/*
  DMPlex, for parallel unstructured distributed mesh problems.
*/
#pragma once

#include <petscsection.h>
#include <petscpartitioner.h>
#include <petscdm.h>
#include <petscdmplextypes.h>
#include <petscdt.h>
#include <petscfe.h>
#include <petscfv.h>
#include <petscsftypes.h>
#include <petscdmfield.h>
#include <petscviewer.h>

/* SUBMANSEC = DMPlex */

PETSC_EXTERN PetscErrorCode PetscPartitionerDMPlexPartition(PetscPartitioner, DM, PetscSection, PetscSection, IS *);

PETSC_EXTERN PetscErrorCode DMPlexBuildFromCellList(DM, PetscInt, PetscInt, PetscInt, const PetscInt[]);
PETSC_EXTERN PetscErrorCode DMPlexBuildFromCellListParallel(DM, PetscInt, PetscInt, PetscInt, PetscInt, const PetscInt[], PetscSF *, PetscInt **);
PETSC_EXTERN PetscErrorCode DMPlexBuildCoordinatesFromCellList(DM, PetscInt, const PetscReal[]);
PETSC_EXTERN PetscErrorCode DMPlexBuildCoordinatesFromCellListParallel(DM, PetscInt, PetscSF, const PetscReal[]);

PETSC_EXTERN PetscErrorCode DMPlexCreate(MPI_Comm, DM *);
PETSC_EXTERN PetscErrorCode DMPlexCreateCohesiveSubmesh(DM, PetscBool, const char[], PetscInt, DM *);
PETSC_EXTERN PetscErrorCode DMPlexCreateFromCellListPetsc(MPI_Comm, PetscInt, PetscInt, PetscInt, PetscInt, PetscBool, const PetscInt[], PetscInt, const PetscReal[], DM *);
PETSC_EXTERN PetscErrorCode DMPlexCreateFromCellListParallelPetsc(MPI_Comm, PetscInt, PetscInt, PetscInt, PetscInt, PetscInt, PetscBool, const PetscInt[], PetscInt, const PetscReal[], PetscSF *, PetscInt **, DM *);
PETSC_EXTERN PetscErrorCode DMPlexCreateFromDAG(DM, PetscInt, const PetscInt[], const PetscInt[], const PetscInt[], const PetscInt[], const PetscScalar[]);
PETSC_EXTERN PetscErrorCode DMPlexCreateReferenceCell(MPI_Comm, DMPolytopeType, DM *);
PETSC_EXTERN PetscErrorCode DMPlexSetOptionsPrefix(DM, const char[]);
PETSC_EXTERN PetscErrorCode DMPlexGetChart(DM, PetscInt *, PetscInt *);
PETSC_EXTERN PetscErrorCode DMPlexSetChart(DM, PetscInt, PetscInt);
PETSC_EXTERN PetscErrorCode DMPlexGetConeSize(DM, PetscInt, PetscInt *);
PETSC_EXTERN PetscErrorCode DMPlexSetConeSize(DM, PetscInt, PetscInt);
PETSC_EXTERN PetscErrorCode DMPlexGetCone(DM, PetscInt, const PetscInt *[]);
PETSC_EXTERN PetscErrorCode DMPlexGetConeTuple(DM, IS, PetscSection *, IS *);
PETSC_EXTERN PetscErrorCode DMPlexGetConeRecursive(DM, IS, PetscInt *, IS *[], PetscSection *[]);
PETSC_EXTERN PetscErrorCode DMPlexRestoreConeRecursive(DM, IS, PetscInt *, IS *[], PetscSection *[]);
PETSC_EXTERN PetscErrorCode DMPlexGetConeRecursiveVertices(DM, IS, IS *);
PETSC_EXTERN PetscErrorCode DMPlexGetOrientedCone(DM, PetscInt, const PetscInt *[], const PetscInt *[]);
PETSC_EXTERN PetscErrorCode DMPlexRestoreOrientedCone(DM, PetscInt, const PetscInt *[], const PetscInt *[]);
PETSC_EXTERN PetscErrorCode DMPlexSetCone(DM, PetscInt, const PetscInt[]);
PETSC_EXTERN PetscErrorCode DMPlexInsertCone(DM, PetscInt, PetscInt, PetscInt);
PETSC_EXTERN PetscErrorCode DMPlexInsertConeOrientation(DM, PetscInt, PetscInt, PetscInt);
PETSC_EXTERN PetscErrorCode DMPlexGetConeOrientation(DM, PetscInt, const PetscInt *[]);
PETSC_EXTERN PetscErrorCode DMPlexSetConeOrientation(DM, PetscInt, const PetscInt[]);
PETSC_EXTERN PetscErrorCode DMPlexGetSupportSize(DM, PetscInt, PetscInt *);
PETSC_EXTERN PetscErrorCode DMPlexSetSupportSize(DM, PetscInt, PetscInt);
PETSC_EXTERN PetscErrorCode DMPlexGetSupport(DM, PetscInt, const PetscInt *[]);
PETSC_EXTERN PetscErrorCode DMPlexSetSupport(DM, PetscInt, const PetscInt[]);
PETSC_EXTERN PetscErrorCode DMPlexInsertSupport(DM, PetscInt, PetscInt, PetscInt);
PETSC_EXTERN PetscErrorCode DMPlexGetConeSection(DM, PetscSection *);
PETSC_EXTERN PetscErrorCode DMPlexGetSupportSection(DM, PetscSection *);
PETSC_EXTERN PetscErrorCode DMPlexGetCones(DM, PetscInt *[]);
PETSC_EXTERN PetscErrorCode DMPlexGetConeOrientations(DM, PetscInt *[]);
PETSC_EXTERN PetscErrorCode DMPlexGetMaxSizes(DM, PetscInt *, PetscInt *);
PETSC_EXTERN PetscErrorCode DMPlexSymmetrize(DM);
PETSC_EXTERN PetscErrorCode DMPlexStratify(DM);
PETSC_EXTERN PetscErrorCode DMPlexEqual(DM, DM, PetscBool *);
PETSC_EXTERN PetscErrorCode DMPlexOrientPoint(DM, PetscInt, PetscInt);
PETSC_EXTERN PetscErrorCode DMPlexOrient(DM);
PETSC_EXTERN PetscErrorCode DMPlexPreallocateOperator(DM, PetscInt, PetscInt[], PetscInt[], PetscInt[], PetscInt[], Mat, PetscBool);
PETSC_EXTERN PetscErrorCode DMPlexGetPointLocal(DM, PetscInt, PetscInt *, PetscInt *);
PETSC_EXTERN PetscErrorCode DMPlexPointLocalRead(DM, PetscInt, const PetscScalar *, void *);
PETSC_EXTERN PetscErrorCode DMPlexPointLocalRef(DM, PetscInt, PetscScalar *, void *);
PETSC_EXTERN PetscErrorCode DMPlexGetPointLocalField(DM, PetscInt, PetscInt, PetscInt *, PetscInt *);
PETSC_EXTERN PetscErrorCode DMPlexPointLocalFieldRef(DM, PetscInt, PetscInt, PetscScalar *, void *);
PETSC_EXTERN PetscErrorCode DMPlexPointLocalFieldRead(DM, PetscInt, PetscInt, const PetscScalar *, void *);
PETSC_EXTERN PetscErrorCode DMPlexGetPointGlobal(DM, PetscInt, PetscInt *, PetscInt *);
PETSC_EXTERN PetscErrorCode DMPlexPointGlobalRead(DM, PetscInt, const PetscScalar *, const void *);
PETSC_EXTERN PetscErrorCode DMPlexPointGlobalRef(DM, PetscInt, PetscScalar *, void *);
PETSC_EXTERN PetscErrorCode DMPlexGetPointGlobalField(DM, PetscInt, PetscInt, PetscInt *, PetscInt *);
PETSC_EXTERN PetscErrorCode DMPlexPointGlobalFieldRef(DM, PetscInt, PetscInt, PetscScalar *, void *);
PETSC_EXTERN PetscErrorCode DMPlexPointGlobalFieldRead(DM, PetscInt, PetscInt, const PetscScalar *, void *);

/* Topological interpolation */
PETSC_EXTERN const char *const DMPlexInterpolatedFlags[];

/*E
   DMPlexInterpolatedFlag - Describes level of topological interpolatedness.

