13c48a1e8SJed Brown #if !defined(__PETSCDMDA_H) 23c48a1e8SJed Brown #define __PETSCDMDA_H 33c48a1e8SJed Brown 42c8e378dSBarry Smith #include <petscdm.h> 51e25c274SJed Brown #include <petscdmdatypes.h> 62c8e378dSBarry Smith #include <petscpf.h> 72c8e378dSBarry Smith #include <petscao.h> 8bb619f44SMatthew G. Knepley #include <petscfe.h> 93c48a1e8SJed Brown 103c48a1e8SJed Brown /*MC 113c48a1e8SJed Brown DMDA_STENCIL_STAR - "Star"-type stencil. In logical grid coordinates, only (i,j,k), (i+s,j,k), (i,j+s,k), 123c48a1e8SJed Brown (i,j,k+s) are in the stencil NOT, for example, (i+s,j+s,k) 133c48a1e8SJed Brown 143c48a1e8SJed Brown Level: beginner 153c48a1e8SJed Brown 161957e957SBarry Smith Determines what ghost point values are brought over to each process; in this case the "corner" values are not 171957e957SBarry Smith brought over and hence should not be accessed locally 181957e957SBarry Smith 19db05f41bSBarry Smith .seealso: DMDA_STENCIL_BOX, DMDAStencilType, DMDASetStencilType() 203c48a1e8SJed Brown M*/ 213c48a1e8SJed Brown 223c48a1e8SJed Brown /*MC 233c48a1e8SJed Brown DMDA_STENCIL_BOX - "Box"-type stencil. In logical grid coordinates, any of (i,j,k), (i+s,j+r,k+t) may 243c48a1e8SJed Brown be in the stencil. 253c48a1e8SJed Brown 263c48a1e8SJed Brown Level: beginner 273c48a1e8SJed Brown 28db05f41bSBarry Smith .seealso: DMDA_STENCIL_STAR, DMDAStencilType, DMDASetStencilType() 293c48a1e8SJed Brown M*/ 303c48a1e8SJed Brown 31014dd563SJed Brown PETSC_EXTERN PetscErrorCode DMDASetInterpolationType(DM,DMDAInterpolationType); 32014dd563SJed Brown PETSC_EXTERN PetscErrorCode DMDAGetInterpolationType(DM,DMDAInterpolationType*); 333c48a1e8SJed Brown 34014dd563SJed Brown PETSC_EXTERN PetscErrorCode DMDASetElementType(DM,DMDAElementType); 35014dd563SJed Brown PETSC_EXTERN PetscErrorCode DMDAGetElementType(DM,DMDAElementType*); 36014dd563SJed Brown PETSC_EXTERN PetscErrorCode DMDAGetElements(DM,PetscInt *,PetscInt *,const PetscInt*[]); 37014dd563SJed Brown PETSC_EXTERN PetscErrorCode DMDARestoreElements(DM,PetscInt *,PetscInt *,const PetscInt*[]); 383c48a1e8SJed Brown 393c48a1e8SJed Brown typedef enum { DMDA_X,DMDA_Y,DMDA_Z } DMDADirection; 403c48a1e8SJed Brown 413c48a1e8SJed Brown #define MATSEQUSFFT "sequsfft" 423c48a1e8SJed Brown 43014dd563SJed Brown PETSC_EXTERN PetscErrorCode DMDACreate(MPI_Comm,DM*); 44014dd563SJed Brown PETSC_EXTERN PetscErrorCode DMDASetSizes(DM,PetscInt,PetscInt,PetscInt); 45bff4a2f0SMatthew G. Knepley PETSC_EXTERN PetscErrorCode DMDACreate1d(MPI_Comm,DMBoundaryType,PetscInt,PetscInt,PetscInt,const PetscInt[],DM *); 46bff4a2f0SMatthew G. Knepley PETSC_EXTERN PetscErrorCode DMDACreate2d(MPI_Comm,DMBoundaryType,DMBoundaryType,DMDAStencilType,PetscInt,PetscInt,PetscInt,PetscInt,PetscInt,PetscInt,const PetscInt[],const PetscInt[],DM*); 47bff4a2f0SMatthew G. Knepley PETSC_EXTERN PetscErrorCode