12   PetscReal     norm1, norm2, rnorm, tol = 10 * PETSC_SMALL;  in main()  local
189   PetscCall(MatNorm(sB, NORM_FROBENIUS, &norm2));  in main()
190   rnorm = PetscAbsReal(norm1 - norm2) / norm2;  in main()
191 …M_SELF, "Error: MatNorm_FROBENIUS, NormA=%16.14e NormsB=%16.14e\n", (double)norm1, (double)norm2));  in main()
193   PetscCall(MatNorm(sB, NORM_INFINITY, &norm2));  in main()
194   rnorm = PetscAbsReal(norm1 - norm2) / norm2;  in main()
195 …_SELF, "Error: MatNorm_INFINITY(), NormA=%16.14e NormsB=%16.14e\n", (double)norm1, (double)norm2));  in main()
197   PetscCall(MatNorm(sB, NORM_1, &norm2));  in main()
198   rnorm = PetscAbsReal(norm1 - norm2) / norm2;  in main()
199 …_SELF, "Error: MatNorm_INFINITY(), NormA=%16.14e NormsB=%16.14e\n", (double)norm1, (double)norm2));  in main()
253   PetscCall(VecNorm(s2, NORM_1, &norm2));  in main()
254   norm1 -= norm2;  in main()
263     PetscCall(VecNorm(s2, NORM_1, &norm2));  in main()
264     norm1 -= norm2;  in main()
275     PetscCall(VecNorm(s2, NORM_1, &norm2));  in main()
276     norm1 -= norm2;  in main()
330       PetscCall(VecNorm(s2, NORM_2, &norm2));  in main()
331 …orm1 < norm2) PetscCall(PetscPrintf(PETSC_COMM_SELF, "MatForwardSolve and BackwardSolve: Norm of e…  in main()
339     PetscCall(VecNorm(y, NORM_2, &norm2));  in main()
340 …norm2 && lf - inc != -1) PetscCall(PetscPrintf(PETSC_COMM_SELF, "lf=%" PetscInt_FMT ", %" PetscInt…  in main()
341     norm1 = norm2;  in main()
342     if (norm2 < tol && lf != -1) break;  in main()
360     PetscCall(VecNorm(x, NORM_2, &norm2));  in main()
361 …if (norm2 > tol) PetscCall(PetscPrintf(PETSC_COMM_SELF, "Error:MatSolve(), norm2: %g\n", (double)n…  in main()