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#ifndef __SUPERLU_SUPERMATRIX /* allow multiple inclusions */
#define __SUPERLU_SUPERMATRIX
/********************************************
* The matrix types are defined as follows. *
********************************************/
typedef enum {
SLU_NC, /* column-wise, no supernode */
SLU_NR, /* row-wize, no supernode */
SLU_SC, /* column-wise, supernode */
SLU_SR, /* row-wise, supernode */
SLU_NCP, /* column-wise, column-permuted, no supernode
(The consecutive columns of nonzeros, after permutation,
may not be stored contiguously.) */
SLU_DN /* Fortran style column-wise storage for dense matrix */
} Stype_t;
typedef enum {
SLU_S, /* single */
SLU_D, /* double */
SLU_C, /* single complex */
SLU_Z /* double complex */
} Dtype_t;
typedef enum {
SLU_GE, /* general */
SLU_TRLU, /* lower triangular, unit diagonal */
SLU_TRUU, /* upper triangular, unit diagonal */
SLU_TRL, /* lower triangular */
SLU_TRU, /* upper triangular */
SLU_SYL, /* symmetric, store lower half */
SLU_SYU, /* symmetric, store upper half */
SLU_HEL, /* Hermitian, store lower half */
SLU_HEU /* Hermitian, store upper half */
} Mtype_t;
typedef struct {
Stype_t Stype; /* Storage type: interprets the storage structure
pointed to by *Store. */
Dtype_t Dtype; /* Data type. */
Mtype_t Mtype; /* Matrix type: describes the mathematical property of
the matrix. */
int_t nrow; /* number of rows */
int_t ncol; /* number of columns */
void *Store; /* pointer to the actual storage of the matrix */
} SuperMatrix;
/***********************************************
* The storage schemes are defined as follows. *
***********************************************/
/* Stype == NC (Also known as Harwell-Boeing sparse matrix format) */
typedef struct {
int_t nnz; /* number of nonzeros in the matrix */
void *nzval; /* pointer to array of nonzero values, packed by column */
int_t *rowind; /* pointer to array of row indices of the nonzeros */
int_t *colptr; /* pointer to array of beginning of columns in nzval[]
and rowind[] */
/* Note:
Zero-based indexing is used;
colptr[] has ncol+1 entries, the last one pointing
beyond the last column, so that colptr[ncol] = nnz. */
} NCformat;
/* Stype == NR (Also known as row compressed storage (RCS). */
typedef struct {
int_t nnz; /* number of nonzeros in the matrix */
void *nzval; /* pointer to array of nonzero values, packed by row */
int_t *colind; /* pointer to array of column indices of the nonzeros */
int_t *rowptr; /* pointer to array of beginning of rows in nzval[]
and colind[] */
/* Note:
Zero-based indexing is used;
nzval[] and colind[] are of the same length, nnz;
rowptr[] has nrow+1 entries, the last one pointing
beyond the last column, so that rowptr[nrow] = nnz. */
} NRformat;
/* Stype == SC */
typedef struct {
int_t nnz; /* number of nonzeros in the matrix */
int_t nsuper; /* number of supernodes, minus 1 */
void *nzval; /* pointer to array of nonzero values, packed by column */
int_t *nzval_colptr;/* pointer to array of beginning of columns in nzval[] */
int_t *rowind; /* pointer to array of compressed row indices of
rectangular supernodes */
int_t *rowind_colptr;/* pointer to array of beginning of columns in rowind[] */
int_t *col_to_sup; /* col_to_sup[j] is the supernode number to which column
j belongs; mapping from column to supernode number. */
int_t *sup_to_col; /* sup_to_col[s] points to the start of the s-th
supernode; mapping from supernode number to column.
e.g.: col_to_sup: 0 1 2 2 3 3 3 4 4 4 4 4 4 (ncol=12)
sup_to_col: 0 1 2 4 7 12 (nsuper=4) */
/* Note:
Zero-based indexing is used;
nzval_colptr[], rowind_colptr[], col_to_sup and
sup_to_col[] have ncol+1 entries, the last one
pointing beyond the last column.
For col_to_sup[], only the first ncol entries are
defined. For sup_to_col[], only the first nsuper+2
entries are defined. */
} SCformat;
/* Stype == NCP */
typedef struct {
int_t nnz; /* number of nonzeros in the matrix */
void *nzval; /* pointer to array of nonzero values, packed by column */
int_t *rowind;/* pointer to array of row indices of the nonzeros */
/* Note: nzval[]/rowind[] always have the same length */
int_t *colbeg;/* colbeg[j] points to the beginning of column j in nzval[]
and rowind[] */
int_t *colend;/* colend[j] points to one past the last element of column
j in nzval[] and rowind[] */
/* Note:
Zero-based indexing is used;
The consecutive columns of the nonzeros may not be
contiguous in storage, because the matrix has been
postmultiplied by a column permutation matrix. */
} NCPformat;
/* Stype == DN */
typedef struct {
int_t lda; /* leading dimension */
void *nzval; /* array of size lda*ncol to represent a dense matrix */
} DNformat;
/*********************************************************
* Macros used for easy access of sparse matrix entries. *
*********************************************************/
#define L_SUB_START(col) ( Lstore->rowind_colptr[col] )
#define L_SUB(ptr) ( Lstore->rowind[ptr] )
#define L_NZ_START(col) ( Lstore->nzval_colptr[col] )
#define L_FST_SUPC(superno) ( Lstore->sup_to_col[superno] )
#define U_NZ_START(col) ( Ustore->colptr[col] )
#define U_SUB(ptr) ( Ustore->rowind[ptr] )
#endif /* __SUPERLU_SUPERMATRIX */
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