1 /* $Id: aij.h,v 1.46 2001/08/07 03:02:47 balay Exp $ */ 2 3 #include "src/mat/matimpl.h" 4 5 #if !defined(__AIJ_H) 6 #define __AIJ_H 7 8 /* Info about i-nodes (identical nodes) */ 9 typedef struct { 10 PetscTruth use; 11 int node_count; /* number of inodes */ 12 int *size; /* size of each inode */ 13 int limit; /* inode limit */ 14 int max_limit; /* maximum supported inode limit */ 15 PetscTruth checked; /* if inodes have been checked for */ 16 } Mat_SeqAIJ_Inode; 17 18 /* 19 MATSEQAIJ format - Compressed row storage (also called Yale sparse matrix 20 format), compatible with Fortran. The i[] and j[] arrays start at 1, 21 or 0, depending on the value of shift. For example, in Fortran 22 j[i[k]+p+shift] is the pth column in row k. Note that the diagonal 23 matrix elements are stored with the rest of the nonzeros (not separately). 24 */ 25 26 typedef struct { 27 PetscTruth sorted; /* if true, rows are sorted by increasing columns */ 28 PetscTruth roworiented; /* if true, row-oriented input, default */ 29 int nonew; /* 1 don't add new nonzeros, -1 generate error on new */ 30 PetscTruth singlemalloc; /* if true a, i, and j have been obtained with 31 one big malloc */ 32 PetscTruth freedata; /* free the i,j,a data when the matrix is destroyed; true by default */ 33 int nz,maxnz; /* nonzeros, allocated nonzeros */ 34 int *diag; /* pointers to diagonal elements */ 35 int *i; /* pointer to beginning of each row */ 36 int *imax; /* maximum space allocated for each row */ 37 int *ilen; /* actual length of each row */ 38 int *j; /* column values: j + i[k] - 1 is start of row k */ 39 PetscScalar *a; /* nonzero elements */ 40 IS row,col,icol; /* index sets, used for reorderings */ 41 PetscScalar *solve_work; /* work space used in MatSolve */ 42 int indexshift; /* zero or -one for C or Fortran indexing */ 43 Mat_SeqAIJ_Inode inode; /* identical node informaton */ 44 int reallocs; /* number of mallocs done during MatSetValues() 45 as more values are set than were prealloced */ 46 int rmax; /* max nonzeros in any row */ 47 PetscTruth ilu_preserve_row_sums; 48 PetscReal lu_dtcol; 49 PetscTruth lu_damp; 50 PetscReal lu_damping; 51 PetscReal lu_zeropivot; 52 PetscScalar *saved_values; /* location for stashing nonzero values of matrix */ 53 PetscScalar *idiag,*ssor; /* inverse of diagonal entries; space for eisen */ 54 55 PetscTruth keepzeroedrows; /* keeps matrix structure same in calls to MatZeroRows()*/ 56 PetscTruth ignorezeroentries; 57 ISColoring coloring; /* set with MatADSetColoring() used by MatADSetValues() */ 58 } Mat_SeqAIJ; 59 60 EXTERN int MatILUFactorSymbolic_SeqAIJ(Mat,IS,IS,MatILUInfo*,Mat *); 61 EXTERN int MatDuplicate_SeqAIJ(Mat,MatDuplicateOption,Mat*); 62 EXTERN int MatMarkDiagonal_SeqAIJ(Mat); 63 64 EXTERN int MatMult_SeqAIJ(Mat A,Vec,Vec); 65 EXTERN int MatMultAdd_SeqAIJ(Mat A,Vec,Vec,Vec); 66 EXTERN int MatMultTranspose_SeqAIJ(Mat A,Vec,Vec); 67 EXTERN int MatMultTransposeAdd_SeqAIJ(Mat A,Vec,Vec,Vec); 68 EXTERN int MatRelax_SeqAIJ(Mat,Vec,PetscReal,MatSORType,PetscReal,int,int,Vec); 69 70 EXTERN int MatSetColoring_SeqAIJ(Mat,ISColoring); 71 EXTERN int MatSetValuesAdic_SeqAIJ(Mat,void*); 72 EXTERN int MatSetValuesAdifor_SeqAIJ(Mat,int,void*); 73 74 #endif 75