   Local or collective property depending on whether it is returned by `DMPlexIsInterpolated()` or `DMPlexIsInterpolatedCollective()`.

   Values:
+  `DMPLEX_INTERPOLATED_INVALID` - Uninitialized value (internal use only; never returned by `DMPlexIsInterpolated()` or `DMPlexIsInterpolatedCollective()`)
.  `DMPLEX_INTERPOLATED_NONE`    - Mesh is not interpolated
.  `DMPLEX_INTERPOLATED_PARTIAL` - Mesh is partially interpolated. This can e.g. mean `DMPLEX` with cells, faces and vertices but no edges represented,
                                   or a mesh with mixed cones (see `DMPlexStratify()` for an example)
.  `DMPLEX_INTERPOLATED_MIXED`   - Can be returned only by `DMPlexIsInterpolatedCollective()`, meaning that `DMPlexIsInterpolated()` returns different interpolatedness on different ranks
-  `DMPLEX_INTERPOLATED_FULL`    - Mesh is fully interpolated

   Level: intermediate

   Note:
   An interpolated `DMPLEX` means that edges (and faces for 3d meshes) are present in the `DMPLEX` data structures.

.seealso: `DMPLEX`, `DMPlexIsInterpolated()`, `DMPlexIsInterpolatedCollective()`, `DMPlexInterpolate()`, `DMPlexUninterpolate()`
E*/
typedef enum {
  DMPLEX_INTERPOLATED_INVALID = -1,
  DMPLEX_INTERPOLATED_NONE    = 0,
  DMPLEX_INTERPOLATED_PARTIAL,
  DMPLEX_INTERPOLATED_MIXED,
  DMPLEX_INTERPOLATED_FULL
} DMPlexInterpolatedFlag;

PETSC_EXTERN PetscErrorCode DMPlexInterpolate(DM, DM *);
PETSC_EXTERN PetscErrorCode DMPlexUninterpolate(DM, DM *);
PETSC_EXTERN PetscErrorCode DMPlexInterpolatePointSF(DM, PetscSF);
PETSC_EXTERN PetscErrorCode DMPlexIsInterpolated(DM, DMPlexInterpolatedFlag *);
PETSC_EXTERN PetscErrorCode DMPlexIsInterpolatedCollective(DM, DMPlexInterpolatedFlag *);

PETSC_EXTERN PetscErrorCode DMPlexFilter(DM, DMLabel, PetscInt, DM *);
PETSC_EXTERN PetscErrorCode DMPlexGetCellNumbering(DM, IS *);
PETSC_EXTERN PetscErrorCode DMPlexGetVertexNumbering(DM, IS *);
PETSC_EXTERN PetscErrorCode DMPlexCreatePointNumbering(DM, IS *);
PETSC_EXTERN PetscErrorCode DMPlexCreateRankField(DM, Vec *);
PETSC_EXTERN PetscErrorCode DMPlexCreateLabelField(DM, DMLabel, Vec *);

PETSC_EXTERN PetscErrorCode DMPlexGetDepth(DM, PetscInt *);
PETSC_EXTERN PetscErrorCode DMPlexGetDepthLabel(DM, DMLabel *);
PETSC_EXTERN PetscErrorCode DMPlexGetDepthStratum(DM, PetscInt, PetscInt *, PetscInt *);
PETSC_EXTERN PetscErrorCode DMPlexGetHeightStratum(DM, PetscInt, PetscInt *, PetscInt *);
PETSC_EXTERN PetscErrorCode DMPlexGetCellTypeStratum(DM, DMPolytopeType, PetscInt *, PetscInt *);
PETSC_EXTERN PetscErrorCode DMPlexGetPointDepth(DM, PetscInt, PetscInt *);
PETSC_EXTERN PetscErrorCode DMPlexGetPointHeight(DM, PetscInt, PetscInt *);
PETSC_EXTERN PetscErrorCode DMPlexGetCellTypeLabel(DM, DMLabel *);
PETSC_EXTERN PetscErrorCode DMPlexGetCellType(DM, PetscInt, DMPolytopeType *);
PETSC_EXTERN PetscErrorCode DMPlexSetCellType(DM, PetscInt, DMPolytopeType);
PETSC_EXTERN PetscErrorCode DMPlexComputeCellTypes(DM);
PETSC_EXTERN PetscErrorCode DMPlexInvertCell(DMPolytopeType, PetscInt[]);
PETSC_EXTERN PetscErrorCode DMPlexReorderCell(DM, PetscInt, PetscInt[]);

/* Topological Operations */
PETSC_EXTERN PetscErrorCode DMPlexGetMeet(DM, PetscInt, const PetscInt[], PetscInt *, const PetscInt **);
PETSC_EXTERN PetscErrorCode DMPlexGetFullMeet(DM, PetscInt, const PetscInt[], PetscInt *, const PetscInt **);
PETSC_EXTERN PetscErrorCode DMPlexRestoreMeet(DM, PetscInt, const PetscInt[], PetscInt *, const PetscInt **);
PETSC_EXTERN PetscErrorCode DMPlexGetJoin(DM, PetscInt, const PetscInt[], PetscInt *, const PetscInt **);
PETSC_EXTERN PetscErrorCode DMPlexGetFullJoin(DM, PetscInt, const PetscInt[], PetscInt *, const PetscInt **);
PETSC_EXTERN PetscErrorCode DMPlexRestoreJoin(DM, PetscInt, const PetscInt[], PetscInt *, const PetscInt **);
PETSC_EXTERN PetscErrorCode DMPlexGetTransitiveClosure(DM, PetscInt, PetscBool, PetscInt *, PetscInt *[]);
PETSC_EXTERN PetscErrorCode DMPlexRestoreTransitiveClosure(DM, PetscInt, PetscBool, PetscInt *, PetscInt *[]);
PETSC_EXTERN PetscErrorCode DMPlexGetCompressedClosure(DM, PetscSection, PetscInt, PetscInt, PetscInt *, PetscInt **, PetscSection *, IS *, const PetscInt **);
PETSC_EXTERN PetscErrorCode DMPlexRestoreCompressedClosure(DM, PetscSection, PetscInt, PetscInt *, PetscInt **, PetscSection *, IS *, const PetscInt **);

/*E
   DMPlexTPSType - Type of triply-periodic surface for a `DMPLEX`

   Values:
+  `DMPLEX_TPS_SCHWARZ_P` - Schwarz Primitive surface, defined by the equation cos(x) + cos(y) + cos(z) = 0.
-  `DMPLEX_TPS_GYROID`    - Gyroid surface, defined by the equation sin(x)cos(y) + sin(y)cos(z) + sin(z)cos(x) = 0

   Level: intermediate

.seealso: `DMPLEX`, `DMPlexCreateTPSMesh()`
E*/
typedef enum {
  DMPLEX_TPS_SCHWARZ_P,
  DMPLEX_TPS_GYROID
} DMPlexTPSType;
PETSC_EXTERN const char *const DMPlexTPSTypes[];

