/* $Id: vec.h,v 1.70 1998/03/12 23:25:24 bsmith Exp bsmith $ */
/* 
    Defines the vector component of PETSc. Vectors generally represent 
  degrees of freedom for finite element/finite difference functions
  on a grid. They have more mathematical structure then simple arrays.
*/

#ifndef __VEC_PACKAGE 
#define __VEC_PACKAGE
#include "is.h"
#include "sys.h"

#define VEC_COOKIE         PETSC_COOKIE+3
#define VEC_SCATTER_COOKIE PETSC_COOKIE+4

typedef enum {VECSAME=-1, VECSEQ, VECMPI} VecType;

typedef struct _p_Vec*         Vec;
typedef struct _p_VecScatter*  VecScatter;

extern int VecCreateSeq(MPI_Comm,int,Vec*);  
extern int VecCreateMPI(MPI_Comm,int,int,Vec*);  
extern int VecCreateSeqWithArray(MPI_Comm,int,Scalar*,Vec*);  
extern int VecCreateMPIWithArray(MPI_Comm,int,int,Scalar*,Vec*);  
extern int VecCreate(MPI_Comm,int,int,Vec*); 
extern int VecCreateShared(MPI_Comm,int,int,Vec*);  

extern int VecDestroy(Vec);        

extern int VecDot(Vec,Vec,Scalar*);
extern int VecTDot(Vec,Vec,Scalar*);  
extern int VecMDot(int,Vec,Vec*,Scalar*);
extern int VecMTDot(int,Vec,Vec*,Scalar*); 

typedef enum {NORM_1=1,NORM_2=2,NORM_FROBENIUS=3,NORM_INFINITY=4,NORM_1_AND_2=5} NormType;
#define NORM_MAX NORM_INFINITY
extern int VecNorm(Vec,NormType,double *);
extern int VecSum(Vec,Scalar*);
extern int VecMax(Vec,int*,double*);
extern int VecMin(Vec,int*,double*);
extern int VecScale(Scalar*,Vec);    
extern int VecCopy(Vec,Vec);        
extern int VecSetRandom(PetscRandom,Vec);
extern int VecSet(Scalar*,Vec);
extern int VecSwap(Vec,Vec);
extern int VecAXPY(Scalar*,Vec,Vec);  
extern int VecAXPBY(Scalar*,Scalar *,Vec,Vec);  
extern int VecMAXPY(int,Scalar*,Vec,Vec*);
extern int VecAYPX(Scalar*,Vec,Vec);
extern int VecWAXPY(Scalar*,Vec,Vec,Vec);
extern int VecPointwiseMult(Vec,Vec,Vec);    
extern int VecPointwiseDivide(Vec,Vec,Vec);    
extern int VecShift(Scalar*,Vec);
extern int VecReciprocal(Vec);
extern int VecAbs(Vec);
extern int VecDuplicate(Vec,Vec*);          
extern int VecDuplicateVecs(Vec,int,Vec**);         
extern int VecDestroyVecs(Vec*,int); 

typedef enum {NOT_SET_VALUES, INSERT_VALUES, ADD_VALUES, MAX_VALUES} InsertMode;
extern int VecSetValues(Vec,int,int*,Scalar*,InsertMode);
extern int VecAssemblyBegin(Vec);
extern int VecAssemblyEnd(Vec);
#define VecSetValue(v,i,va,mode) \
{int _ierr,_row = i; Scalar _va = va; \
  _ierr = VecSetValues(v,1,&_row,&_va,mode);CHKERRQ(_ierr); \
}
extern int VecSetBlockSize(Vec,int);
extern int VecSetValuesBlocked(Vec,int,int*,Scalar*,InsertMode);

typedef enum {SCATTER_FORWARD=0,SCATTER_REVERSE=1,SCATTER_FORWARD_LOCAL=2,
              SCATTER_REVERSE_LOCAL=3,SCATTER_LOCAL=2} ScatterMode;
extern int VecScatterCreate(Vec,IS,Vec,IS,VecScatter *);
extern int VecScatterPostRecvs(Vec,Vec,InsertMode,ScatterMode,VecScatter);
extern int VecScatterBegin(Vec,Vec,InsertMode,ScatterMode,VecScatter);
extern int VecScatterEnd(Vec,Vec,InsertMode,ScatterMode,VecScatter); 
extern int VecScatterDestroy(VecScatter);
extern int VecScatterCopy(VecScatter,VecScatter *);
extern int VecScatterView(VecScatter,Viewer);
extern int VecScatterRemap(VecScatter,int *,int*);

extern int VecGetArray(Vec,Scalar**);
extern int VecRestoreArray(Vec,Scalar**);
extern int VecPlaceArray(Vec,Scalar*);
extern int VecGetArrays(Vec*,int,Scalar***);
extern int VecRestoreArrays(Vec*,int,Scalar***);

extern int VecValid(Vec,PetscTruth*);
extern int VecView(Vec,Viewer);
extern int VecEqual(Vec,Vec,PetscTruth*);
extern int VecLoad(Viewer,Vec*);

extern int VecGetSize(Vec,int*);
extern int VecGetType(Vec,VecType*,char**);
extern int VecGetLocalSize(Vec,int*);
extern int VecGetOwnershipRange(Vec,int*,int*);

extern int VecSetLocalToGlobalMapping(Vec, ISLocalToGlobalMapping);
extern int VecSetValuesLocal(Vec,int,int*,Scalar*,InsertMode);
extern int VecSetLocalToGlobalMappingBlocked(Vec, ISLocalToGlobalMapping);
extern int VecSetValuesBlockedLocal(Vec,int,int*,Scalar*,InsertMode);

typedef enum {VEC_IGNORE_OFF_PROC_ENTRIES} VecOption;
extern int VecSetOption(Vec,VecOption);

extern int VecContourScale(Vec,double,double);

/*
     Routines for dealing with ghosted vectors:
  vectors with ghost elements at the end of the array.
*/
extern int VecCreateGhost(MPI_Comm,int,int,int,int*,Vec*);  
extern int VecCreateGhostWithArray(MPI_Comm,int,int,int,int*,Scalar*,Vec*);  
extern int VecGhostGetLocalRepresentation(Vec,Vec*);
extern int VecGhostRestoreLocalRepresentation(Vec,Vec*);
extern int VecGhostUpdateBegin(Vec,InsertMode,ScatterMode);
extern int VecGhostUpdateEnd(Vec,InsertMode,ScatterMode);


extern int DrawTensorContour(Draw,int,int,double *,double *,Vec);

#endif