25   Mat          A, A_save, B, AT, ATT, BT, BTT, P, R, C, C1;  in main()  local
175     PetscCall(MatDuplicate(C, MAT_COPY_VALUES, &C1));  in main()
176     PetscCall(MatDestroy(&C1));  in main()
208       PetscCall(MatMatMult(R, B, MAT_INITIAL_MATRIX, fill, &C1));  in main()
210       PetscCall(MatMatMult(R, B, MAT_REUSE_MATRIX, fill, &C1));  in main()
211       PetscCall(MatDestroy(&C1));  in main()
231     PetscCall(MatMatMult(R, B, MAT_INITIAL_MATRIX, fill, &C1));  in main()
232     PetscCall(MatNormDifference(C, C1, &norm));  in main()
234     PetscCall(MatDestroy(&C1));  in main()
237     PetscCall(MatDuplicate(C, MAT_COPY_VALUES, &C1));  in main()
238     PetscCall(MatDestroy(&C1));  in main()
252       PetscCall(MatMatMult(B, P, MAT_INITIAL_MATRIX, fill, &C1));  in main()
253       PetscCall(MatNormDifference(C, C1, &norm));  in main()
255       PetscCall(MatDestroy(&C1));  in main()