56   PetscReal   nrm;  in TestMatrix()  local
97   PetscCall(VecNorm(W2, NORM_2, &nrm));  in TestMatrix()
99 …PetscCheck(nrm <= PETSC_SMALL, PETSC_COMM_SELF, PETSC_ERR_PLIB, "MatMultAdd(A,x,x,y) produces inco…  in TestMatrix()
106   PetscCall(VecNorm(W2, NORM_2, &nrm));  in TestMatrix()
108 …PetscCheck(nrm <= PETSC_SMALL, PETSC_COMM_SELF, PETSC_ERR_PLIB, "MatMultAdd(A,x,y,y) produces inco…  in TestMatrix()
119   PetscCall(VecNorm(W2, NORM_2, &nrm));  in TestMatrix()
121 …PetscCheck(nrm <= PETSC_SMALL, PETSC_COMM_SELF, PETSC_ERR_PLIB, "MatMultTransposeAdd(A,x,x,y) prod…  in TestMatrix()
128   PetscCall(VecNorm(W2, NORM_2, &nrm));  in TestMatrix()
130 …PetscCheck(nrm <= PETSC_SMALL, PETSC_COMM_SELF, PETSC_ERR_PLIB, "MatMultTransposeAdd(A,x,y,y) prod…  in TestMatrix()
142   PetscCall(VecNorm(W3, NORM_2, &nrm));  in TestMatrix()
144 …PetscCheck(nrm <= PETSC_SMALL, PETSC_COMM_SELF, PETSC_ERR_PLIB, "MatMultHermitianTransposeAdd(A,x,…  in TestMatrix()
152   PetscCall(VecNorm(W3, NORM_2, &nrm));  in TestMatrix()
154 …PetscCheck(nrm <= PETSC_SMALL, PETSC_COMM_SELF, PETSC_ERR_PLIB, "MatMultHermitianTransposeAdd(A,x,…  in TestMatrix()
163   PetscCall(VecNorm(diff, NORM_2, &nrm));  in TestMatrix()
165 …PetscCheck(nrm <= PETSC_SMALL, PETSC_COMM_SELF, PETSC_ERR_PLIB, "MatGetDiagonal() produces incorre…  in TestMatrix()