/* Mesh Generation */
PETSC_EXTERN PetscErrorCode DMPlexGenerate(DM, const char[], PetscBool, DM *);
PETSC_EXTERN PetscErrorCode DMPlexCopyCoordinates(DM, DM);
PETSC_EXTERN PetscErrorCode DMPlexCreateCoordinateSpace(DM, PetscInt, void (*)(PetscInt, PetscInt, PetscInt, const PetscInt[], const PetscInt[], const PetscScalar[], const PetscScalar[], const PetscScalar[], const PetscInt[], const PetscInt[], const PetscScalar[], const PetscScalar[], const PetscScalar[], PetscReal, const PetscReal[], PetscInt, const PetscScalar[], PetscScalar[]));
PETSC_EXTERN PetscErrorCode DMPlexCreateDoublet(MPI_Comm, PetscInt, PetscBool, PetscBool, PetscReal, DM *);
PETSC_EXTERN PetscErrorCode DMPlexCreateBoxMesh(MPI_Comm, PetscInt, PetscBool, const PetscInt[], const PetscReal[], const PetscReal[], const DMBoundaryType[], PetscBool, DM *);
PETSC_EXTERN PetscErrorCode DMPlexCreateBoxSurfaceMesh(MPI_Comm, PetscInt, const PetscInt[], const PetscReal[], const PetscReal[], PetscBool, DM *);
PETSC_EXTERN PetscErrorCode DMPlexCreateSphereMesh(MPI_Comm, PetscInt, PetscBool, PetscReal, DM *);
PETSC_EXTERN PetscErrorCode DMPlexCreateBallMesh(MPI_Comm, PetscInt, PetscReal, DM *);
PETSC_EXTERN PetscErrorCode DMPlexCreateHexCylinderMesh(MPI_Comm, DMBoundaryType, DM *);
PETSC_EXTERN PetscErrorCode DMPlexCreateTPSMesh(MPI_Comm, DMPlexTPSType, const PetscInt[], const DMBoundaryType[], PetscBool, PetscInt, PetscInt, PetscReal, DM *);
PETSC_EXTERN PetscErrorCode DMPlexCreateWedgeCylinderMesh(MPI_Comm, PetscInt, PetscBool, DM *);
PETSC_EXTERN PetscErrorCode DMPlexCreateWedgeBoxMesh(MPI_Comm, const PetscInt[], const PetscReal[], const PetscReal[], const DMBoundaryType[], PetscBool, PetscBool, DM *);
PETSC_EXTERN PetscErrorCode DMPlexCreateHypercubicMesh(MPI_Comm, PetscInt, const PetscInt[], const PetscReal[], const PetscReal[], DM *);
PETSC_EXTERN PetscErrorCode DMPlexExtrude(DM, PetscInt, PetscReal, PetscBool, PetscBool, PetscBool, const PetscReal[], const PetscReal[], DM *);
PETSC_EXTERN PetscErrorCode DMPlexInflateToGeomModel(DM);

PETSC_EXTERN PetscErrorCode DMPlexSetIsoperiodicFaceSF(DM, PetscSF);
PETSC_EXTERN PetscErrorCode DMPlexGetIsoperiodicFaceSF(DM, PetscSF *);
PETSC_EXTERN PetscErrorCode DMPlexSetIsoperiodicFaceTransform(DM, const PetscScalar[]);

PETSC_EXTERN PetscErrorCode DMPlexCheck(DM);
PETSC_EXTERN PetscErrorCode DMPlexCheckSymmetry(DM);
PETSC_EXTERN PetscErrorCode DMPlexCheckSkeleton(DM, PetscInt);
PETSC_EXTERN PetscErrorCode DMPlexCheckFaces(DM, PetscInt);
PETSC_EXTERN PetscErrorCode DMPlexCheckGeometry(DM);
PETSC_EXTERN PetscErrorCode DMPlexCheckPointSF(DM, PetscSF, PetscBool);
PETSC_EXTERN PetscErrorCode DMPlexCheckInterfaceCones(DM);
PETSC_EXTERN PetscErrorCode DMPlexCheckCellShape(DM, PetscBool, PetscReal);
PETSC_EXTERN PetscErrorCode DMPlexComputeOrthogonalQuality(DM, PetscFV, PetscReal, Vec *, DMLabel *);

PETSC_EXTERN PetscErrorCode DMPlexTriangleSetOptions(DM, const char *);
PETSC_EXTERN PetscErrorCode DMPlexTetgenSetOptions(DM, const char *);

PETSC_EXTERN PetscErrorCode DMPlexCreateFromFile(MPI_Comm, const char[], const char[], PetscBool, DM *);
PETSC_EXTERN PetscErrorCode DMPlexCreateExodus(MPI_Comm, PetscInt, PetscBool, DM *);
PETSC_EXTERN PetscErrorCode DMPlexCreateExodusFromFile(MPI_Comm, const char[], PetscBool, DM *);
PETSC_EXTERN PetscErrorCode DMPlexCreateCGNS(MPI_Comm, PetscInt, PetscBool, DM *);
PETSC_EXTERN PetscErrorCode DMPlexCreateCGNSFromFile(MPI_Comm, const char[], PetscBool, DM *);
PETSC_EXTERN PetscErrorCode DMPlexCreateGmsh(MPI_Comm, PetscViewer, PetscBool, DM *);
PETSC_EXTERN PetscErrorCode DMPlexCreateGmshFromFile(MPI_Comm, const char[], PetscBool, DM *);
PETSC_EXTERN PetscErrorCode DMPlexCreateFluent(MPI_Comm, PetscViewer, PetscBool, DM *);
PETSC_EXTERN PetscErrorCode DMPlexCreateFluentFromFile(MPI_Comm, const char[], PetscBool, DM *);
PETSC_EXTERN PetscErrorCode DMPlexCreateMedFromFile(MPI_Comm, const char[], PetscBool, DM *);
PETSC_EXTERN PetscErrorCode DMPlexCreatePLYFromFile(MPI_Comm, const char[], PetscBool, DM *);
PETSC_EXTERN PetscErrorCode DMPlexCreateEGADSFromFile(MPI_Comm, const char[], DM *);
PETSC_EXTERN PetscErrorCode DMPlexCreateEGADSLiteFromFile(MPI_Comm, const char[], DM *);

PETSC_EXTERN PetscErrorCode PetscViewerExodusIIOpen(MPI_Comm comm, const char name[], PetscFileMode type, PetscViewer *exo);
PETSC_EXTERN PetscErrorCode PetscViewerExodusIIGetId(PetscViewer, int *);
PETSC_EXTERN PetscErrorCode PetscViewerExodusIISetOrder(PetscViewer, PetscInt);
PETSC_EXTERN PetscErrorCode PetscViewerExodusIIGetOrder(PetscViewer, PetscInt *);

