1*d5d45c9bSBarry Smith /* $Id: aij.h,v 1.16 1995/10/24 21:45:28 bsmith Exp bsmith $ */ 2b8a66259SBarry Smith 3b8a66259SBarry Smith #include "matimpl.h" 40068c123SLois Curfman McInnes #include <math.h> 5b8a66259SBarry Smith 62d40f771SBarry Smith #if !defined(__AIJ_H) 72d40f771SBarry Smith #define __AIJ_H 82d40f771SBarry Smith 92d40f771SBarry Smith /* 10ec8511deSBarry Smith MATSEQAIJ format - Compressed row storage (also called Yale sparse matrix 11d35516d3SLois Curfman McInnes format), compatible with Fortran. The i[] and j[] arrays start at 1, 12*d5d45c9bSBarry Smith or 0, depending on the value of shift. For example, in Fortran 1363b91edcSBarry Smith j[i[k]+p+shift] is the pth column in row k. 142d40f771SBarry Smith */ 15d35516d3SLois Curfman McInnes 16b8a66259SBarry Smith typedef struct { 17d35516d3SLois Curfman McInnes int sorted; /* if true, rows are sorted by increasing columns */ 18d35516d3SLois Curfman McInnes int roworiented; /* if true, row-oriented storage */ 19d35516d3SLois Curfman McInnes int nonew; /* if true, don't allow new elements to be added */ 20d35516d3SLois Curfman McInnes int singlemalloc; /* if true a, i, and j have been obtained with 21d35516d3SLois Curfman McInnes one big malloc */ 22d35516d3SLois Curfman McInnes int assembled; /* if true, matrix is fully assembled */ 231a1c3055SLois Curfman McInnes int m, n; /* rows, columns */ 2480b4ade8SLois Curfman McInnes int nz, maxnz; /* nonzeros, allocated nonzeros */ 25d35516d3SLois Curfman McInnes int *diag; /* pointers to diagonal elements */ 26d35516d3SLois Curfman McInnes int *i; /* pointer to beginning of each row */ 27d35516d3SLois Curfman McInnes int *imax; /* maximum space allocated for each row */ 28d35516d3SLois Curfman McInnes int *ilen; /* actual length of each row */ 29d35516d3SLois Curfman McInnes int *j; /* column values: j + i[k] - 1 is start of row k */ 30d35516d3SLois Curfman McInnes Scalar *a; /* nonzero elements */ 31d35516d3SLois Curfman McInnes IS row, col; /* index sets, used for reorderings */ 32f6fb444dSLois Curfman McInnes Scalar *solve_work; /* work space used in MatSolve */ 33dbb450caSBarry Smith void *spptr; /* pointer for special library like SuperLU */ 34dbb450caSBarry Smith int indexshift; /* zero or -one for C or Fortran indexing */ 35ec8511deSBarry Smith } Mat_SeqAIJ; 36b8a66259SBarry Smith 3708480c60SBarry Smith extern int MatILUFactorSymbolic_SeqAIJ(Mat,IS,IS,double,int,Mat *); 3808480c60SBarry Smith extern int MatConvert_SeqAIJ(Mat,MatType,Mat *); 3908480c60SBarry Smith extern int MatCopyPrivate_SeqAIJ(Mat, Mat*,int); 4008480c60SBarry Smith extern int MatMarkDiag_SeqAIJ(Mat); 4108480c60SBarry Smith 4208480c60SBarry Smith 432d40f771SBarry Smith #endif 44