15     PetscCall(MatMult(corr_ctx->inv_smat, corr_ctx->sw[0], corr_ctx->sw[1]));  in PCBDDCNullSpaceCorrPreSolve()
17     PetscCall(MatMultTranspose(corr_ctx->inv_smat, corr_ctx->sw[0], corr_ctx->sw[1]));  in PCBDDCNullSpaceCorrPreSolve()
44   PetscCall(MatMult(corr_ctx->inv_smat, corr_ctx->sw[0], corr_ctx->sw[2]));  in PCBDDCNullSpaceCorrPostSolve()
61   PetscCall(MatDestroy(&corr_ctx->inv_smat));  in PCBDDCNullSpaceCorrDestroy()
104 …Mult(Kbasis_mat, shell_ctx->basis_mat, MAT_INITIAL_MATRIX, PETSC_DETERMINE, &shell_ctx->inv_smat));  in PCBDDCNullSpaceAssembleCorrection()
106   PetscCall(MatBindToCPU(shell_ctx->inv_smat, PETSC_TRUE));  in PCBDDCNullSpaceAssembleCorrection()
107   PetscCall(MatFindZeroRows(shell_ctx->inv_smat, &zerorows));  in PCBDDCNullSpaceAssembleCorrection()
114 …for (i = 0; i < nz; i++) PetscCall(MatSetValue(shell_ctx->inv_smat, idxs[i], idxs[i], 1.0, INSERT_…  in PCBDDCNullSpaceAssembleCorrection()
116     PetscCall(MatAssemblyBegin(shell_ctx->inv_smat, MAT_FINAL_ASSEMBLY));  in PCBDDCNullSpaceAssembleCorrection()
117     PetscCall(MatAssemblyEnd(shell_ctx->inv_smat, MAT_FINAL_ASSEMBLY));  in PCBDDCNullSpaceAssembleCorrection()
119   PetscCall(MatLUFactor(shell_ctx->inv_smat, NULL, NULL, NULL));  in PCBDDCNullSpaceAssembleCorrection()
120   PetscCall(MatSeqDenseInvertFactors_Private(shell_ctx->inv_smat));  in PCBDDCNullSpaceAssembleCorrection()
127 …for (i = 0; i < nz; i++) PetscCall(MatSetValue(shell_ctx->inv_smat, idxs[i], idxs[i], 0.0, INSERT_…  in PCBDDCNullSpaceAssembleCorrection()
129     PetscCall(MatAssemblyBegin(shell_ctx->inv_smat, MAT_FINAL_ASSEMBLY));  in PCBDDCNullSpaceAssembleCorrection()
130     PetscCall(MatAssemblyEnd(shell_ctx->inv_smat, MAT_FINAL_ASSEMBLY));  in PCBDDCNullSpaceAssembleCorrection()
135   PetscCall(MatCreateVecs(shell_ctx->inv_smat, &v, NULL));  in PCBDDCNullSpaceAssembleCorrection()