/* $Id: petscoptions.h,v 1.46 2001/09/07 20:13:16 bsmith Exp $ */
/*
   Routines to determine options set in the options database.
*/
#if !defined(__PETSCOPTIONS_H)
#define __PETSCOPTIONS_H
#include "petsc.h"

EXTERN int  PetscOptionsHasName(const char[],const char[],PetscTruth*);
EXTERN int  PetscOptionsGetInt(const char[],const char [],int *,PetscTruth*);
EXTERN int  PetscOptionsGetLogical(const char[],const char [],PetscTruth *,PetscTruth*);
EXTERN int  PetscOptionsGetReal(const char[],const char[],PetscReal *,PetscTruth*);
EXTERN int  PetscOptionsGetScalar(const char[],const char[],PetscScalar *,PetscTruth*);
EXTERN int  PetscOptionsGetIntArray(const char[],const char[],int[],int *,PetscTruth*);
EXTERN int  PetscOptionsGetRealArray(const char[],const char[],PetscReal[],int *,PetscTruth*);
EXTERN int  PetscOptionsGetString(const char[],const char[],char[],int,PetscTruth*);
EXTERN int  PetscOptionsGetStringArray(const char[],const char[],char**,int*,PetscTruth*);

EXTERN int  PetscOptionsSetAlias(const char[],const char[]);
EXTERN int  PetscOptionsSetValue(const char[],const char[]);
EXTERN int  PetscOptionsClearValue(const char[]);

EXTERN int  PetscOptionsAllUsed(int *);
EXTERN int  PetscOptionsLeft(void);
EXTERN int  PetscOptionsPrint(FILE *);

EXTERN int  PetscOptionsCreate(void);
EXTERN int  PetscOptionsInsert(int *,char ***,const char[]);
EXTERN int  PetscOptionsInsertFile(const char[]);
EXTERN int  PetscOptionsInsertString(const char*);
EXTERN int  PetscOptionsDestroy(void);

EXTERN int  PetscOptionsReject(const char[],const char[]);
EXTERN int  PetscOptionsGetAll(char*[]);

EXTERN int  PetscOptionsGetenv(MPI_Comm,const char *,char[],int,PetscTruth *);
EXTERN int  PetscOptionsAtoi(const char[],int*);
EXTERN int  PetscOptionsAtod(const char[],PetscReal*);

extern PetscTruth PetscOptionsPublish;
extern int        PetscOptionsPublishCount;

/*MC
    PetscOptionsBegin - Begins a set of queries on the options database that are related and should be
     displayed on the same window of a GUI that allows the user to set the options interactively.

   Synopsis: int PetscOptionsBegin(MPI_Comm comm,char *prefix,char *title,char *mansec)

    Collective on MPI_Comm

  Input Parameters:
+   comm - communicator that shares GUI
.   prefix - options prefix for all options displayed on window
.   title - short descriptive text, for example "Krylov Solver Options"
-   mansec - section of manual pages for options, for example KSP

  Level: intermediate

  Notes: Needs to be ended by a call the PetscOptionsEnd()

         Can add subheadings with PetscOptionsHead()

.seealso: PetscOptionsGetReal(), PetscOptionsHasName(), PetscOptionsGetString(), PetscOptionsGetInt(),
          PetscOptionsGetIntArray(), PetscOptionsGetRealArray(), PetscOptionsLogical()
          PetscOptionsInt(), PetscOptionsString(), PetscOptionsReal(), PetscOptionsLogical(),
          PetscOptionsName(), PetscOptionsBegin(), PetscOptionsEnd(), PetscOptionsHead(),
          PetscOptionsStringArray(),PetscOptionsRealArray(), PetscOptionsScalar(),
          PetscOptionsLogicalGroupBegin(), PetscOptionsLogicalGroup(), PetscOptionsLogicalGroupEnd(),
          PetscOptionsList(), PetscOptionsEList()

M*/
#define    PetscOptionsBegin(comm,prefix,mess,sec) 0; {\
             for (PetscOptionsPublishCount=(PetscOptionsPublish?-1:1); PetscOptionsPublishCount<2; PetscOptionsPublishCount++) {\
             int _5_ierr = PetscOptionsBegin_Private(comm,prefix,mess,sec);CHKERRQ(_5_ierr);

/*MC
    PetscOptionsEnd - Ends a set of queries on the options database that are related and should be
     displayed on the same window of a GUI that allows the user to set the options interactively.

