Actual source code: dvd_testconv.c

slepc-3.5.2 2014-10-10
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  1: /*
  2:   SLEPc eigensolver: "davidson"

  4:   Step: test for convergence

  6:    - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
  7:    SLEPc - Scalable Library for Eigenvalue Problem Computations
  8:    Copyright (c) 2002-2014, Universitat Politecnica de Valencia, Spain

 10:    This file is part of SLEPc.

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

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

 21:    You  should have received a copy of the GNU Lesser General  Public  License
 22:    along with SLEPc. If not, see <http://www.gnu.org/licenses/>.
 23:    - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
 24: */

 26:  #include davidson.h

 28: static PetscBool dvd_testconv_basic_0(dvdDashboard*,PetscScalar,PetscScalar,PetscReal,PetscReal*);
 29: static PetscBool dvd_testconv_slepc_0(dvdDashboard*,PetscScalar,PetscScalar,PetscReal,PetscReal*);

 33: PetscErrorCode dvd_testconv_basic(dvdDashboard *d, dvdBlackboard *b)
 34: {

 38:   /* Setup the step */
 39:   if (b->state >= DVD_STATE_CONF) {
 40:     PetscFree(d->testConv_data);
 41:     d->testConv = dvd_testconv_basic_0;
 42:   }
 43:   return(0);
 44: }

 48: static PetscBool dvd_testconv_basic_0(dvdDashboard *d,PetscScalar eigvr,PetscScalar eigvi,PetscReal r,PetscReal *err)
 49: {
 50:   PetscBool conv;
 51:   PetscReal eig_norm, errest;

 54:   eig_norm = SlepcAbsEigenvalue(eigvr, eigvi);
 55:   errest = r/eig_norm;
 56:   conv = (errest <= d->tol) ? PETSC_TRUE : PETSC_FALSE;
 57:   if (err) *err = errest;
 58:   PetscFunctionReturn(conv);
 59: }

 63: PetscErrorCode dvd_testconv_slepc(dvdDashboard *d, dvdBlackboard *b)
 64: {

 68:   /* Setup the step */
 69:   if (b->state >= DVD_STATE_CONF) {
 70:     PetscFree(d->testConv_data);
 71:     d->testConv = dvd_testconv_slepc_0;
 72:   }
 73:   return(0);
 74: }

 78: static PetscBool dvd_testconv_slepc_0(dvdDashboard *d,PetscScalar eigvr,PetscScalar eigvi,PetscReal r,PetscReal *err)
 79: {

 83:   (*d->eps->converged)(d->eps, eigvr, eigvi, r, err, d->eps->convergedctx);
 84:   CHKERRABORT(PetscObjectComm((PetscObject)d->eps), ierr);
 85:   PetscFunctionReturn(*err<d->eps->tol ? PETSC_TRUE : PETSC_FALSE);
 86: }