ssp_defs.h

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/*
 * -- SuperLU routine (version 3.0) --
 * Univ. of California Berkeley, Xerox Palo Alto Research Center,
 * and Lawrence Berkeley National Lab.
 * October 15, 2003
 *
 */
#ifndef __SUPERLU_sSP_DEFS /* allow multiple inclusions */
#define __SUPERLU_sSP_DEFS

/*
 * File name:       ssp_defs.h
 * Purpose:             Sparse matrix types and function prototypes
 * History:
 */

#ifdef _CRAY
#include <fortran.h>
#include <string.h>
#endif

/* Define my integer type int_t */
typedef int int_t; /* default */

#include "Cnames.h"
#include "supermatrix.h"
#include "util.h"


/*
 * Global data structures used in LU factorization -
 * 
 *   nsuper: #supernodes = nsuper + 1, numbered [0, nsuper].
 *   (xsup,supno): supno[i] is the supernode no to which i belongs;
 *  xsup(s) points to the beginning of the s-th supernode.
 *  e.g.   supno 0 1 2 2 3 3 3 4 4 4 4 4   (n=12)
 *          xsup 0 1 2 4 7 12
 *  Note: dfs will be performed on supernode rep. relative to the new 
 *        row pivoting ordering
 *
 *   (xlsub,lsub): lsub[*] contains the compressed subscript of
 *  rectangular supernodes; xlsub[j] points to the starting
 *  location of the j-th column in lsub[*]. Note that xlsub 
 *  is indexed by column.
 *  Storage: original row subscripts
 *
 *      During the course of sparse LU factorization, we also use
 *  (xlsub,lsub) for the purpose of symmetric pruning. For each
 *  supernode {s,s+1,...,t=s+r} with first column s and last
 *  column t, the subscript set
 *      lsub[j], j=xlsub[s], .., xlsub[s+1]-1
 *  is the structure of column s (i.e. structure of this supernode).
 *  It is used for the storage of numerical values.
 *  Furthermore,
 *      lsub[j], j=xlsub[t], .., xlsub[t+1]-1
 *  is the structure of the last column t of this supernode.
 *  It is for the purpose of symmetric pruning. Therefore, the
 *  structural subscripts can be rearranged without making physical
 *  interchanges among the numerical values.
 *
 *  However, if the supernode has only one column, then we
 *  only keep one set of subscripts. For any subscript interchange
 *  performed, similar interchange must be done on the numerical
 *  values.
 *
 *  The last column structures (for pruning) will be removed
 *  after the numercial LU factorization phase.
 *
 *   (xlusup,lusup): lusup[*] contains the numerical values of the
 *  rectangular supernodes; xlusup[j] points to the starting
 *  location of the j-th column in storage vector lusup[*]
 *  Note: xlusup is indexed by column.
 *  Each rectangular supernode is stored by column-major
 *  scheme, consistent with Fortran 2-dim array storage.
 *
 *   (xusub,ucol,usub): ucol[*] stores the numerical values of
 *  U-columns outside the rectangular supernodes. The row
 *  subscript of nonzero ucol[k] is stored in usub[k].
 *  xusub[i] points to the starting location of column i in ucol.
 *  Storage: new row subscripts; that is subscripts of PA.
 */
typedef struct {
    int     *xsup;    /* supernode and column mapping */
    int     *supno;   
    int     *lsub;    /* compressed L subscripts */
    int     *xlsub;
    float  *lusup;   /* L supernodes */
    int     *xlusup;
    float  *ucol;    /* U columns */
    int     *usub;
    int     *xusub;
    int     nzlmax;   /* current max size of lsub */
    int     nzumax;   /*    "    "    "      ucol */
    int     nzlumax;  /*    "    "    "     lusup */
    int     n;        /* number of columns in the matrix */
    LU_space_t MemModel; /* 0 - system malloc'd; 1 - user provided */
} GlobalLU_t;

typedef struct {
    float for_lu;
    float total_needed;
    int   expansions;
} mem_usage_t;

#ifdef __cplusplus
extern "C" {
#endif

/* Driver routines */
extern void
sgssv(superlu_options_t *, SuperMatrix *, int *, int *, SuperMatrix *,
      SuperMatrix *, SuperMatrix *, SuperLUStat_t *, int *);
extern void
sgssvx(superlu_options_t *, SuperMatrix *, int *, int *, int *,
       char *, float *, float *, SuperMatrix *, SuperMatrix *,
       void *, int, SuperMatrix *, SuperMatrix *,
       float *, float *, float *, float *,
       mem_usage_t *, SuperLUStat_t *, int *);

