Actual source code: stimpl.h
1: /*
2: - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
3: SLEPc - Scalable Library for Eigenvalue Problem Computations
4: Copyright (c) 2002-2010, Universidad Politecnica de Valencia, Spain
6: This file is part of SLEPc.
7:
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: #ifndef _STIMPL
23: #define _STIMPL
25: #include slepceps.h
30: typedef struct _STOps *STOps;
32: struct _STOps {
33: PetscErrorCode (*setup)(ST);
34: PetscErrorCode (*apply)(ST,Vec,Vec);
35: PetscErrorCode (*getbilinearform)(ST,Mat*);
36: PetscErrorCode (*applytrans)(ST,Vec,Vec);
37: PetscErrorCode (*setshift)(ST,PetscScalar);
38: PetscErrorCode (*setfromoptions)(ST);
39: PetscErrorCode (*postsolve)(ST);
40: PetscErrorCode (*backtr)(ST,PetscInt,PetscScalar*,PetscScalar*);
41: PetscErrorCode (*destroy)(ST);
42: PetscErrorCode (*view)(ST,PetscViewer);
43: };
45: struct _p_ST {
46: PETSCHEADER(struct _STOps);
47: /*------------------------- User parameters --------------------------*/
48: Mat A,B; /* Matrices which define the eigensystem */
49: PetscScalar sigma; /* Value of the shift */
50: PetscTruth sigma_set; /* whether the user provided the shift or not */
51: PetscScalar defsigma; /* Default value of the shift */
52: STMatMode shift_matrix;
53: MatStructure str; /* whether matrices have the same pattern or not */
54: Mat mat;
56: /*------------------------- Misc data --------------------------*/
57: KSP ksp;
58: Vec w;
59: Vec D; /* diagonal matrix for balancing */
60: Vec wb; /* balancing requires an extra work vector */
61: void *data;
62: PetscInt setupcalled;
63: PetscInt lineariterations;
64: PetscInt applys;
65: PetscErrorCode (*checknullspace)(ST,PetscInt,const Vec[]);
66:
67: };
69: EXTERN PetscErrorCode STRegisterAll(char*);
70: EXTERN PetscErrorCode STInitializePackage(char*);
71: EXTERN PetscErrorCode STFinalizePackage(void);
73: EXTERN PetscErrorCode STGetBilinearForm_Default(ST,Mat*);
74: EXTERN PetscErrorCode STView_Default(ST,PetscViewer);
75: EXTERN PetscErrorCode STAssociatedKSPSolve(ST,Vec,Vec);
76: EXTERN PetscErrorCode STAssociatedKSPSolveTranspose(ST,Vec,Vec);
77: EXTERN PetscErrorCode STCheckNullSpace_Default(ST,PetscInt,const Vec[]);
78: EXTERN PetscErrorCode STMatShellCreate(ST st,Mat *mat);
80: #endif