DMDACreate3d(MPI_Comm,DMBoundaryType,DMBoundaryType,DMBoundaryType,DMDAStencilType,PetscInt,PetscInt,PetscInt,PetscInt,PetscInt,PetscInt,PetscInt,PetscInt,const PetscInt[],const PetscInt[],const PetscInt[],DM*); 483c48a1e8SJed Brown 49014dd563SJed Brown PETSC_EXTERN PetscErrorCode DMDAGlobalToNaturalBegin(DM,Vec,InsertMode,Vec); 50014dd563SJed Brown PETSC_EXTERN PetscErrorCode DMDAGlobalToNaturalEnd(DM,Vec,InsertMode,Vec); 51014dd563SJed Brown PETSC_EXTERN PetscErrorCode DMDANaturalToGlobalBegin(DM,Vec,InsertMode,Vec); 52014dd563SJed Brown PETSC_EXTERN PetscErrorCode DMDANaturalToGlobalEnd(DM,Vec,InsertMode,Vec); 53d78e899eSRichard Tran Mills PETSC_DEPRECATED("Use DMLocalToLocalBegin()") PETSC_STATIC_INLINE PetscErrorCode DMDALocalToLocalBegin(DM dm,Vec g,InsertMode mode,Vec l) {return DMLocalToLocalBegin(dm,g,mode,l);} 54d78e899eSRichard Tran Mills PETSC_DEPRECATED("Use DMLocalToLocalEnd()") PETSC_STATIC_INLINE PetscErrorCode DMDALocalToLocalEnd(DM dm,Vec g,InsertMode mode,Vec l) {return DMLocalToLocalEnd(dm,g,mode,l);} 55014dd563SJed Brown PETSC_EXTERN PetscErrorCode DMDACreateNaturalVector(DM,Vec *); 563c48a1e8SJed Brown 57014dd563SJed Brown PETSC_EXTERN PetscErrorCode DMDAGetCorners(DM,PetscInt*,PetscInt*,PetscInt*,PetscInt*,PetscInt*,PetscInt*); 58014dd563SJed Brown PETSC_EXTERN PetscErrorCode DMDAGetGhostCorners(DM,PetscInt*,PetscInt*,PetscInt*,PetscInt*,PetscInt*,PetscInt*); 59bff4a2f0SMatthew G. Knepley PETSC_EXTERN PetscErrorCode DMDAGetInfo(DM,PetscInt*,PetscInt*,PetscInt*,PetscInt*,PetscInt*,PetscInt*,PetscInt*,PetscInt*,PetscInt*,DMBoundaryType*,DMBoundaryType*,DMBoundaryType*,DMDAStencilType*); 60014dd563SJed Brown PETSC_EXTERN PetscErrorCode DMDAGetProcessorSubset(DM,DMDADirection,PetscInt,MPI_Comm*); 61014dd563SJed Brown PETSC_EXTERN PetscErrorCode DMDAGetProcessorSubsets(DM,DMDADirection,MPI_Comm*); 62db05f41bSBarry Smith PETSC_EXTERN PetscErrorCode DMDAGetRay(DM,DMDADirection,PetscInt,Vec*,VecScatter*); 633c48a1e8SJed Brown 64014dd563SJed Brown PETSC_EXTERN PetscErrorCode DMDAGlobalToNaturalAllCreate(DM,VecScatter*); 65014dd563SJed Brown PETSC_EXTERN PetscErrorCode DMDANaturalAllToGlobalCreate(DM,VecScatter*); 663c48a1e8SJed Brown 67bd1fc5aeSBarry Smith PETSC_EXTERN PetscErrorCode DMDAGetScatter(DM,VecScatter*,VecScatter*); 68014dd563SJed Brown PETSC_EXTERN PetscErrorCode DMDAGetNeighbors(DM,const PetscMPIInt**); 693c48a1e8SJed Brown 709db3d8bcSStefano Zampini PETSC_EXTERN PetscErrorCode DMDASetAOType(DM,AOType); 71014dd563SJed Brown PETSC_EXTERN PetscErrorCode DMDAGetAO(DM,AO*); 72014dd563SJed Brown PETSC_EXTERN PetscErrorCode DMDASetUniformCoordinates(DM,PetscReal,PetscReal,PetscReal,PetscReal,PetscReal,PetscReal); 73c593f006SBarry Smith PETSC_EXTERN PetscErrorCode DMDAGetCoordinateArray(DM,void*); 74c593f006SBarry Smith PETSC_EXTERN PetscErrorCode DMDARestoreCoordinateArray(DM,void*); 