
/*
 * -- SuperLU routine (version 3.0) --
 * Univ. of California Berkeley, Xerox Palo Alto Research Center,
 * and Lawrence Berkeley National Lab.
 * October 15, 2003
 *
 */
/*
Copyright (c) 2003, The Regents of the University of California, through
Lawrence Berkeley National Laboratory (subject to receipt of any required 
approvals from U.S. Dept. of Energy) 

All rights reserved. 

The source code is distributed under BSD license, see the file License.txt
*/
#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 "slu_Cnames.h"
#include "supermatrix.h"
#include "slu_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*, float, 
                       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, 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 *, char *, int, int, 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 *);

#ifdef __cplusplus
  }
#endif

#endif /* __SUPERLU_sSP_DEFS */

