Actual source code: matis.h
petsc-3.13.6 2020-09-29
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      4:  #include <petscsf.h>
      5:  #include <petsc/private/matimpl.h>

      7: typedef struct {
      8:   Mat         A;                           /* the local matrix */
      9:   VecScatter  cctx;                        /* column scatter */
     10:   VecScatter  rctx;                        /* row scatter */
     11:   Vec         x,y;                         /* work space for matrix vector product */
     12:   Vec         counter;                     /* counter vector */
     13:   PetscBool   pure_neumann;
     14:   PetscSF     sf,csf;                      /* SFs for rows and cols */
     15:   PetscInt    *sf_rootdata,*sf_leafdata;
     16:   PetscInt    *csf_rootdata,*csf_leafdata;
     17:   IS          getsub_ris,getsub_cis;       /* row and column ISs for MatCreateSubMatrix and MAT_REUSE_MATRIX */
     18:   PetscBool   islocalref;                  /* is a reference to a local submatrix? */
     19:   PetscBool   locempty;                    /* adapt local matrices for empty rows/cols during MatAssemblyEnd_IS */
     20:   PetscBool   storel2l;                    /* carry over local-to-local inherited in MatPtAP */
     21:   char        *lmattype;
     22:   PetscScalar *bdiag;                      /* Used by MatInvertBlockDiagonal_IS */
     23: } Mat_IS;

     25: struct _MatISLocalFields {
     26:   PetscInt nr,nc;
     27:   IS       *rf,*cf;
     28: };
     29: typedef struct _MatISLocalFields *MatISLocalFields;

     31: struct _MatISPtAP {
     32:   PetscReal fill;
     33:   IS        cis0,cis1,ris0,ris1;
     34:   Mat       *lP;
     35: };
     36: typedef struct _MatISPtAP *MatISPtAP;

     38: PETSC_EXTERN PetscErrorCode MatISSetMPIXAIJPreallocation_Private(Mat,Mat,PetscBool);
     39: #endif