/* Mesh Partitioning and Distribution */
#define DMPLEX_OVERLAP_MANUAL -1

PETSC_EXTERN PetscErrorCode DMPlexCreateNeighborCSR(DM, PetscInt, PetscInt *, PetscInt **, PetscInt **);
PETSC_EXTERN PetscErrorCode DMPlexGetPartitioner(DM, PetscPartitioner *);
PETSC_EXTERN PetscErrorCode DMPlexSetPartitioner(DM, PetscPartitioner);
PETSC_EXTERN PetscErrorCode DMPlexCreatePartitionerGraph(DM, PetscInt, PetscInt *, PetscInt **, PetscInt **, IS *);
PETSC_EXTERN PetscErrorCode DMPlexPartitionLabelInvert(DM, DMLabel, PetscSF, DMLabel);
PETSC_EXTERN PetscErrorCode DMPlexPartitionLabelClosure(DM, DMLabel);
PETSC_EXTERN PetscErrorCode DMPlexPartitionLabelAdjacency(DM, DMLabel);
PETSC_EXTERN PetscErrorCode DMPlexPartitionLabelPropagate(DM, DMLabel);
PETSC_EXTERN PetscErrorCode DMPlexPartitionLabelCreateSF(DM, DMLabel, PetscSF *);
PETSC_EXTERN PetscErrorCode DMPlexSetPartitionBalance(DM, PetscBool);
PETSC_EXTERN PetscErrorCode DMPlexGetPartitionBalance(DM, PetscBool *);
PETSC_EXTERN PetscErrorCode DMPlexIsDistributed(DM, PetscBool *);
PETSC_EXTERN PetscErrorCode DMPlexDistribute(DM, PetscInt, PetscSF *, DM *);
PETSC_EXTERN PetscErrorCode DMPlexDistributeOverlap(DM, PetscInt, PetscSF *, DM *);
PETSC_EXTERN PetscErrorCode DMPlexGetOverlap(DM, PetscInt *);
PETSC_EXTERN PetscErrorCode DMPlexSetOverlap(DM, DM, PetscInt);
PETSC_EXTERN PetscErrorCode DMPlexDistributeGetDefault(DM, PetscBool *);
PETSC_EXTERN PetscErrorCode DMPlexDistributeSetDefault(DM, PetscBool);
PETSC_EXTERN PetscErrorCode DMPlexDistributeField(DM, PetscSF, PetscSection, Vec, PetscSection, Vec);
PETSC_EXTERN PetscErrorCode DMPlexDistributeFieldIS(DM, PetscSF, PetscSection, IS, PetscSection, IS *);
PETSC_EXTERN PetscErrorCode DMPlexDistributeData(DM, PetscSF, PetscSection, MPI_Datatype, void *, PetscSection, void **) PETSC_ATTRIBUTE_MPI_POINTER_WITH_TYPE(5, 4) PETSC_ATTRIBUTE_MPI_POINTER_WITH_TYPE(7, 4);
PETSC_EXTERN PetscErrorCode DMPlexRebalanceSharedPoints(DM, PetscInt, PetscBool, PetscBool, PetscBool *);
PETSC_EXTERN PetscErrorCode DMPlexMigrate(DM, PetscSF, DM);
PETSC_EXTERN PetscErrorCode DMPlexGetGatherDM(DM, PetscSF *, DM *);
PETSC_EXTERN PetscErrorCode DMPlexGetRedundantDM(DM, PetscSF *, DM *);
PETSC_EXTERN PetscErrorCode DMPlexSetAdjacencyUser(DM, PetscErrorCode (*)(DM, PetscInt, PetscInt *, PetscInt[], void *), void *);
PETSC_EXTERN PetscErrorCode DMPlexGetAdjacencyUser(DM, PetscErrorCode (**)(DM, PetscInt, PetscInt *, PetscInt[], void *), void **);
PETSC_EXTERN PetscErrorCode DMPlexSetAdjacencyUseAnchors(DM, PetscBool);
PETSC_EXTERN PetscErrorCode DMPlexGetAdjacencyUseAnchors(DM, PetscBool *);
PETSC_EXTERN PetscErrorCode DMPlexGetAdjacency(DM, PetscInt, PetscInt *, PetscInt *[]);
PETSC_EXTERN PetscErrorCode DMPlexSetMigrationSF(DM, PetscSF);
PETSC_EXTERN PetscErrorCode DMPlexGetMigrationSF(DM, PetscSF *);
PETSC_EXTERN PetscErrorCode DMPlexDistributionSetName(DM, const char[]);
PETSC_EXTERN PetscErrorCode DMPlexDistributionGetName(DM, const char *[]);

/*E
   DMPlexReorderDefaultFlag - Flag indicating whether the `DMPLEX` should be reordered by default

   Values:
+  `DMPLEX_REORDER_DEFAULT_NOTSET` - Flag not set.
.  `DMPLEX_REORDER_DEFAULT_FALSE`  - Do not reorder by default.
-  `DMPLEX_REORDER_DEFAULT_TRUE`   - Reorder by default.

   Level: intermediate

   Developer Note:
   Could be replaced with `PETSC_BOOL3`

.seealso: `DMPlexReorderSetDefault()`, `DMPlexReorderGetDefault()`, `DMPlexGetOrdering()`, `DMPlexPermute()`
E*/
typedef enum {
  DMPLEX_REORDER_DEFAULT_NOTSET = -1,
  DMPLEX_REORDER_DEFAULT_FALSE  = 0,
  DMPLEX_REORDER_DEFAULT_TRUE
} DMPlexReorderDefaultFlag;
PETSC_EXTERN PetscErrorCode DMPlexGetOrdering(DM, MatOrderingType, DMLabel, IS *);
PETSC_EXTERN PetscErrorCode DMPlexGetOrdering1D(DM, IS *);
PETSC_EXTERN PetscErrorCode DMPlexPermute(DM, IS, DM *);
PETSC_EXTERN PetscErrorCode DMPlexReorderGetDefault(DM, DMPlexReorderDefaultFlag *);
PETSC_EXTERN PetscErrorCode DMPlexReorderSetDefault(DM, DMPlexReorderDefaultFlag);

PETSC_EXTERN PetscErrorCode DMPlexCreateProcessSF(DM, PetscSF, IS *, PetscSF *);
PETSC_EXTERN PetscErrorCode DMPlexCreateTwoSidedProcessSF(DM, PetscSF, PetscSection, IS, PetscSection, IS, IS *, PetscSF *);
PETSC_EXTERN PetscErrorCode DMPlexDistributeOwnership(DM, PetscSection, IS *, PetscSection, IS *);
PETSC_EXTERN PetscErrorCode DMPlexCreatePointSF(DM, PetscSF, PetscBool, PetscSF *);
PETSC_EXTERN PetscErrorCode DMPlexCreateOverlapLabel(DM, PetscInt, PetscSection, IS, PetscSection, IS, DMLabel *);
PETSC_EXTERN PetscErrorCode DMPlexCreateOverlapLabelFromLabels(DM, PetscInt, const DMLabel[], const PetscInt[], PetscInt, const DMLabel[], const PetscInt[], PetscSection, IS, PetscSection, IS, DMLabel *);
PETSC_EXTERN PetscErrorCode DMPlexCreateOverlapMigrationSF(DM, PetscSF, PetscSF *);
PETSC_EXTERN PetscErrorCode DMPlexStratifyMigrationSF(DM, PetscSF, PetscSF *);

/* Submesh Support */
PETSC_EXTERN PetscErrorCode DMPlexCreateSubmesh(DM, DMLabel, PetscInt, PetscBool, DM *);
PETSC_EXTERN PetscErrorCode DMPlexCreateHybridMesh(DM, DMLabel, DMLabel, PetscInt, DMLabel *, DMLabel *, DM *, DM *);
PETSC_EXTERN PetscErrorCode DMPlexGetSubpointMap(DM, DMLabel *);
PETSC_EXTERN PetscErrorCode DMPlexSetSubpointMap(DM, DMLabel);
PETSC_EXTERN PetscErrorCode DMPlexGetSubpointIS(DM, IS *);

PETSC_EXTERN PetscErrorCode DMGetEnclosureRelation(DM, DM, DMEnclosureType *);
PETSC_EXTERN PetscErrorCode DMGetEnclosurePoint(DM, DM, DMEnclosureType, PetscInt, PetscInt *);

PETSC_EXTERN PetscErrorCode DMPlexLabelComplete(DM, DMLabel);
PETSC_EXTERN PetscErrorCode DMPlexLabelCohesiveComplete(DM, DMLabel, DMLabel, PetscInt, PetscBool, DM);
PETSC_EXTERN PetscErrorCode DMPlexLabelAddCells(DM, DMLabel);
PETSC_EXTERN PetscErrorCode DMPlexLabelAddFaceCells(DM, DMLabel);
PETSC_EXTERN PetscErrorCode DMPlexLabelClearCells(DM, DMLabel);

