1 /* $Id: aij.h,v 1.29 1996/08/08 14:42:46 bsmith Exp bsmith $ */ 2 3 #include "src/mat/matimpl.h" 4 #include <math.h> 5 6 #if !defined(__AIJ_H) 7 #define __AIJ_H 8 9 /* Info about i-nodes (identical nodes) */ 10 typedef struct { 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 } Mat_SeqAIJ_Inode; 16 17 /* 18 MATSEQAIJ format - Compressed row storage (also called Yale sparse matrix 19 format), compatible with Fortran. The i[] and j[] arrays start at 1, 20 or 0, depending on the value of shift. For example, in Fortran 21 j[i[k]+p+shift] 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 int sorted; /* if true, rows are sorted by increasing columns */ 27 int roworiented; /* if true, row-oriented input, default */ 28 int nonew; /* 1 don't add new nonzeros, -1 generate error on new */ 29 int singlemalloc; /* if true a, i, and j have been obtained with 30 one big malloc */ 31 int m, n; /* rows, columns */ 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 Scalar *a; /* nonzero elements */ 39 IS row, col; /* index sets, used for reorderings */ 40 Scalar *solve_work; /* work space used in MatSolve */ 41 void *spptr; /* pointer for special library like SuperLU */ 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 PetscTruth ilu_preserve_row_sums; 47 } Mat_SeqAIJ; 48 49 extern int MatILUFactorSymbolic_SeqAIJ(Mat,IS,IS,double,int,Mat *); 50 extern int MatConvert_SeqAIJ(Mat,MatType,Mat *); 51 extern int MatConvertSameType_SeqAIJ(Mat, Mat*,int); 52 extern int MatMarkDiag_SeqAIJ(Mat); 53 54 extern int MatMult_SeqAIJ(Mat A,Vec,Vec); 55 extern int MatMultAdd_SeqAIJ(Mat A,Vec,Vec,Vec); 56 extern int MatMultTrans_SeqAIJ(Mat A,Vec,Vec); 57 extern int MatMultTransAdd_SeqAIJ(Mat A,Vec,Vec,Vec); 58 extern int MatRelax_SeqAIJ(Mat,Vec,double,MatSORType,double,int,Vec); 59 60 #endif 61