1 2 #if !defined(__ADJ_H) 3 #define __ADJ_H 4 #include "src/mat/matimpl.h" 5 6 7 /* 8 MATMPIAdj format - Compressed row storage for storing adjacency lists, and possibly weights 9 This is for grid reorderings (to reduce bandwidth) 10 grid partitionings, etc. This is NOT currently a dynamic data-structure. 11 12 */ 13 14 typedef struct { 15 int *rowners; /* ranges owned by each processor */ 16 int rstart,rend; /* start and end of local rows */ 17 int nz; 18 int *diag; /* pointers to diagonal elements, if they exist */ 19 int *i; /* pointer to beginning of each row */ 20 int *j; /* column values: j + i[k] - 1 is start of row k */ 21 int *values; /* numerical values */ 22 PetscTruth symmetric; /* user indicates the nonzero structure is symmetric */ 23 PetscTruth freeaij; /* call PetscFree() on a, i,j at destroy */ 24 } Mat_MPIAdj; 25 26 #endif 27