1: #pragma once

  3: #include <petscdmstag.h>
  4: #include <petsc/private/dmimpl.h>

  6: #define DMSTAG_MAX_DIM    3
  7: #define DMSTAG_MAX_STRATA DMSTAG_MAX_DIM + 1

  9: /* This value is 1 + 3^DMSTAG_MAX_DIM */
 10: #define DMSTAG_NUMBER_LOCATIONS 28

 12: typedef struct {
 13:   /* Fields which may require being set before DMSetUp() is called, set by DMStagInitialize().
 14:      Some may be adjusted by DMSetUp() */
 15:   PetscInt          N[DMSTAG_MAX_DIM];            /* Global dimensions (elements)      */
 16:   PetscInt          n[DMSTAG_MAX_DIM];            /* Local dimensions (elements)       */
 17:   PetscInt         *l[DMSTAG_MAX_DIM];            /* Elements/rank in each direction   */
 18:   PetscInt          dof[DMSTAG_MAX_STRATA];       /* Dof per point for each stratum    */
 19:   DMStagStencilType stencilType;                  /* Elementwise stencil type          */
 20:   PetscInt          stencilWidth;                 /* Elementwise ghost width           */
 21:   DMBoundaryType    boundaryType[DMSTAG_MAX_DIM]; /* Physical domain ghosting type     */
 22:   PetscInt          nRanks[DMSTAG_MAX_DIM];       /* Ranks in each direction           */

 24:   /* Fields unrelated to setup */
 25:   DMType   coordinateDMType;             /* DM type to create for coordinates */
 26:   PetscInt refineFactor[DMSTAG_MAX_DIM]; /* Ratio used in refining and coarsening */

 28:   /* Data above is copied by DMStagDuplicateWithoutSetup(), while data below is not */

 30:   /* Fields populated by DMSetUp() */
 31:   PetscInt     nGhost[DMSTAG_MAX_DIM];     /* Local dimensions (w/ ghosts)      */
 32:   PetscInt     start[DMSTAG_MAX_DIM];      /* First element number              */
 33:   PetscInt     startGhost[DMSTAG_MAX_DIM]; /* First element number (w/ ghosts)  */
 34:   PetscMPIInt  rank[DMSTAG_MAX_DIM];       /* Location in grid of ranks         */
 35:   PetscMPIInt *neighbors;                  /* dim^3 local ranks                 */
 36:   VecScatter   gtol;                       /* Global --> Local                  */
 37:   VecScatter   ltog_injective;             /* Local  --> Global, injective      */
 38:   VecScatter   ltol;                       /* Local  --> Local                  */
 39:   PetscInt    *locationOffsets;            /* Offsets for points in loc. rep.   */

 41:   /* Additional convenience fields populated by DMSetUp() (easily computed from the above) */
 42:   PetscInt  entriesPerElement;         /* Entries stored with each element   */
 43:   PetscInt  entries;                   /* Local number of entries            */
 44:   PetscInt  entriesGhost;              /* Local numbers of entries w/ ghosts */
 45:   PetscBool firstRank[DMSTAG_MAX_DIM]; /* First rank in this dim?            */
 46:   PetscBool lastRank[DMSTAG_MAX_DIM];  /* Last rank in this dim?             */

 48: } DM_Stag;

 50: PETSC_INTERN PetscErrorCode DMCreateMatrix_Stag_1D_AIJ_Assemble(DM, Mat);
 51: PETSC_INTERN PetscErrorCode DMCreateMatrix_Stag_2D_AIJ_Assemble(DM, Mat);
 52: PETSC_INTERN PetscErrorCode DMCreateMatrix_Stag_3D_AIJ_Assemble(DM, Mat);
 53: PETSC_INTERN PetscErrorCode DMStagDuplicateWithoutSetup(DM, MPI_Comm, DM *);
 54: PETSC_INTERN PetscErrorCode DMStagInitialize(DMBoundaryType, DMBoundaryType, DMBoundaryType, PetscInt, PetscInt, PetscInt, PetscInt, PetscInt, PetscInt, PetscInt, PetscInt, PetscInt, PetscInt, DMStagStencilType, PetscInt, const PetscInt[], const PetscInt[], const PetscInt[], DM);
 55: PETSC_INTERN PetscErrorCode DMSetUp_Stag_1d(DM);
 56: PETSC_INTERN PetscErrorCode DMSetUp_Stag_2d(DM);
 57: PETSC_INTERN PetscErrorCode DMSetUp_Stag_3d(DM);
 58: PETSC_INTERN PetscErrorCode DMStagRestrictSimple_1d(DM, Vec, DM, Vec);
 59: PETSC_INTERN PetscErrorCode DMStagRestrictSimple_2d(DM, Vec, DM, Vec);
 60: PETSC_INTERN PetscErrorCode DMStagRestrictSimple_3d(DM, Vec, DM, Vec);
 61: PETSC_INTERN PetscErrorCode DMStagPopulateInterpolation1d_Internal(DM, DM, Mat);
 62: PETSC_INTERN PetscErrorCode DMStagPopulateInterpolation2d_Internal(DM, DM, Mat);
 63: PETSC_INTERN PetscErrorCode DMStagPopulateInterpolation3d_Internal(DM, DM, Mat);
 64: PETSC_INTERN PetscErrorCode DMStagPopulateLocalToGlobalInjective_1d(DM);
 65: PETSC_INTERN PetscErrorCode DMStagPopulateLocalToGlobalInjective_2d(DM);
 66: PETSC_INTERN PetscErrorCode DMStagPopulateLocalToGlobalInjective_3d(DM);
 67: PETSC_INTERN PetscErrorCode DMStagPopulateLocalToLocal1d_Internal(DM);
 68: PETSC_INTERN PetscErrorCode DMStagPopulateLocalToLocal2d_Internal(DM);
 69: PETSC_INTERN PetscErrorCode DMStagPopulateLocalToLocal3d_Internal(DM);
 70: PETSC_INTERN PetscErrorCode DMStagPopulateRestriction1d_Internal(DM, DM, Mat);
 71: PETSC_INTERN PetscErrorCode DMStagPopulateRestriction2d_Internal(DM, DM, Mat);
 72: PETSC_INTERN PetscErrorCode DMStagPopulateRestriction3d_Internal(DM, DM, Mat);
 73: PETSC_INTERN PetscErrorCode DMStagSetUniformCoordinatesExplicit_1d(DM, PetscReal, PetscReal);
 74: PETSC_INTERN PetscErrorCode DMStagSetUniformCoordinatesExplicit_2d(DM, PetscReal, PetscReal, PetscReal, PetscReal);
 75: PETSC_INTERN PetscErrorCode DMStagSetUniformCoordinatesExplicit_3d(DM, PetscReal, PetscReal, PetscReal, PetscReal, PetscReal, PetscReal);
 76: PETSC_INTERN PetscErrorCode DMStagStencilLocationCanonicalize(DMStagStencilLocation, DMStagStencilLocation *);