75014dd563SJed Brown PETSC_EXTERN PetscErrorCode DMDAGetBoundingBox(DM,PetscReal[],PetscReal[]); 76014dd563SJed Brown PETSC_EXTERN PetscErrorCode DMDAGetLocalBoundingBox(DM,PetscReal[],PetscReal[]); 77a74ba6f7SBarry Smith PETSC_EXTERN PetscErrorCode DMDAGetLogicalCoordinate(DM,PetscScalar,PetscScalar,PetscScalar,PetscInt*,PetscInt*,PetscInt*,PetscScalar*,PetscScalar*,PetscScalar*); 78f0aa4865SJed Brown /* function to wrap coordinates around boundary */ 79014dd563SJed Brown PETSC_EXTERN PetscErrorCode DMDAMapCoordsToPeriodicDomain(DM,PetscScalar*,PetscScalar*); 80f0aa4865SJed Brown 81db05f41bSBarry Smith PETSC_EXTERN PetscErrorCode DMDAGetReducedDMDA(DM,PetscInt,DM*); 823c48a1e8SJed Brown 83014dd563SJed Brown PETSC_EXTERN PetscErrorCode DMDASetFieldName(DM,PetscInt,const char[]); 84014dd563SJed Brown PETSC_EXTERN PetscErrorCode DMDAGetFieldName(DM,PetscInt,const char**); 85*c629b14aSBarry Smith PETSC_EXTERN PetscErrorCode DMDASetFieldNames(DM,const char * const *); 86*c629b14aSBarry Smith PETSC_EXTERN PetscErrorCode DMDAGetFieldNames(DM,const char * const **); 87109c9344SBarry Smith PETSC_EXTERN PetscErrorCode DMDASetCoordinateName(DM,PetscInt,const char[]); 88109c9344SBarry Smith PETSC_EXTERN PetscErrorCode DMDAGetCoordinateName(DM,PetscInt,const char**); 893c48a1e8SJed Brown 90bff4a2f0SMatthew G. Knepley PETSC_EXTERN PetscErrorCode DMDASetBoundaryType(DM,DMBoundaryType,DMBoundaryType,DMBoundaryType); 91014dd563SJed Brown PETSC_EXTERN PetscErrorCode DMDASetDof(DM, PetscInt); 927ddda789SPeter Brune PETSC_EXTERN PetscErrorCode DMDASetOverlap(DM,PetscInt,PetscInt,PetscInt); 937ddda789SPeter Brune PETSC_EXTERN PetscErrorCode DMDAGetOverlap(DM,PetscInt*,PetscInt*,PetscInt*); 943e7870d2SPeter Brune PETSC_EXTERN PetscErrorCode DMDASetNumLocalSubDomains(DM,PetscInt); 953e7870d2SPeter Brune PETSC_EXTERN PetscErrorCode DMDAGetNumLocalSubDomains(DM,PetscInt*); 9695c13181SPeter Brune PETSC_EXTERN PetscErrorCode DMDAGetOffset(DM,PetscInt*,PetscInt*,PetscInt*,PetscInt*,PetscInt*,PetscInt*); 9795c13181SPeter Brune PETSC_EXTERN PetscErrorCode DMDASetOffset(DM,PetscInt,PetscInt,PetscInt,PetscInt,PetscInt,PetscInt); 9840234c92SPeter Brune PETSC_EXTERN PetscErrorCode DMDAGetNonOverlappingRegion(DM,PetscInt*,PetscInt*,PetscInt*,PetscInt*,PetscInt*,PetscInt*); 9940234c92SPeter Brune PETSC_EXTERN PetscErrorCode DMDASetNonOverlappingRegion(DM,PetscInt,PetscInt,PetscInt,PetscInt,PetscInt,PetscInt); 100014dd563SJed Brown PETSC_EXTERN PetscErrorCode DMDASetStencilWidth(DM, PetscInt); 101014dd563SJed Brown PETSC_EXTERN PetscErrorCode DMDASetOwnershipRanges(DM,const PetscInt[],const PetscInt[],const PetscInt[]); 102014dd563SJed Brown PETSC_EXTERN PetscErrorCode DMDAGetOwnershipRanges(DM,const PetscInt**,const PetscInt**,const PetscInt**); 103014dd563SJed Brown PETSC_EXTERN PetscErrorCode