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). The i[] and j[] arrays start at 0. For example, 21 j[i[k]+p] is the pth column in row k. Note that the diagonal 22 matrix elements are stored with the rest of the nonzeros (not separately). 23 */ 24 25 typedef struct { 26 PetscTruth sorted; /* if true, rows are sorted by increasing columns */ 27 PetscTruth roworiented; /* if true, row-oriented input, default */ 28 int nonew; /* 1 don't add new nonzeros, -1 generate error on new */ 29 PetscTruth singlemalloc; /* if true a, i, and j have been obtained with 30 one big malloc */ 31 PetscTruth freedata; /* free the i,j,a data when the matrix is destroyed; true by default */ 32 int nz,maxnz; /* nonzeros, allocated nonzeros */ 33 int *diag; /* pointers to diagonal elements */ 34 int *i; /* pointer to beginning of each row */ 35 int *imax; /* maximum space allocated for each row */ 36 int *ilen; /* actual length of each row */ 37 int *j; /* column values: j + i[k] - 1 is start of row k */ 38 PetscScalar *a; /* nonzero elements */ 39 IS row,col,icol; /* index sets, used for reorderings */ 40 PetscScalar *solve_work; /* work space used in MatSolve */ 41 Mat_SeqAIJ_Inode inode; /* identical node informaton */ 42 int reallocs; /* number of mallocs done during MatSetValues() 43 as more values are set than were prealloced */ 44 int rmax; /* max nonzeros in any row */ 45 PetscTruth ilu_preserve_row_sums; 46 PetscReal lu_dtcol; 47 PetscReal lu_damping; 48 PetscReal lu_shift; /* Manteuffel shift switch, fraction */ 49 PetscReal lu_shift_fraction; 50 PetscReal lu_zeropivot; 51 PetscScalar *saved_values; /* location for stashing nonzero values of matrix */ 52 PetscScalar *idiag,*ssor; /* inverse of diagonal entries; space for eisen */ 53 54 PetscTruth keepzeroedrows; /* keeps matrix structure same in calls to MatZeroRows()*/ 55 PetscTruth ignorezeroentries; 56 ISColoring coloring; /* set with MatADSetColoring() used by MatADSetValues() */ 57 Mat sbaijMat; /* mat in sbaij format */ 58 59 int *xtoy,*xtoyB; /* map nonzero pattern of X into Y's, used by MatAXPY() */ 60 Mat XtoY; /* used by MatAXPY() */ 61 } Mat_SeqAIJ; 62 63 EXTERN int MatILUFactorSymbolic_SeqAIJ(Mat,IS,IS,MatFactorInfo*,Mat *); 64 EXTERN int MatICCFactorSymbolic_SeqAIJ(Mat,IS,MatFactorInfo*,Mat *); 65 EXTERN int MatCholeskyFactorSymbolic_SeqAIJ(Mat,IS,MatFactorInfo*,Mat*); 66 EXTERN int MatCholeskyFactorNumeric_SeqAIJ(Mat,Mat *); 67 EXTERN int MatDuplicate_SeqAIJ(Mat,MatDuplicateOption,Mat*); 68 EXTERN int MatMarkDiagonal_SeqAIJ(Mat); 69 70 EXTERN int MatMult_SeqAIJ(Mat A,Vec,Vec); 71 EXTERN int MatMultAdd_SeqAIJ(Mat A,Vec,Vec,Vec); 72 EXTERN int MatMultTranspose_SeqAIJ(Mat A,Vec,Vec); 73 EXTERN int MatMultTransposeAdd_SeqAIJ(Mat A,Vec,Vec,Vec); 74 EXTERN int MatRelax_SeqAIJ(Mat,Vec,PetscReal,MatSORType,PetscReal,int,int,Vec); 75 76 EXTERN int MatSetColoring_SeqAIJ(Mat,ISColoring); 77 EXTERN int MatSetValuesAdic_SeqAIJ(Mat,void*); 78 EXTERN int MatSetValuesAdifor_SeqAIJ(Mat,int,void*); 79 80 EXTERN int MatGetSymbolicTranspose_SeqAIJ(Mat,int *[],int *[]); 81 EXTERN int MatRestoreSymbolicTranspose_SeqAIJ(Mat,int *[],int *[]); 82 83 #endif 84