PETSC_EXTERN PetscErrorCode DMPlexGetRefinementLimit(DM, PetscReal *);
PETSC_EXTERN PetscErrorCode DMPlexSetRefinementLimit(DM, PetscReal);
PETSC_EXTERN PetscErrorCode DMPlexGetRefinementUniform(DM, PetscBool *);
PETSC_EXTERN PetscErrorCode DMPlexSetRefinementUniform(DM, PetscBool);
PETSC_EXTERN PetscErrorCode DMPlexGetRefinementFunction(DM, PetscErrorCode (**)(const PetscReal[], PetscReal *));
PETSC_EXTERN PetscErrorCode DMPlexSetRefinementFunction(DM, PetscErrorCode (*)(const PetscReal[], PetscReal *));
PETSC_EXTERN PetscErrorCode DMPlexCreateCoarsePointIS(DM, IS *);
PETSC_EXTERN PetscErrorCode DMPlexGetRegularRefinement(DM, PetscBool *);
PETSC_EXTERN PetscErrorCode DMPlexSetRegularRefinement(DM, PetscBool);

/* Support for cell-vertex meshes */
PETSC_EXTERN PetscErrorCode DMPlexGetNumFaceVertices(DM, PetscInt, PetscInt, PetscInt *);
PETSC_EXTERN PetscErrorCode DMPlexGetOrientedFace(DM, PetscInt, PetscInt, const PetscInt[], PetscInt, PetscInt[], PetscInt[], PetscInt[], PetscBool *);

/* Geometry Support */
PETSC_EXTERN PetscErrorCode DMPlexGetMinRadius(DM, PetscReal *);
PETSC_EXTERN PetscErrorCode DMPlexSetMinRadius(DM, PetscReal);
PETSC_EXTERN PetscErrorCode DMPlexComputeProjection2Dto1D(PetscScalar[], PetscReal[]);
PETSC_EXTERN PetscErrorCode DMPlexComputeProjection3Dto1D(PetscScalar[], PetscReal[]);
PETSC_EXTERN PetscErrorCode DMPlexComputeProjection3Dto2D(PetscInt, PetscScalar[], PetscReal[]);

/* Point Location */
typedef struct _PetscGridHash *PetscGridHash;
PETSC_EXTERN PetscErrorCode    PetscGridHashCreate(MPI_Comm, PetscInt, const PetscScalar[], PetscGridHash *);
PETSC_EXTERN PetscErrorCode    PetscGridHashEnlarge(PetscGridHash, const PetscScalar[]);
PETSC_EXTERN PetscErrorCode    PetscGridHashSetGrid(PetscGridHash, const PetscInt[], const PetscReal[]);
PETSC_EXTERN PetscErrorCode    PetscGridHashGetEnclosingBox(PetscGridHash, PetscInt, const PetscScalar[], PetscInt[], PetscInt[]);
PETSC_EXTERN PetscErrorCode    PetscGridHashDestroy(PetscGridHash *);
PETSC_EXTERN PetscErrorCode    DMPlexFindVertices(DM, Vec, PetscReal, IS *);

/* FVM Support */
PETSC_EXTERN PetscErrorCode DMPlexComputeCellGeometryFVM(DM, PetscInt, PetscReal *, PetscReal[], PetscReal[]);
PETSC_EXTERN PetscErrorCode DMPlexComputeGeometryFVM(DM, Vec *, Vec *);
PETSC_EXTERN PetscErrorCode DMPlexComputeGradientFVM(DM, PetscFV, Vec, Vec, DM *);
PETSC_EXTERN PetscErrorCode DMPlexGetDataFVM(DM, PetscFV, Vec *, Vec *, DM *);

/* FEM Support */
PETSC_EXTERN PetscErrorCode DMPlexGetGeometryFVM(DM, Vec *, Vec *, PetscReal *);
PETSC_EXTERN PetscErrorCode DMPlexGetGradientDM(DM, PetscFV, DM *);
PETSC_EXTERN PetscErrorCode DMPlexInsertBoundaryValues(DM, PetscBool, Vec, PetscReal, Vec, Vec, Vec);
PETSC_EXTERN PetscErrorCode DMPlexInsertTimeDerivativeBoundaryValues(DM, PetscBool, Vec, PetscReal, Vec, Vec, Vec);
PETSC_EXTERN PetscErrorCode DMPlexInsertBoundaryValuesEssential(DM, PetscReal, PetscInt, PetscInt, const PetscInt[], DMLabel, PetscInt, const PetscInt[], PetscErrorCode (*)(PetscInt, PetscReal, const PetscReal[], PetscInt, PetscScalar *, void *), void *, Vec);
PETSC_EXTERN PetscErrorCode DMPlexInsertBoundaryValuesEssentialField(DM, PetscReal, Vec, PetscInt, PetscInt, const PetscInt[], DMLabel, PetscInt, const PetscInt[], void (*)(PetscInt, PetscInt, PetscInt, const PetscInt[], const PetscInt[], const PetscScalar[], const PetscScalar[], const PetscScalar[], const PetscInt[], const PetscInt[], const PetscScalar[], const PetscScalar[], const PetscScalar[], PetscReal, const PetscReal[], PetscInt, const PetscScalar[], PetscScalar[]), void *, Vec);
PETSC_EXTERN PetscErrorCode DMPlexInsertBoundaryValuesEssentialBdField(DM, PetscReal, Vec, PetscInt, PetscInt, const PetscInt[], DMLabel, PetscInt, const PetscInt[], void (*)(PetscInt, PetscInt, PetscInt, const PetscInt[], const PetscInt[], const PetscScalar[], const PetscScalar[], const PetscScalar[], const PetscInt[], const PetscInt[], const PetscScalar[], const PetscScalar[], const PetscScalar[], PetscReal, const PetscReal[], const PetscReal[], PetscInt, const PetscScalar[], PetscScalar[]), void *, Vec);
PETSC_EXTERN PetscErrorCode DMPlexInsertBoundaryValuesRiemann(DM, PetscReal, Vec, Vec, Vec, PetscInt, PetscInt, const PetscInt[], DMLabel, PetscInt, const PetscInt[], PetscErrorCode (*)(PetscReal, const PetscReal *, const PetscReal *, const PetscScalar *, PetscScalar *, void *), void *, Vec);
PETSC_EXTERN PetscErrorCode DMPlexMarkBoundaryFaces(DM, PetscInt, DMLabel);

PETSC_EXTERN PetscErrorCode DMPlexCreateSection(DM, DMLabel[], const PetscInt[], const PetscInt[], PetscInt, const PetscInt[], const IS[], const IS[], IS, PetscSection *);
PETSC_EXTERN PetscErrorCode DMPlexGetSubdomainSection(DM, PetscSection *);

PETSC_EXTERN PetscErrorCode DMPlexComputeCellGeometryAffineFEM(DM, PetscInt, PetscReal *, PetscReal *, PetscReal *, PetscReal *);
PETSC_EXTERN PetscErrorCode DMPlexComputeCellGeometryFEM(DM, PetscInt, PetscQuadrature, PetscReal *, PetscReal *, PetscReal *, PetscReal *);
PETSC_EXTERN PetscErrorCode DMPlexGetCellCoordinates(DM, PetscInt, PetscBool *, PetscInt *, const PetscScalar *[], PetscScalar *[]);
PETSC_EXTERN PetscErrorCode DMPlexRestoreCellCoordinates(DM, PetscInt, PetscBool *, PetscInt *, const PetscScalar *[], PetscScalar *[]);
PETSC_EXTERN PetscErrorCode DMPlexCoordinatesToReference(DM, PetscInt, PetscInt, const PetscReal[], PetscReal[]);
PETSC_EXTERN PetscErrorCode DMPlexReferenceToCoordinates(DM, PetscInt, PetscInt, const PetscReal[], PetscReal[]);
PETSC_EXTERN PetscErrorCode DMPlexShearGeometry(DM, DMDirection, PetscReal[]);
PETSC_EXTERN PetscErrorCode DMPlexRemapGeometry(DM, PetscReal, void (*)(PetscInt, PetscInt, PetscInt, const PetscInt[], const PetscInt[], const PetscScalar[], const PetscScalar[], const PetscScalar[], const PetscInt[], const PetscInt[], const PetscScalar[], const PetscScalar[], const PetscScalar[], PetscReal, const PetscReal[], PetscInt, const PetscScalar[], PetscScalar[]));

