Method CreateSparseMatrixTransposeView

internal/ceres/suitesparse.cc:109–138

}

cholmod_sparse SuiteSparse::CreateSparseMatrixTransposeView(
    CompressedRowSparseMatrix* A) {
  cholmod_sparse m;
  m.nrow = A->num_cols();
  m.ncol = A->num_rows();
  m.nzmax = A->num_nonzeros();
  m.nz = nullptr;
  m.p = reinterpret_cast<void*>(A->mutable_rows());
  m.i = reinterpret_cast<void*>(A->mutable_cols());
  m.x = reinterpret_cast<void*>(A->mutable_values());
  m.z = nullptr;

  if (A->storage_type() ==
      CompressedRowSparseMatrix::StorageType::LOWER_TRIANGULAR) {
    m.stype = 1;
  } else if (A->storage_type() ==
             CompressedRowSparseMatrix::StorageType::UPPER_TRIANGULAR) {
    m.stype = -1;
  } else {
    m.stype = 0;
  }

  m.itype = CHOLMOD_INT;
  m.xtype = CHOLMOD_REAL;
  m.dtype = CHOLMOD_DOUBLE;
  m.sorted = 1;
  m.packed = 1;

  return m;
}

cholmod_dense SuiteSparse::CreateDenseVectorView(const double* x, int size) {
  cholmod_dense v;