DMDASetNumProcs(DM, PetscInt, PetscInt, PetscInt); 104014dd563SJed Brown PETSC_EXTERN PetscErrorCode DMDASetStencilType(DM, DMDAStencilType); 1053c48a1e8SJed Brown 106014dd563SJed Brown PETSC_EXTERN PetscErrorCode DMDAVecGetArray(DM,Vec,void *); 107014dd563SJed Brown PETSC_EXTERN PetscErrorCode DMDAVecRestoreArray(DM,Vec,void *); 1083c48a1e8SJed Brown 109014dd563SJed Brown PETSC_EXTERN PetscErrorCode DMDAVecGetArrayDOF(DM,Vec,void *); 110014dd563SJed Brown PETSC_EXTERN PetscErrorCode DMDAVecRestoreArrayDOF(DM,Vec,void *); 1113c48a1e8SJed Brown 1125edff71fSBarry Smith PETSC_EXTERN PetscErrorCode DMDAVecGetArrayRead(DM,Vec,void *); 1135edff71fSBarry Smith PETSC_EXTERN PetscErrorCode DMDAVecRestoreArrayRead(DM,Vec,void *); 1145edff71fSBarry Smith 1155edff71fSBarry Smith PETSC_EXTERN PetscErrorCode DMDAVecGetArrayDOFRead(DM,Vec,void *); 1165edff71fSBarry Smith PETSC_EXTERN PetscErrorCode DMDAVecRestoreArrayDOFRead(DM,Vec,void *); 1175edff71fSBarry Smith 118014dd563SJed Brown PETSC_EXTERN PetscErrorCode DMDASplitComm2d(MPI_Comm,PetscInt,PetscInt,PetscInt,MPI_Comm*); 1193c48a1e8SJed Brown 120ff9846d9SPeter Brune PETSC_EXTERN PetscErrorCode DMDACreatePatchIS(DM,MatStencil*,MatStencil*,IS*); 121ff9846d9SPeter Brune 1223c48a1e8SJed Brown 1233c48a1e8SJed Brown /*MC 1243c48a1e8SJed Brown DMDACoor2d - Structure for holding 2d (x and y) coordinates. 1253c48a1e8SJed Brown 1263c48a1e8SJed Brown Level: intermediate 1273c48a1e8SJed Brown 1288e897e54SSatish Balay Synopsis: 1293c48a1e8SJed Brown DMDACoor2d **coors; 1303c48a1e8SJed Brown Vec vcoors; 1313c48a1e8SJed Brown DM cda; 1322150357eSBarry Smith DMGetCoordinates(da,&vcoors); 1331957e957SBarry Smith DMGetCoordinateDM(da,&cda); 1343c48a1e8SJed Brown DMDAVecGetArray(cda,vcoors,&coors); 1353c48a1e8SJed Brown DMDAGetCorners(cda,&mstart,&nstart,0,&m,&n,0) 1363c48a1e8SJed Brown for (i=mstart; i<mstart+m; i++) { 1373c48a1e8SJed Brown for (j=nstart; j<nstart+n; j++) { 1383c48a1e8SJed Brown x = coors[j][i].x; 1393c48a1e8SJed Brown y = coors[j][i].y; 1403c48a1e8SJed Brown ...... 1413c48a1e8SJed Brown } 1423c48a1e8SJed Brown } 1433c48a1e8SJed Brown DMDAVecRestoreArray(dac,vcoors,&coors); 1443c48a1e8SJed Brown 1458e897e54SSatish Balay .seealso: DMDACoor3d, DMGetCoordinateDM(), DMGetCoordinates() 1463c48a1e8SJed Brown M*/ 1473c48a1e8SJed Brown typedef struct {PetscScalar x,y;} DMDACoor2d; 1483c48a1e8SJed Brown 1493c48a1e8SJed Brown /*MC 1503c48a1e8SJed Brown DMDACoor3d - Structure for holding 3d (x, y and z) coordinates. 