/* Supernodal LU factor related */
extern void
sCreate_CompCol_Matrix(SuperMatrix *, int, int, int, float *,
               int *, int *, Stype_t, Dtype_t, Mtype_t);
extern void
sCreate_CompRow_Matrix(SuperMatrix *, int, int, int, float *,
               int *, int *, Stype_t, Dtype_t, Mtype_t);
extern void
sCopy_CompCol_Matrix(SuperMatrix *, SuperMatrix *);
extern void
sCreate_Dense_Matrix(SuperMatrix *, int, int, float *, int,
             Stype_t, Dtype_t, Mtype_t);
extern void
sCreate_SuperNode_Matrix(SuperMatrix *, int, int, int, float *, 
                 int *, int *, int *, int *, int *,
             Stype_t, Dtype_t, Mtype_t);
extern void
sCopy_Dense_Matrix(int, int, float *, int, float *, int);

extern void    countnz (const int, int *, int *, int *, GlobalLU_t *);
extern void    fixupL (const int, const int *, GlobalLU_t *);

extern void    sallocateA (int, int, float **, int **, int **);
extern void    sgstrf (superlu_options_t*, SuperMatrix*, 
                       int, int, int*, void *, int, int *, int *, 
                       SuperMatrix *, SuperMatrix *, SuperLUStat_t*, int *);
extern int     ssnode_dfs (const int, const int, const int *, const int *,
                 const int *, int *, int *, GlobalLU_t *);
extern int     ssnode_bmod (const int, const int, float *,
                              float *, GlobalLU_t *, SuperLUStat_t*);
extern void    spanel_dfs (const int, const int, const int, SuperMatrix *,
               int *, int *, float *, int *, int *, int *,
               int *, int *, int *, int *, GlobalLU_t *);
extern void    spanel_bmod (const int, const int, const int, const int,
                           float *, float *, int *, int *,
               GlobalLU_t *, SuperLUStat_t*);
extern int     scolumn_dfs (const int, const int, int *, int *, int *, int *,
               int *, int *, int *, int *, int *, GlobalLU_t *);
extern int     scolumn_bmod (const int, const int, float *,
               float *, int *, int *, int,
                           GlobalLU_t *, SuperLUStat_t*);
extern int     scopy_to_ucol (int, int, int *, int *, int *,
                              float *, GlobalLU_t *);         
extern int     spivotL (const int, const float, int *, int *, 
                         int *, int *, int *, GlobalLU_t *, SuperLUStat_t*);
extern void    spruneL (const int, const int *, const int, const int,
              const int *, const int *, int *, GlobalLU_t *);
extern void    sreadmt (int *, int *, int *, float **, int **, int **);
extern void    sGenXtrue (int, int, float *, int);
extern void    sFillRHS (trans_t, int, float *, int, SuperMatrix *,
              SuperMatrix *);
extern void    sgstrs (trans_t, SuperMatrix *, SuperMatrix *, int *, int *,
                        SuperMatrix *, SuperLUStat_t*, int *);


/* Driver related */

extern void    sgsequ (SuperMatrix *, float *, float *, float *,
            float *, float *, int *);
extern void    slaqgs (SuperMatrix *, float *, float *, float,
                        float, float, char *);
extern void    sgscon (char *, SuperMatrix *, SuperMatrix *, 
                 float, float *, SuperLUStat_t*, int *);
extern float   sPivotGrowth(int, SuperMatrix *, int *, 
                            SuperMatrix *, SuperMatrix *);
extern void    sgsrfs (trans_t, SuperMatrix *, SuperMatrix *,
                       SuperMatrix *, int *, int *, char *, float *, 
                       float *, SuperMatrix *, SuperMatrix *,
                       float *, float *, SuperLUStat_t*, int *);

extern int     sp_strsv (char *, char *, char *, SuperMatrix *,
            SuperMatrix *, float *, SuperLUStat_t*, int *);
extern int     sp_sgemv (char *, float, SuperMatrix *, float *,
            int, float, float *, int);

extern int     sp_sgemm (char *, int, float,
            SuperMatrix *, float *, int, float, 
            float *, int);

/* Memory-related */
extern int     sLUMemInit (fact_t, void *, int, int, int, int, int,
                 SuperMatrix *, SuperMatrix *,
                 GlobalLU_t *, int **, float **);
extern void    sSetRWork (int, int, float *, float **, float **);
extern void    sLUWorkFree (int *, float *, GlobalLU_t *);
extern int     sLUMemXpand (int, int, MemType, int *, GlobalLU_t *);

extern float  *floatMalloc(int);
extern float  *floatCalloc(int);
extern int     smemory_usage(const int, const int, const int, const int);
extern int     sQuerySpace (SuperMatrix *, SuperMatrix *, mem_usage_t *);

/* Auxiliary routines */
extern void    sreadhb(int *, int *, int *, float **, int **, int **);
extern void    sCompRow_to_CompCol(int, int, int, float*, int*, int*,
                           float **, int **, int **);
extern void    sfill (float *, int, float);
extern void    sinf_norm_error (int, SuperMatrix *, float *);
extern void    PrintPerf (SuperMatrix *, SuperMatrix *, mem_usage_t *,
             float, float, float *, float *, char *);

/* Routines for debugging */
extern void    sPrint_CompCol_Matrix(char *, SuperMatrix *);
extern void    sPrint_SuperNode_Matrix(char *, SuperMatrix *);
extern void    sPrint_Dense_Matrix(char *, SuperMatrix *);
extern void    print_lu_col(char *, int, int, int *, GlobalLU_t *);
extern void    check_tempv(int, float *);
extern int      print_int_vec(char *what, int n, int *vec);

extern int      sp_symetree(int *acolst, int *acolend, int *arow, int n, int *parent);
extern void    sprint_lu_col(char *msg, int jcol, int pivrow, int *xprune, GlobalLU_t *Glu); // added to build with debug for blender - campbell
#ifdef __cplusplus
  }
#endif

#endif /* __SUPERLU_sSP_DEFS */