268 static PetscErrorCode DestroyCoarseProjection(Mat Pi)  in DestroyCoarseProjection()  argument
273   PetscCall(MatShellGetContext(Pi, &ctx));  in DestroyCoarseProjection()
282   PetscCall(MatShellSetContext(Pi, NULL));  in DestroyCoarseProjection()
286 static PetscErrorCode CoarseProjection(Mat Pi, Vec x, Vec y)  in CoarseProjection()  argument
291   PetscCall(MatShellGetContext(Pi, &ctx));  in CoarseProjection()
306 static PetscErrorCode CreateCoarseProjection(DM dmc, DM dmf, Mat *Pi)  in CreateCoarseProjection()  argument
326   PetscCall(MatCreateShell(PetscObjectComm((PetscObject)dmc), m, n, M, N, ctx, Pi));  in CreateCoarseProjection()
327   PetscCall(MatShellSetOperation(*Pi, MATOP_DESTROY, (PetscErrorCodeFn *)DestroyCoarseProjection));  in CreateCoarseProjection()
328   PetscCall(MatShellSetOperation(*Pi, MATOP_MULT, (PetscErrorCodeFn *)CoarseProjection));  in CreateCoarseProjection()
334   Mat Pi;   /* The L_2 stable projection to the DG coarse space */  member
346   PetscCall(MatDestroy(&ctx->Pi));  in DestroyQuasiInterpolator()
367   PetscCall(MatMult(ctx->Pi, x, ctx->tmpc));  in QuasiInterpolate()
424   PetscCall(CreateCoarseProjection(dmcdg, dmf, &ctx->Pi));  in CreateQuasiInterpolator()