1513c48a1e8SJed Brown 1523c48a1e8SJed Brown Level: intermediate 1533c48a1e8SJed Brown 1548e897e54SSatish Balay Synopsis: 1553c48a1e8SJed Brown DMDACoor3d ***coors; 1563c48a1e8SJed Brown Vec vcoors; 1573c48a1e8SJed Brown DM cda; 1582150357eSBarry Smith DMGetCoordinates(da,&vcoors); 1591957e957SBarry Smith DMGetCoordinateDM(da,&cda); 1603c48a1e8SJed Brown DMDAVecGetArray(cda,vcoors,&coors); 1613c48a1e8SJed Brown DMDAGetCorners(cda,&mstart,&nstart,&pstart,&m,&n,&p) 1623c48a1e8SJed Brown for (i=mstart; i<mstart+m; i++) { 1633c48a1e8SJed Brown for (j=nstart; j<nstart+n; j++) { 1643c48a1e8SJed Brown for (k=pstart; k<pstart+p; k++) { 1653c48a1e8SJed Brown x = coors[k][j][i].x; 1663c48a1e8SJed Brown y = coors[k][j][i].y; 1673c48a1e8SJed Brown z = coors[k][j][i].z; 1683c48a1e8SJed Brown ...... 1693c48a1e8SJed Brown } 1703c48a1e8SJed Brown } 1713c48a1e8SJed Brown DMDAVecRestoreArray(dac,vcoors,&coors); 1723c48a1e8SJed Brown 1738e897e54SSatish Balay .seealso: DMDACoor2d, DMGetCoordinateDM(), DMGetCoordinates() 1743c48a1e8SJed Brown M*/ 1753c48a1e8SJed Brown typedef struct {PetscScalar x,y,z;} DMDACoor3d; 1763c48a1e8SJed Brown 177014dd563SJed Brown PETSC_EXTERN PetscErrorCode DMDAGetLocalInfo(DM,DMDALocalInfo*); 1783c48a1e8SJed Brown 179014dd563SJed Brown PETSC_EXTERN PetscErrorCode MatRegisterDAAD(void); 180014dd563SJed Brown PETSC_EXTERN PetscErrorCode MatCreateDAAD(DM,Mat*); 181014dd563SJed Brown PETSC_EXTERN PetscErrorCode MatCreateSeqUSFFT(Vec,DM,Mat*); 1823c48a1e8SJed Brown 183b412c318SBarry Smith PETSC_EXTERN PetscErrorCode DMDASetGetMatrix(DM,PetscErrorCode (*)(DM, Mat *)); 184ce308e1dSBarry Smith PETSC_EXTERN PetscErrorCode DMDASetBlockFills(DM,const PetscInt*,const PetscInt*); 185014dd563SJed Brown PETSC_EXTERN PetscErrorCode DMDASetRefinementFactor(DM,PetscInt,PetscInt,PetscInt); 186014dd563SJed Brown PETSC_EXTERN PetscErrorCode DMDAGetRefinementFactor(DM,PetscInt*,PetscInt*,PetscInt*); 1873c48a1e8SJed Brown 188014dd563SJed Brown PETSC_EXTERN PetscErrorCode DMDAGetArray(DM,PetscBool ,void*); 189014dd563SJed Brown PETSC_EXTERN PetscErrorCode DMDARestoreArray(DM,PetscBool ,void*); 1903c48a1e8SJed Brown 191014dd563SJed Brown PETSC_EXTERN PetscErrorCode DMDACreatePF(DM,PF*); 1923c48a1e8SJed Brown 1933582350cSMatthew G. Knepley /* Emulation of DMPlex */ 1943582350cSMatthew G. Knepley PETSC_EXTERN PetscErrorCode DMDAGetNumCells(DM, PetscInt *, PetscInt *, PetscInt *, PetscInt *); 19548710be7SMatthew G. Knepley PETSC_EXTERN PetscErrorCode DMDAGetCellPoint(DM, PetscInt, PetscInt, PetscInt, PetscInt *); 19657459e9aSMatthew G Knepley PETSC_EXTERN PetscErrorCode DMDAGetNumVertices(DM, PetscInt *, PetscInt *, PetscInt *, PetscInt *); 19757459e9aSMatthew G Knepley PETSC_EXTERN PetscErrorCode DMDAGetNumFaces(DM, PetscInt *, PetscInt *, PetscInt *, PetscInt *, PetscInt *, PetscInt *); 19857459e9aSMatthew G Knepley PETSC_EXTERN PetscErrorCode DMDAGetHeightStratum(DM, PetscInt, PetscInt *, PetscInt *); 199793f3fe5SMatthew G. Knepley PETSC_EXTERN PetscErrorCode DMDAGetDepthStratum(DM, PetscInt, PetscInt *, PetscInt *); 20044e1f9abSMatthew G. Knepley PETSC_EXTERN PetscErrorCode DMDACreateSection(DM, const PetscInt[], const PetscInt[], const PetscInt[], PetscSection *); 2018e0841e0SMatthew