    Collective on the MPI_Comm used in PetscOptionsBegin()

   Synopsis: int PetscOptionsEnd(void)

  Level: intermediate

  Notes: Needs to be preceded by a call to PetscOptionsBegin()

.seealso: PetscOptionsGetReal(), PetscOptionsHasName(), PetscOptionsGetString(), PetscOptionsGetInt(),
          PetscOptionsGetIntArray(), PetscOptionsGetRealArray(), PetscOptionsLogical()
          PetscOptionsInt(), PetscOptionsString(), PetscOptionsReal(), PetscOptionsLogical(),
          PetscOptionsName(), PetscOptionsBegin(), PetscOptionsEnd(), PetscOptionsHead(),
          PetscOptionsStringArray(),PetscOptionsRealArray(), PetscOptionsScalar(),
          PetscOptionsLogicalGroupBegin(), PetscOptionsLogicalGroup(), PetscOptionsLogicalGroupEnd(),
          PetscOptionsList(), PetscOptionsEList()

M*/
#define    PetscOptionsEnd() _5_ierr = PetscOptionsEnd_Private();CHKERRQ(_5_ierr);}}

EXTERN int PetscOptionsBegin_Private(MPI_Comm,char*,char*,char*);
EXTERN int PetscOptionsEnd_Private(void);
EXTERN int PetscOptionsHead(char*);

/*MC
     PetscOptionsTail - Ends a section of options begun with PetscOptionsHead()
            See, for example, KSPSetFromOptions_GMRES().

   Collective on the communicator passed in PetscOptionsBegin()

   Synopsis: int PetscOptionsTail(void)

  Level: intermediate

   Notes: Must be between a PetscOptionsBegin() and a PetscOptionsEnd()

          Must be preceded by a call to PetscOptionsHead() in the same function.

   Concepts: options database^subheading

.seealso: PetscOptionsGetInt(), PetscOptionsGetReal(),  
           PetscOptionsHasName(), PetscOptionsGetIntArray(), PetscOptionsGetRealArray(), PetscOptionsLogical(),
          PetscOptionsName(), PetscOptionsBegin(), PetscOptionsEnd(), PetscOptionsHead(),
          PetscOptionsStringArray(),PetscOptionsRealArray(), PetscOptionsScalar(),
          PetscOptionsLogicalGroupBegin(), PetscOptionsLogicalGroup(), PetscOptionsLogicalGroupEnd(),
          PetscOptionsList(), PetscOptionsEList()
M*/
#define    PetscOptionsTail() 0; {if (PetscOptionsPublishCount != 1) PetscFunctionReturn(0);}

EXTERN int PetscOptionsInt(char*,char*,char*,int,int*,PetscTruth*);
EXTERN int PetscOptionsReal(char*,char*,char*,PetscReal,PetscReal*,PetscTruth*);
EXTERN int PetscOptionsScalar(char*,char*,char*,PetscScalar,PetscScalar*,PetscTruth*);
EXTERN int PetscOptionsName(char*,char*,char*,PetscTruth*);
EXTERN int PetscOptionsString(char*,char*,char*,char*,char*,int,PetscTruth*);
EXTERN int PetscOptionsLogical(char*,char*,char*,PetscTruth,PetscTruth*,PetscTruth*);
EXTERN int PetscOptionsLogicalGroupBegin(char*,char*,char*,PetscTruth*);
EXTERN int PetscOptionsLogicalGroup(char*,char*,char*,PetscTruth*);
EXTERN int PetscOptionsLogicalGroupEnd(char*,char*,char*,PetscTruth*);
EXTERN int PetscOptionsList(char*,char*,char*,PetscFList,char*,char*,int,PetscTruth*);
EXTERN int PetscOptionsEList(char*,char*,char*,char**,int,char*,char *,int,PetscTruth*);
EXTERN int PetscOptionsRealArray(char*,char*,char*,PetscReal[],int*,PetscTruth*);
EXTERN int PetscOptionsIntArray(char*,char*,char*,int[],int*,PetscTruth*);
EXTERN int PetscOptionsStringArray(char*,char*,char*,char**,int*,PetscTruth*);
#endif