PETSC_EXTERN PetscErrorCode DMPlexVecGetClosure(DM, PetscSection, Vec, PetscInt, PetscInt *, PetscScalar *[]);
PETSC_EXTERN PetscErrorCode DMPlexVecRestoreClosure(DM, PetscSection, Vec, PetscInt, PetscInt *, PetscScalar *[]);
PETSC_EXTERN PetscErrorCode DMPlexVecSetClosure(DM, PetscSection, Vec, PetscInt, const PetscScalar[], InsertMode);
PETSC_EXTERN PetscErrorCode DMPlexMatSetClosure(DM, PetscSection, PetscSection, Mat, PetscInt, const PetscScalar[], InsertMode);
PETSC_EXTERN PetscErrorCode DMPlexMatSetClosureGeneral(DM, PetscSection, PetscSection, PetscBool, DM, PetscSection, PetscSection, PetscBool, Mat, PetscInt, const PetscScalar[], InsertMode);
PETSC_EXTERN PetscErrorCode DMPlexGetClosureIndices(DM, PetscSection, PetscSection, PetscInt, PetscBool, PetscInt *, PetscInt *[], PetscInt *, PetscScalar *[]);
PETSC_EXTERN PetscErrorCode DMPlexRestoreClosureIndices(DM, PetscSection, PetscSection, PetscInt, PetscBool, PetscInt *, PetscInt *[], PetscInt *, PetscScalar *[]);
PETSC_EXTERN PetscErrorCode DMPlexMatSetClosureRefined(DM, PetscSection, PetscSection, DM, PetscSection, PetscSection, Mat, PetscInt, const PetscScalar[], InsertMode);
PETSC_EXTERN PetscErrorCode DMPlexMatGetClosureIndicesRefined(DM, PetscSection, PetscSection, DM, PetscSection, PetscSection, PetscInt, PetscInt[], PetscInt[]);
PETSC_EXTERN PetscErrorCode DMPlexCreateClosureIndex(DM, PetscSection);
PETSC_EXTERN PetscErrorCode DMPlexSetClosurePermutationTensor(DM, PetscInt, PetscSection);

PETSC_EXTERN PetscErrorCode DMPlexConstructGhostCells(DM, const char[], PetscInt *, DM *);
PETSC_EXTERN PetscErrorCode DMPlexConstructCohesiveCells(DM, DMLabel, DMLabel, DM *);
PETSC_EXTERN PetscErrorCode DMPlexReorderCohesiveSupports(DM);

PETSC_EXTERN PetscErrorCode DMPlexGetVTKCellHeight(DM, PetscInt *);
PETSC_EXTERN PetscErrorCode DMPlexSetVTKCellHeight(DM, PetscInt);
PETSC_EXTERN PetscErrorCode DMPlexVTKWriteAll(PetscObject, PetscViewer);
PETSC_EXTERN PetscErrorCode DMPlexGetSimplexOrBoxCells(DM, PetscInt, PetscInt *, PetscInt *);
PETSC_EXTERN PetscErrorCode DMPlexIsSimplex(DM, PetscBool *);

PETSC_EXTERN PetscErrorCode DMPlexGetCellFields(DM, IS, Vec, Vec, Vec, PetscScalar **, PetscScalar **, PetscScalar **);
PETSC_EXTERN PetscErrorCode DMPlexRestoreCellFields(DM, IS, Vec, Vec, Vec, PetscScalar **, PetscScalar **, PetscScalar **);
PETSC_EXTERN PetscErrorCode DMPlexGetFaceFields(DM, PetscInt, PetscInt, Vec, Vec, Vec, Vec, Vec, PetscInt *, PetscScalar **, PetscScalar **);
PETSC_EXTERN PetscErrorCode DMPlexRestoreFaceFields(DM, PetscInt, PetscInt, Vec, Vec, Vec, Vec, Vec, PetscInt *, PetscScalar **, PetscScalar **);
PETSC_EXTERN PetscErrorCode DMPlexGetFaceGeometry(DM, PetscInt, PetscInt, Vec, Vec, PetscInt *, PetscFVFaceGeom **, PetscReal **);
PETSC_EXTERN PetscErrorCode DMPlexRestoreFaceGeometry(DM, PetscInt, PetscInt, Vec, Vec, PetscInt *, PetscFVFaceGeom **, PetscReal **);

PETSC_EXTERN PetscErrorCode DMPlexGetScale(DM, PetscUnit, PetscReal *);
PETSC_EXTERN PetscErrorCode DMPlexSetScale(DM, PetscUnit, PetscReal);

typedef struct {
  DM    dm;
  Vec   u; /* The base vector for the Jacobian action J(u) x */
  Mat   J; /* Preconditioner for testing */
  void *user;
} JacActionCtx;

PETSC_EXTERN PetscErrorCode DMPlexSetMaxProjectionHeight(DM, PetscInt);
PETSC_EXTERN PetscErrorCode DMPlexGetMaxProjectionHeight(DM, PetscInt *);
PETSC_EXTERN PetscErrorCode DMPlexGetActivePoint(DM, PetscInt *);
PETSC_EXTERN PetscErrorCode DMPlexSetActivePoint(DM, PetscInt);
PETSC_EXTERN PetscErrorCode DMPlexComputeL2DiffLocal(DM, PetscReal, PetscErrorCode (**)(PetscInt, PetscReal, const PetscReal[], PetscInt, PetscScalar *, void *), void **, Vec, PetscReal *);
PETSC_EXTERN PetscErrorCode DMPlexComputeL2FieldDiff(DM, PetscReal, PetscErrorCode (**)(PetscInt, PetscReal, const PetscReal[], PetscInt, PetscScalar *, void *), void **, Vec, PetscReal[]);
PETSC_EXTERN PetscErrorCode DMPlexComputeL2DiffVec(DM, PetscReal, PetscErrorCode (**)(PetscInt, PetscReal, const PetscReal[], PetscInt, PetscScalar *, void *), void **, Vec, Vec);
PETSC_EXTERN PetscErrorCode DMPlexComputeCellwiseIntegralFEM(DM, Vec, Vec, void *);
PETSC_EXTERN PetscErrorCode DMPlexComputeIntegralFEM(DM, Vec, PetscScalar *, void *);
PETSC_EXTERN PetscErrorCode DMPlexComputeBdIntegral(DM, Vec, DMLabel, PetscInt, const PetscInt[], void (*)(PetscInt, PetscInt, PetscInt, const PetscInt[], const PetscInt[], const PetscScalar[], const PetscScalar[], const PetscScalar[], const PetscInt[], const PetscInt[], const PetscScalar[], const PetscScalar[], const PetscScalar[], PetscReal, const PetscReal[], const PetscReal[], PetscInt, const PetscScalar[], PetscScalar[]), PetscScalar *, void *);
PETSC_EXTERN PetscErrorCode DMPlexComputeInterpolatorNested(DM, DM, PetscBool, Mat, void *);
PETSC_EXTERN PetscErrorCode DMPlexComputeInterpolatorGeneral(DM, DM, Mat, void *);
PETSC_EXTERN PetscErrorCode DMPlexComputeClementInterpolant(DM, Vec, Vec);
PETSC_EXTERN PetscErrorCode DMPlexComputeGradientClementInterpolant(DM, Vec, Vec);
PETSC_EXTERN PetscErrorCode DMPlexComputeInjectorFEM(DM, DM, VecScatter *, void *);
PETSC_EXTERN PetscErrorCode DMPlexComputeMassMatrixNested(DM, DM, Mat, void *);
PETSC_EXTERN PetscErrorCode DMPlexComputeMassMatrixGeneral(DM, DM, Mat, void *);

