Actual source code: dmstagimpl.h
petsc-3.12.1 2019-10-22
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      1: #if !defined(DMSTAGIMPL_H_)
      2: #define DMSTAGIMPL_H_

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

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

     10: /* This value is 1 + 3^DMSTAG_MAX DIM */
     11: #define DMSTAG_NUMBER_LOCATIONS 28

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

     23:   /* Additional fields populated by DMSetUp() */
     24:   PetscInt          nGhost[DMSTAG_MAX_DIM];       /* Local dimensions (w/ ghosts)      */
     25:   PetscInt          start[DMSTAG_MAX_DIM];        /* First element number              */
     26:   PetscInt          startGhost[DMSTAG_MAX_DIM];   /* First element number (w/ ghosts)  */
     27:   PetscMPIInt       rank[DMSTAG_MAX_DIM];         /* Location in grid of ranks         */
     28:   PetscMPIInt       *neighbors;                   /* dim^3 local ranks                 */
     29:   PetscInt          *l[DMSTAG_MAX_DIM];           /* Elements/rank in each direction   */
     30:   VecScatter        gtol;                         /* Global --> Local                  */
     31:   VecScatter        ltog_injective;               /* Local  --> Global, injective      */
     32:   PetscInt          *locationOffsets;             /* Offsets for points in loc. rep.   */

     34:   /* Coordinates */
     35:   DMType            coordinateDMType;             /* DM type to create for coordinates */

     37:   /* Convenience (easily computed from the above) */
     38:   PetscInt          entriesPerElement;            /* Entries stored with each element   */
     39:   PetscInt          entries;                      /* Local number of entries            */
     40:   PetscInt          entriesGhost;                 /* Local numbers of entries w/ ghosts */
     41:   PetscBool         firstRank[DMSTAG_MAX_DIM];    /* First rank in this dim?            */
     42:   PetscBool         lastRank[DMSTAG_MAX_DIM];     /* Last rank in this dim?             */
     43: } DM_Stag;

     45: PETSC_INTERN PetscErrorCode DMSetUp_Stag_1d(DM);
     46: PETSC_INTERN PetscErrorCode DMSetUp_Stag_2d(DM);
     47: PETSC_INTERN PetscErrorCode DMSetUp_Stag_3d(DM);
     48: PETSC_INTERN PetscErrorCode DMStagPopulateLocalToGlobalInjective_1d(DM);
     49: PETSC_INTERN PetscErrorCode DMStagPopulateLocalToGlobalInjective_2d(DM);
     50: PETSC_INTERN PetscErrorCode DMStagPopulateLocalToGlobalInjective_3d(DM);
     51: PETSC_INTERN PetscErrorCode DMStagSetUniformCoordinatesExplicit_1d(DM,PetscReal,PetscReal);
     52: PETSC_INTERN PetscErrorCode DMStagSetUniformCoordinatesExplicit_2d(DM,PetscReal,PetscReal,PetscReal,PetscReal);
     53: PETSC_INTERN PetscErrorCode DMStagSetUniformCoordinatesExplicit_3d(DM,PetscReal,PetscReal,PetscReal,PetscReal,PetscReal,PetscReal);

     55: #endif