1 2 #if !defined(__ADJ_H) 3 #define __ADJ_H 4 #include <petsc/private/matimpl.h> 5 6 /* 7 MATMPIAdj format - Compressed row storage for storing adjacency lists, and possibly weights 8 This is for grid reorderings (to reduce bandwidth) 9 grid partitionings, etc. This is NOT currently a dynamic data-structure. 10 11 */ 12 13 typedef struct { 14 PetscInt nz; 15 PetscInt *diag; /* pointers to diagonal elements, if they exist */ 16 PetscInt *i; /* pointer to beginning of each row */ 17 PetscInt *j; /* column values: j + i[k] is start of row k */ 18 PetscInt *values; /* numerical values */ 19 PetscBool useedgeweights; /* if edge weights are used */ 20 PetscBool symmetric; /* user indicates the nonzero structure is symmetric */ 21 PetscBool freeaij; /* free a, i,j at destroy */ 22 PetscBool freeaijwithfree; /* use free() to free i,j instead of PetscFree() */ 23 PetscScalar *rowvalues; /* scalar work space for MatGetRow() */ 24 PetscInt rowvalues_alloc; 25 } Mat_MPIAdj; 26 27 #endif 28