PETSC_EXTERN PetscErrorCode DMPlexCreateRigidBody(DM, PetscInt, MatNullSpace *);
PETSC_EXTERN PetscErrorCode DMPlexCreateRigidBodies(DM, PetscInt, DMLabel, const PetscInt[], const PetscInt[], MatNullSpace *);

PETSC_EXTERN PetscErrorCode DMPlexSetSNESLocalFEM(DM, void *, void *, void *);
PETSC_EXTERN PetscErrorCode DMPlexSNESComputeBoundaryFEM(DM, Vec, void *);
PETSC_EXTERN PetscErrorCode DMPlexSNESComputeResidualFEM(DM, Vec, Vec, void *);
PETSC_EXTERN PetscErrorCode DMPlexSNESComputeResidualCEED(DM, Vec, Vec, void *);
PETSC_EXTERN PetscErrorCode DMPlexSNESComputeResidualDS(DM, Vec, Vec, void *);
PETSC_EXTERN PetscErrorCode DMPlexSNESComputeJacobianFEM(DM, Vec, Mat, Mat, void *);
PETSC_EXTERN PetscErrorCode DMPlexComputeBdResidualSingle(DM, PetscReal, PetscWeakForm, PetscFormKey, Vec, Vec, Vec);
PETSC_EXTERN PetscErrorCode DMPlexComputeBdJacobianSingle(DM, PetscReal, PetscWeakForm, DMLabel, PetscInt, const PetscInt[], PetscInt, Vec, Vec, PetscReal, Mat, Mat);

PETSC_EXTERN PetscErrorCode DMPlexTSComputeBoundary(DM, PetscReal, Vec, Vec, void *);
PETSC_EXTERN PetscErrorCode DMPlexTSComputeRHSFunctionFVM(DM, PetscReal, Vec, Vec, void *);
PETSC_EXTERN PetscErrorCode DMPlexTSComputeIFunctionFEM(DM, PetscReal, Vec, Vec, Vec, void *);
PETSC_EXTERN PetscErrorCode DMPlexTSComputeIJacobianFEM(DM, PetscReal, Vec, Vec, PetscReal, Mat, Mat, void *);
PETSC_EXTERN PetscErrorCode DMPlexTSComputeRHSFunctionFEM(DM, PetscReal, Vec, Vec, void *);

PETSC_EXTERN PetscErrorCode DMPlexReconstructGradientsFVM(DM, Vec, Vec);

PETSC_EXTERN PetscErrorCode DMPlexGetUseCeed(DM, PetscBool *);
PETSC_EXTERN PetscErrorCode DMPlexSetUseCeed(DM, PetscBool);
PETSC_EXTERN PetscErrorCode DMPlexGetUseMatClosurePermutation(DM, PetscBool *);
PETSC_EXTERN PetscErrorCode DMPlexSetUseMatClosurePermutation(DM, PetscBool);

/* anchors */
PETSC_EXTERN PetscErrorCode DMPlexGetAnchors(DM, PetscSection *, IS *);
PETSC_EXTERN PetscErrorCode DMPlexSetAnchors(DM, PetscSection, IS);
/* tree */
PETSC_EXTERN PetscErrorCode DMPlexSetReferenceTree(DM, DM);
PETSC_EXTERN PetscErrorCode DMPlexGetReferenceTree(DM, DM *);
PETSC_EXTERN PetscErrorCode DMPlexReferenceTreeGetChildSymmetry(DM, PetscInt, PetscInt, PetscInt, PetscInt, PetscInt, PetscInt *, PetscInt *);
PETSC_EXTERN PetscErrorCode DMPlexCreateDefaultReferenceTree(MPI_Comm, PetscInt, PetscBool, DM *);
PETSC_EXTERN PetscErrorCode DMPlexSetTree(DM, PetscSection, PetscInt[], PetscInt[]);
PETSC_EXTERN PetscErrorCode DMPlexGetTree(DM, PetscSection *, PetscInt *[], PetscInt *[], PetscSection *, PetscInt *[]);
PETSC_EXTERN PetscErrorCode DMPlexGetTreeParent(DM, PetscInt, PetscInt *, PetscInt *);
PETSC_EXTERN PetscErrorCode DMPlexGetTreeChildren(DM, PetscInt, PetscInt *, const PetscInt *[]);
PETSC_EXTERN PetscErrorCode DMPlexTreeRefineCell(DM, PetscInt, DM *);
PETSC_EXTERN PetscErrorCode DMPlexComputeInjectorReferenceTree(DM, Mat *);
PETSC_EXTERN PetscErrorCode DMPlexTransferVecTree(DM, Vec, DM, Vec, PetscSF, PetscSF, PetscInt *, PetscInt *, PetscBool, PetscReal);

PETSC_EXTERN PetscErrorCode DMPlexMonitorThroughput(DM, void *);

/* natural order */
PETSC_EXTERN PetscErrorCode DMPlexCreateGlobalToNaturalSF(DM, PetscSection, PetscSF, PetscSF *);
PETSC_EXTERN PetscErrorCode DMPlexSetGlobalToNaturalSF(DM, PetscSF);
PETSC_EXTERN PetscErrorCode DMPlexGetGlobalToNaturalSF(DM, PetscSF *);
PETSC_EXTERN PetscErrorCode DMPlexGlobalToNaturalBegin(DM, Vec, Vec);
PETSC_EXTERN PetscErrorCode DMPlexGlobalToNaturalEnd(DM, Vec, Vec);
PETSC_EXTERN PetscErrorCode DMPlexNaturalToGlobalBegin(DM, Vec, Vec);
PETSC_EXTERN PetscErrorCode DMPlexNaturalToGlobalEnd(DM, Vec, Vec);
PETSC_EXTERN PetscErrorCode DMPlexCreateNaturalVector(DM, Vec *);

