Date: 2013-09-02T10:10:44+00:00

Actual source code: mfnimpl.h

      1: /*
      2:    - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
      3:    SLEPc - Scalable Library for Eigenvalue Problem Computations
      4:    Copyright (c) 2002-2013, Universitat Politecnica de Valencia, Spain

      6:    This file is part of SLEPc.

      8:    SLEPc is free software: you can redistribute it and/or modify it under  the
      9:    terms of version 3 of the GNU Lesser General Public License as published by
     10:    the Free Software Foundation.

     12:    SLEPc  is  distributed in the hope that it will be useful, but WITHOUT  ANY
     13:    WARRANTY;  without even the implied warranty of MERCHANTABILITY or  FITNESS
     14:    FOR  A  PARTICULAR PURPOSE. See the GNU Lesser General Public  License  for
     15:    more details.

     17:    You  should have received a copy of the GNU Lesser General  Public  License
     18:    along with SLEPc. If not, see <http://www.gnu.org/licenses/>.
     19:    - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
     20: */

     22: #if !defined(_MFNIMPL)
     23: #define _MFNIMPL

     25: #include <slepcmfn.h>
     26: #include <slepc-private/slepcimpl.h>

     28: PETSC_EXTERN PetscLogEvent MFN_SetUp, MFN_Solve;

     30: typedef struct _MFNOps *MFNOps;

     32: struct _MFNOps {
     33:   PetscErrorCode (*solve)(MFN,Vec,Vec);
     34:   PetscErrorCode (*setup)(MFN);
     35:   PetscErrorCode (*setfromoptions)(MFN);
     36:   PetscErrorCode (*publishoptions)(MFN);
     37:   PetscErrorCode (*destroy)(MFN);
     38:   PetscErrorCode (*reset)(MFN);
     39:   PetscErrorCode (*view)(MFN,PetscViewer);
     40: };

     42: /*
     43:      Maximum number of monitors you can run with a single MFN
     44: */
     45: #define MAXMFNMONITORS 5

     47: /*
     48:    Defines the MFN data structure.
     49: */
     50: struct _p_MFN {
     51:   PETSCHEADER(struct _MFNOps);
     52:   /*------------------------- User parameters --------------------------*/
     53:   PetscInt        max_it;         /* maximum number of iterations */
     54:   PetscInt        ncv;            /* number of basis vectors */
     55:   PetscReal       tol;            /* tolerance */
     56:   SlepcFunction   function;       /* which function to compute */
     57:   PetscScalar     sfactor;        /* scaling factor */
     58:   PetscBool       errorifnotconverged;    /* error out if MFNSolve() does not converge */

     60:   /*------------------------- Working data --------------------------*/
     61:   Mat             A;              /* the problem matrix */
     62:   Vec             *V;             /* set of basis vectors */
     63:   PetscReal       errest;         /* error estimate */
     64:   IP              ip;             /* innerproduct object */
     65:   DS              ds;             /* direct solver object */
     66:   void            *data;          /* placeholder for misc stuff associated
     67:                                      with a particular solver */
     68:   PetscInt        its;            /* number of iterations so far computed */
     69:   PetscInt        nv;             /* size of current Schur decomposition */
     70:   PetscInt        n,nloc;         /* problem dimensions (global, local) */
     71:   PetscInt        allocated_ncv;  /* number of basis vectors allocated */
     72:   PetscRandom     rand;           /* random number generator */
     73:   Vec             t;              /* template vector */

     75:   /* ---------------- Default work-area and status vars -------------------- */
     76:   PetscInt       nwork;
     77:   Vec            *work;

     79:   PetscInt       setupcalled;
     80:   MFNConvergedReason reason;

     82:   PetscErrorCode (*monitor[MAXMFNMONITORS])(MFN,PetscInt,PetscReal,void*);
     83:   PetscErrorCode (*monitordestroy[MAXMFNMONITORS])(void**);
     84:   void           *monitorcontext[MAXMFNMONITORS];
     85:   PetscInt       numbermonitors;
     86: };

     88: PETSC_INTERN PetscErrorCode MFNReset_Default(MFN);
     89: PETSC_INTERN PetscErrorCode MFNDefaultGetWork(MFN,PetscInt);
     90: PETSC_INTERN PetscErrorCode MFNDefaultFreeWork(MFN);
     91: PETSC_INTERN PetscErrorCode MFNAllocateSolution(MFN);
     92: PETSC_INTERN PetscErrorCode MFNFreeSolution(MFN);

     94: #endif