Date: 2017-05-17T08:27:48+00:00

Actual source code: stimpl.h
slepc-3.7.4 2017-05-17
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      1: /*
      2:    - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
      3:    SLEPc - Scalable Library for Eigenvalue Problem Computations
      4:    Copyright (c) , 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(_STIMPL)
     23: #define _STIMPL

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

     28: PETSC_EXTERN PetscBool STRegisterAllCalled;
     29: PETSC_EXTERN PetscErrorCode STRegisterAll(void);
     30: PETSC_EXTERN PetscLogEvent ST_SetUp,ST_Apply,ST_ApplyTranspose,ST_MatSetUp,ST_MatMult,ST_MatMultTranspose,ST_MatSolve,ST_MatSolveTranspose;

     32: typedef struct _STOps *STOps;

     34: struct _STOps {
     35:   PetscErrorCode (*setup)(ST);
     36:   PetscErrorCode (*apply)(ST,Vec,Vec);
     37:   PetscErrorCode (*getbilinearform)(ST,Mat*);
     38:   PetscErrorCode (*applytrans)(ST,Vec,Vec);
     39:   PetscErrorCode (*setshift)(ST,PetscScalar);
     40:   PetscErrorCode (*setfromoptions)(PetscOptionItems*,ST);
     41:   PetscErrorCode (*postsolve)(ST);
     42:   PetscErrorCode (*backtransform)(ST,PetscInt,PetscScalar*,PetscScalar*);
     43:   PetscErrorCode (*destroy)(ST);
     44:   PetscErrorCode (*reset)(ST);
     45:   PetscErrorCode (*view)(ST,PetscViewer);
     46:   PetscErrorCode (*checknullspace)(ST,BV);
     47: };

     49: /*
     50:      'Updated' state means STSetUp must be called because matrices have been
     51:      modified, but the pattern is the same (hence reuse symbolic factorization)
     52: */
     53: typedef enum { ST_STATE_INITIAL,
     54:                ST_STATE_SETUP,
     55:                ST_STATE_UPDATED } STStateType;

     57: struct _p_ST {
     58:   PETSCHEADER(struct _STOps);
     59:   /*------------------------- User parameters --------------------------*/
     60:   Mat              *A;               /* matrices that define the eigensystem */
     61:   PetscObjectState *Astate;          /* state (to identify the original matrices) */
     62:   Mat              *T;               /* matrices resulting from transformation */
     63:   Mat              P;                /* matrix from which preconditioner is built */
     64:   PetscInt         nmat;             /* number of matrices */
     65:   PetscScalar      sigma;            /* value of the shift */
     66:   PetscBool        sigma_set;        /* whether the user provided the shift or not */
     67:   PetscScalar      defsigma;         /* default value of the shift */
     68:   STMatMode        shift_matrix;
     69:   MatStructure     str;              /* whether matrices have the same pattern or not */
     70:   PetscBool        transform;        /* whether transformed matrices are computed */

     72:   /*------------------------- Misc data --------------------------*/
     73:   KSP              ksp;
     74:   Vec              w;                /* work vector used in apply operation */
     75:   Vec              D;                /* diagonal matrix for balancing */
     76:   Vec              wb;               /* balancing requires an extra work vector */
     77:   void             *data;
     78:   STStateType      state;            /* initial -> setup -> with updated matrices */
     79: };

     83: /*
     84:   ST_AllocateWorkVec - Allocate work vector for the STApply operation.
     85: */
     86: PETSC_STATIC_INLINE PetscErrorCode ST_AllocateWorkVec(ST st)
     87: {

     91:   if (!st->w) {
     92:     MatCreateVecs(st->A[0],&st->w,NULL);
     93:     PetscLogObjectParent((PetscObject)st,(PetscObject)st->w);
     94:   }
     95:   return(0);
     96: }

     98: /*
     99:     Macros to test valid ST arguments
    100: */
    101: #if !defined(PETSC_USE_DEBUG)

    103: #define STCheckMatrices(h,arg) do {} while (0)

    105: #else

    107: #define STCheckMatrices(h,arg) \
    108:   do { \
    109:     if (!h->A) SETERRQ1(PetscObjectComm((PetscObject)h),PETSC_ERR_ARG_WRONGSTATE,"ST matrices have not been set: Parameter #%d",arg); \
    110:   } while (0)

    112: #endif

    114: PETSC_INTERN PetscErrorCode STGetBilinearForm_Default(ST,Mat*);
    115: PETSC_INTERN PetscErrorCode STCheckNullSpace_Default(ST,BV);
    116: PETSC_INTERN PetscErrorCode STMatShellCreate(ST,PetscScalar,PetscInt,PetscInt*,PetscScalar*,Mat*);
    117: PETSC_INTERN PetscErrorCode STMatShellShift(Mat,PetscScalar);
    118: PETSC_INTERN PetscErrorCode STMatSetHermitian(ST,Mat);
    119: PETSC_INTERN PetscErrorCode STCheckFactorPackage(ST);
    120: PETSC_INTERN PetscErrorCode STMatMAXPY_Private(ST,PetscScalar,PetscScalar,PetscInt,PetscScalar*,PetscBool,Mat*);
    121: PETSC_INTERN PetscErrorCode STCoeffs_Monomial(ST,PetscScalar*);

    123: #endif