/* mesh adaptation */
PETSC_EXTERN PetscErrorCode DMPlexSnapToGeomModel(DM, PetscInt, PetscInt, const PetscScalar[], PetscScalar[]);
PETSC_EXTERN PetscErrorCode DMPlexMetricSetFromOptions(DM);
PETSC_EXTERN PetscErrorCode DMPlexMetricSetIsotropic(DM, PetscBool);
PETSC_EXTERN PetscErrorCode DMPlexMetricIsIsotropic(DM, PetscBool *);
PETSC_EXTERN PetscErrorCode DMPlexMetricSetUniform(DM, PetscBool);
PETSC_EXTERN PetscErrorCode DMPlexMetricIsUniform(DM, PetscBool *);
PETSC_EXTERN PetscErrorCode DMPlexMetricSetRestrictAnisotropyFirst(DM, PetscBool);
PETSC_EXTERN PetscErrorCode DMPlexMetricRestrictAnisotropyFirst(DM, PetscBool *);
PETSC_EXTERN PetscErrorCode DMPlexMetricSetNoInsertion(DM, PetscBool);
PETSC_EXTERN PetscErrorCode DMPlexMetricNoInsertion(DM, PetscBool *);
PETSC_EXTERN PetscErrorCode DMPlexMetricSetNoSwapping(DM, PetscBool);
PETSC_EXTERN PetscErrorCode DMPlexMetricNoSwapping(DM, PetscBool *);
PETSC_EXTERN PetscErrorCode DMPlexMetricSetNoMovement(DM, PetscBool);
PETSC_EXTERN PetscErrorCode DMPlexMetricNoMovement(DM, PetscBool *);
PETSC_EXTERN PetscErrorCode DMPlexMetricSetNoSurf(DM, PetscBool);
PETSC_EXTERN PetscErrorCode DMPlexMetricNoSurf(DM, PetscBool *);
PETSC_EXTERN PetscErrorCode DMPlexMetricSetMinimumMagnitude(DM, PetscReal);
PETSC_EXTERN PetscErrorCode DMPlexMetricGetMinimumMagnitude(DM, PetscReal *);
PETSC_EXTERN PetscErrorCode DMPlexMetricSetMaximumMagnitude(DM, PetscReal);
PETSC_EXTERN PetscErrorCode DMPlexMetricGetMaximumMagnitude(DM, PetscReal *);
PETSC_EXTERN PetscErrorCode DMPlexMetricSetMaximumAnisotropy(DM, PetscReal);
PETSC_EXTERN PetscErrorCode DMPlexMetricGetMaximumAnisotropy(DM, PetscReal *);
PETSC_EXTERN PetscErrorCode DMPlexMetricSetTargetComplexity(DM, PetscReal);
PETSC_EXTERN PetscErrorCode DMPlexMetricGetTargetComplexity(DM, PetscReal *);
PETSC_EXTERN PetscErrorCode DMPlexMetricSetNormalizationOrder(DM, PetscReal);
PETSC_EXTERN PetscErrorCode DMPlexMetricGetNormalizationOrder(DM, PetscReal *);
PETSC_EXTERN PetscErrorCode DMPlexMetricSetGradationFactor(DM, PetscReal);
PETSC_EXTERN PetscErrorCode DMPlexMetricGetGradationFactor(DM, PetscReal *);
PETSC_EXTERN PetscErrorCode DMPlexMetricSetHausdorffNumber(DM, PetscReal);
PETSC_EXTERN PetscErrorCode DMPlexMetricGetHausdorffNumber(DM, PetscReal *);
PETSC_EXTERN PetscErrorCode DMPlexMetricSetVerbosity(DM, PetscInt);
PETSC_EXTERN PetscErrorCode DMPlexMetricGetVerbosity(DM, PetscInt *);
PETSC_EXTERN PetscErrorCode DMPlexMetricSetNumIterations(DM, PetscInt);
PETSC_EXTERN PetscErrorCode DMPlexMetricGetNumIterations(DM, PetscInt *);
PETSC_EXTERN PetscErrorCode DMPlexMetricCreate(DM, PetscInt, Vec *);
PETSC_EXTERN PetscErrorCode DMPlexMetricCreateUniform(DM, PetscInt, PetscReal, Vec *);
PETSC_EXTERN PetscErrorCode DMPlexMetricCreateIsotropic(DM, PetscInt, Vec, Vec *);
PETSC_EXTERN PetscErrorCode DMPlexMetricDeterminantCreate(DM, PetscInt, Vec *, DM *);
PETSC_EXTERN PetscErrorCode DMPlexMetricEnforceSPD(DM, Vec, PetscBool, PetscBool, Vec, Vec);
PETSC_EXTERN PetscErrorCode DMPlexMetricNormalize(DM, Vec, PetscBool, PetscBool, Vec, Vec);
PETSC_EXTERN PetscErrorCode DMPlexMetricAverage(DM, PetscInt, PetscReal[], Vec[], Vec);
PETSC_EXTERN PetscErrorCode DMPlexMetricAverage2(DM, Vec, Vec, Vec);
PETSC_EXTERN PetscErrorCode DMPlexMetricAverage3(DM, Vec, Vec, Vec, Vec);
PETSC_EXTERN PetscErrorCode DMPlexMetricIntersection(DM, PetscInt, Vec[], Vec);
PETSC_EXTERN PetscErrorCode DMPlexMetricIntersection2(DM, Vec, Vec, Vec);
PETSC_EXTERN PetscErrorCode DMPlexMetricIntersection3(DM, Vec, Vec, Vec, Vec);

PETSC_EXTERN PetscErrorCode DMPlexGlobalToLocalBasis(DM, Vec);
PETSC_EXTERN PetscErrorCode DMPlexLocalToGlobalBasis(DM, Vec);
PETSC_EXTERN PetscErrorCode DMPlexCreateBasisRotation(DM, PetscReal, PetscReal, PetscReal);

/* storage version */
#define DMPLEX_STORAGE_VERSION_FIRST  "1.0.0"
#define DMPLEX_STORAGE_VERSION_STABLE "1.0.0"
#define DMPLEX_STORAGE_VERSION_LATEST "3.0.0"

PETSC_EXTERN PetscErrorCode DMPlexTopologyView(DM, PetscViewer);
PETSC_EXTERN PetscErrorCode DMPlexCoordinatesView(DM, PetscViewer);
PETSC_EXTERN PetscErrorCode DMPlexLabelsView(DM, PetscViewer);
PETSC_EXTERN PetscErrorCode DMPlexSectionView(DM, PetscViewer, DM);
PETSC_EXTERN PetscErrorCode DMPlexGlobalVectorView(DM, PetscViewer, DM, Vec);
PETSC_EXTERN PetscErrorCode DMPlexLocalVectorView(DM, PetscViewer, DM, Vec);
PETSC_EXTERN PetscErrorCode DMPlexVecView1D(DM, PetscInt, Vec[], PetscViewer);

PETSC_EXTERN PetscErrorCode DMPlexTopologyLoad(DM, PetscViewer, PetscSF *);
PETSC_EXTERN PetscErrorCode DMPlexCoordinatesLoad(DM, PetscViewer, PetscSF);
PETSC_EXTERN PetscErrorCode DMPlexLabelsLoad(DM, PetscViewer, PetscSF);
PETSC_EXTERN PetscErrorCode DMPlexSectionLoad(DM, PetscViewer, DM, PetscSF, PetscSF *, PetscSF *);
PETSC_EXTERN PetscErrorCode DMPlexGlobalVectorLoad(DM, PetscViewer, DM, PetscSF, Vec);
PETSC_EXTERN PetscErrorCode DMPlexLocalVectorLoad(DM, PetscViewer, DM, PetscSF, Vec);

PETSC_EXTERN PetscErrorCode DMPlexGetLocalOffsets(DM, DMLabel, PetscInt, PetscInt, PetscInt, PetscInt *, PetscInt *, PetscInt *, PetscInt *, PetscInt **);
PETSC_EXTERN PetscErrorCode DMPlexGetLocalOffsetsSupport(DM, DMLabel, PetscInt, PetscInt *, PetscInt *, PetscInt *, PetscInt **, PetscInt **);

/* point queue */
PETSC_EXTERN PetscErrorCode DMPlexPointQueueCreate(PetscInt, DMPlexPointQueue *);
PETSC_EXTERN PetscErrorCode DMPlexPointQueueDestroy(DMPlexPointQueue *);
PETSC_EXTERN PetscErrorCode DMPlexPointQueueEnsureSize(DMPlexPointQueue);
PETSC_EXTERN PetscErrorCode DMPlexPointQueueEnqueue(DMPlexPointQueue, PetscInt);
PETSC_EXTERN PetscErrorCode DMPlexPointQueueDequeue(DMPlexPointQueue, PetscInt *);
PETSC_EXTERN PetscErrorCode DMPlexPointQueueFront(DMPlexPointQueue, PetscInt *);
PETSC_EXTERN PetscErrorCode DMPlexPointQueueBack(DMPlexPointQueue, PetscInt *);
PETSC_EXTERN PetscBool      DMPlexPointQueueEmpty(DMPlexPointQueue);
PETSC_EXTERN PetscErrorCode DMPlexPointQueueEmptyCollective(PetscObject, DMPlexPointQueue, PetscBool *);
