rows,n0));  in sparse_basic()
345       VERIFY_IS_APPROX(m2.block(j0,0,n0,cols)+m2.block(j1,0,n0,cols),  in sparse_basic()
346                       refMat2.block(j0,0,n0,cols)+refMat2.block(j1,0,n0,cols));  in sparse_basic()
348       VERIFY_IS_APPROX(m2.block(0,j0,rows,n0)+m2.block(0,j1,rows,n0),  in sparse_basic()
349                       refMat2.block(0,j0,rows,n0)+refMat2.block(0,j1,rows,n0));  in sparse_basic()
368     VERIFY_IS_APPROX(m2.block(j0,j1,n0,n0), refMat2.block(j0,j1,n0,n0));  in sparse_basic()
369     VERIFY_IS_APPROX((2*m2).block(j0,j1,n0,n0), (2*refMat2).block(j0,j1,n0,n0));  in sparse_basic()