1: #if !defined(_PETSCDMDATYPES_H)
  2: #define _PETSCDMDATYPES_H

  4: #include <petscdmtypes.h>

  6: /*E
  7:     DMDAStencilType - Determines if the stencil extends only along the coordinate directions, or also
  8:       to the northeast, northwest etc

 10:    Level: beginner

 12: .seealso: DMDACreate1d(), DMDACreate2d(), DMDACreate3d(), DMDACreate(), DMDASetStencilType()
 13: E*/
 14: typedef enum { DMDA_STENCIL_STAR,DMDA_STENCIL_BOX } DMDAStencilType;

 16: /*E
 17:     DMDAInterpolationType - Defines the type of interpolation that will be returned by
 18:        DMCreateInterpolation.

 20:    Level: beginner

 22: .seealso: DMDACreate1d(), DMDACreate2d(), DMDACreate3d(), DMCreateInterpolation(), DMDASetInterpolationType(), DMDACreate()
 23: E*/
 24: typedef enum { DMDA_Q0, DMDA_Q1 } DMDAInterpolationType;

 26: /*E
 27:     DMDAElementType - Defines the type of elements that will be returned by
 28:        DMDAGetElements()

 30:    Level: beginner

 32: .seealso: DMDACreate1d(), DMDACreate2d(), DMDACreate3d(), DMCreateInterpolation(), DMDASetInterpolationType(),
 33:           DMDASetElementType(), DMDAGetElements(), DMDARestoreElements(), DMDACreate()
 34: E*/
 35: typedef enum { DMDA_ELEMENT_P1, DMDA_ELEMENT_Q1 } DMDAElementType;

 37: /*S
 38:      DMDALocalInfo - C struct that contains information about a structured grid and a processors logical
 39:               location in it.

 41:    Level: beginner

 43:   Concepts: distributed array

 45:   Developer note: Then entries in this struct are int instead of PetscInt so that the elements may
 46:                   be extracted in Fortran as if from an integer array

 48: .seealso:  DMDACreate1d(), DMDACreate2d(), DMDACreate3d(), DMDestroy(), DM, DMDAGetLocalInfo(), DMDAGetInfo()
 49: S*/
 50: typedef struct {
 51:   PetscInt         dim,dof,sw;
 52:   PetscInt         mx,my,mz;    /* global number of grid points in each direction */
 53:   PetscInt         xs,ys,zs;    /* starting point of this processor, excluding ghosts */
 54:   PetscInt         xm,ym,zm;    /* number of grid points on this processor, excluding ghosts */
 55:   PetscInt         gxs,gys,gzs;    /* starting point of this processor including ghosts */
 56:   PetscInt         gxm,gym,gzm;    /* number of grid points on this processor including ghosts */
 57:   DMBoundaryType   bx,by,bz; /* type of ghost nodes at boundary */
 58:   DMDAStencilType  st;
 59:   DM               da;
 60: } DMDALocalInfo;

 62: #endif