Actual source code: dvdtestconv.c

slepc-3.7.2 2016-07-19
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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) 2002-2016, 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

 30: static PetscBool dvd_testconv_basic_0(dvdDashboard *d,PetscScalar eigvr,PetscScalar eigvi,PetscReal r,PetscReal *err)
 31: {
 32:   PetscBool conv;
 33:   PetscReal eig_norm,errest;

 36:   eig_norm = SlepcAbsEigenvalue(eigvr, eigvi);
 37:   errest = r/eig_norm;
 38:   conv = PetscNot(errest > d->tol);
 39:   if (err) *err = errest;
 40:   PetscFunctionReturn(conv);
 41: }

 45: PetscErrorCode dvd_testconv_basic(dvdDashboard *d, dvdBlackboard *b)
 46: {

 50:   /* Setup the step */
 51:   if (b->state >= DVD_STATE_CONF) {
 52:     PetscFree(d->testConv_data);
 53:     d->testConv = dvd_testconv_basic_0;
 54:   }
 55:   return(0);
 56: }

 60: static PetscBool dvd_testconv_slepc_0(dvdDashboard *d,PetscScalar eigvr,PetscScalar eigvi,PetscReal r,PetscReal *err)
 61: {

 65:   (*d->eps->converged)(d->eps,eigvr,eigvi,r,err,d->eps->convergedctx);CHKERRABORT(PetscObjectComm((PetscObject)d->eps),ierr);
 66:   PetscFunctionReturn(PetscNot(*err>=d->eps->tol));
 67: }

 71: PetscErrorCode dvd_testconv_slepc(dvdDashboard *d, dvdBlackboard *b)
 72: {

 76:   /* Setup the step */
 77:   if (b->state >= DVD_STATE_CONF) {
 78:     PetscFree(d->testConv_data);
 79:     d->testConv = dvd_testconv_slepc_0;
 80:   }
 81:   return(0);
 82: }