G. Knepley PETSC_EXTERN PetscErrorCode DMDAComputeCellGeometryFEM(DM, PetscInt, PetscQuadrature, PetscReal [], PetscReal [], PetscReal [], PetscReal []); 2026693a731SMatthew G. Knepley PETSC_EXTERN PetscErrorCode DMDAGetTransitiveClosure(DM, PetscInt, PetscBool, PetscInt *, PetscInt **); 2036693a731SMatthew G. Knepley PETSC_EXTERN PetscErrorCode DMDARestoreTransitiveClosure(DM, PetscInt, PetscBool, PetscInt *, PetscInt **); 204d7a12f93SMatthew G. Knepley PETSC_EXTERN PetscErrorCode DMDAVecGetClosure(DM, PetscSection, Vec, PetscInt, PetscInt *, PetscScalar **); 205d7a12f93SMatthew G. Knepley PETSC_EXTERN PetscErrorCode DMDAVecRestoreClosure(DM, PetscSection, Vec, PetscInt, PetscInt *, PetscScalar **); 20657459e9aSMatthew G Knepley PETSC_EXTERN PetscErrorCode DMDAVecSetClosure(DM, PetscSection, Vec, PetscInt, const PetscScalar *, InsertMode); 207aa1993deSMatthew G Knepley PETSC_EXTERN PetscErrorCode DMDAGetClosure(DM, PetscSection, PetscInt, PetscInt*, const PetscInt**); 208aa1993deSMatthew G Knepley PETSC_EXTERN PetscErrorCode DMDARestoreClosure(DM, PetscSection, PetscInt, PetscInt*, const PetscInt**); 209d7a12f93SMatthew G. Knepley PETSC_EXTERN PetscErrorCode DMDAGetClosureScalar(DM, PetscSection, PetscInt, PetscScalar*, PetscInt*, PetscScalar**); 210d7a12f93SMatthew G. Knepley PETSC_EXTERN PetscErrorCode DMDARestoreClosureScalar(DM, PetscSection, PetscInt, PetscScalar*, PetscInt*, PetscScalar**); 211aa1993deSMatthew G Knepley PETSC_EXTERN PetscErrorCode DMDASetClosureScalar(DM,PetscSection,PetscInt,PetscScalar*,const PetscScalar*,InsertMode); 212f0e3914cSSatish Balay PETSC_EXTERN PetscErrorCode DMDAConvertToCell(DM, MatStencil, PetscInt *); 2133385ff7eSMatthew G. Knepley PETSC_EXTERN PetscErrorCode DMDASetVertexCoordinates(DM,PetscReal,PetscReal,PetscReal,PetscReal,PetscReal,PetscReal); 2148ca2f13cSMatthew G. Knepley PETSC_EXTERN PetscErrorCode DMDASetPreallocationCenterDimension(DM, PetscInt); 2158ca2f13cSMatthew G. Knepley PETSC_EXTERN PetscErrorCode DMDAGetPreallocationCenterDimension(DM, PetscInt*); 21680800b1aSMatthew G Knepley 217b7a4d31fSMatthew G. Knepley PETSC_EXTERN PetscErrorCode DMDAProjectFunction(DM, void (**)(const PetscReal [], PetscScalar *, void *), void **, InsertMode, Vec); 218b7a4d31fSMatthew G. Knepley PETSC_EXTERN PetscErrorCode DMDAProjectFunctionLocal(DM, void (**)(const PetscReal [], PetscScalar *, void *), void **, InsertMode, Vec); 219b7a4d31fSMatthew G. Knepley PETSC_EXTERN PetscErrorCode DMDAComputeL2Diff(DM, void (**)(const PetscReal [], PetscScalar *, void *), void **, Vec, PetscReal *); 220b7a4d31fSMatthew G. Knepley PETSC_EXTERN PetscErrorCode DMDAComputeL2GradientDiff(DM, void (**)(const PetscReal [], const PetscReal [], PetscScalar *, void *), void **, Vec, const PetscReal[], PetscReal *); 2219a800dd8SMatthew G. Knepley 2223c48a1e8SJed Brown #endif 223