GCC Code Coverage Report

Directory: ./
File: src/nep/impls/nleigs/nleigs-fullb.c
Date: 2025-10-03 04:28:47
Exec Total Coverage
Lines: 336 356 94.4%
Functions: 11 13 84.6%
Branches: 970 1639 59.2%
Line Branch Exec Source
1 /*
2 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
3 SLEPc - Scalable Library for Eigenvalue Problem Computations
4 Copyright (c) 2002-, Universitat Politecnica de Valencia, Spain
5
6 This file is part of SLEPc.
7 SLEPc is distributed under a 2-clause BSD license (see LICENSE).
8 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
9 */
10 /*
11 Full basis for the linearization of the rational approximation of non-linear eigenproblems
12 */
13
14 #include <slepc/private/nepimpl.h> /*I "slepcnep.h" I*/
15 #include "nleigs.h"
16
17 840 static PetscErrorCode MatMult_FullBasis_Sinvert(Mat M,Vec x,Vec y)
18 {
19 840 NEP_NLEIGS *ctx;
20 840 NEP nep;
21 840 const PetscScalar *px;
22 840 PetscScalar *beta,*s,*xi,*t,*py,sigma;
23 840 PetscInt nmat,d,i,k,m;
24 840 Vec xx,xxx,yy,yyy,w,ww,www;
25
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 840 PetscFunctionBegin;
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 840 PetscCall(MatShellGetContext(M,&nep));
28 840 ctx = (NEP_NLEIGS*)nep->data;
29 840 beta = ctx->beta; s = ctx->s; xi = ctx->xi;
30 840 sigma = ctx->shifts[0];
31 840 nmat = ctx->nmat;
32 840 d = nmat-1;
33 840 m = nep->nloc;
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 840 PetscCall(PetscMalloc1(ctx->nmat,&t));
35 840 xx = ctx->w[0]; xxx = ctx->w[1]; yy = ctx->w[2]; yyy=ctx->w[3];
36 840 w = nep->work[0]; ww = nep->work[1]; www = nep->work[2];
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 840 PetscCall(VecGetArrayRead(x,&px));
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 840 PetscCall(VecGetArray(y,&py));
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 840 PetscCall(VecPlaceArray(xx,px+(d-1)*m));
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 840 PetscCall(VecPlaceArray(xxx,px+(d-2)*m));
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 840 PetscCall(VecPlaceArray(yy,py+(d-2)*m));
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 840 PetscCall(VecCopy(xxx,yy));
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 840 PetscCall(VecAXPY(yy,beta[d-1]/xi[d-2],xx));
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 840 PetscCall(VecScale(yy,1.0/(s[d-2]-sigma)));
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 840 PetscCall(VecResetArray(xx));
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 840 PetscCall(VecResetArray(xxx));
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 840 PetscCall(VecResetArray(yy));
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 1680 for (i=d-3;i>=0;i--) {
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 840 PetscCall(VecPlaceArray(xx,px+(i+1)*m));
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 840 PetscCall(VecPlaceArray(xxx,px+i*m));
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 840 PetscCall(VecPlaceArray(yy,py+i*m));
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 840 PetscCall(VecPlaceArray(yyy,py+(i+1)*m));
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 840 PetscCall(VecCopy(xxx,yy));
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 840 PetscCall(VecAXPY(yy,beta[i+1]/xi[i],xx));
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 840 PetscCall(VecAXPY(yy,-beta[i+1]*(1.0-sigma/xi[i]),yyy));
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 840 PetscCall(VecScale(yy,1.0/(s[i]-sigma)));
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 840 PetscCall(VecResetArray(xx));
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 840 PetscCall(VecResetArray(xxx));
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 840 PetscCall(VecResetArray(yy));
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 840 PetscCall(VecResetArray(yyy));
61 }
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 840 if (nep->fui==NEP_USER_INTERFACE_SPLIT) {
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 400 PetscCall(VecZeroEntries(w));
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 1600 for (k=0;k<nep->nt;k++) {
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 1200 PetscCall(VecZeroEntries(ww));
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 1200 PetscCall(VecPlaceArray(xx,px+(d-1)*m));
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 1200 PetscCall(VecAXPY(ww,-ctx->coeffD[k+nep->nt*d]/beta[d],xx));
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 1200 PetscCall(VecResetArray(xx));
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 3600 for (i=0;i<d-1;i++) {
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 2400 PetscCall(VecPlaceArray(yy,py+i*m));
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 2400 PetscCall(VecAXPY(ww,-ctx->coeffD[nep->nt*i+k],yy));
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 2400 PetscCall(VecResetArray(yy));
73 }
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 1200 PetscCall(MatMult(nep->A[k],ww,www));
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 1200 PetscCall(VecAXPY(w,1.0,www));
76 }
77 } else {
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 440 PetscCall(VecPlaceArray(xx,px+(d-1)*m));
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 440 PetscCall(MatMult(ctx->D[d],xx,w));
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 440 PetscCall(VecScale(w,-1.0/beta[d]));
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 440 PetscCall(VecResetArray(xx));
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 880 PetscCall(VecPlaceArray(yy,py+i*m));
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 880 PetscCall(MatMult(ctx->D[i],yy,ww));
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 880 PetscCall(VecResetArray(yy));
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 880 PetscCall(VecAXPY(w,-1.0,ww));
87 }
88 }
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 840 PetscCall(VecPlaceArray(yy,py+(d-1)*m));
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 840 PetscCall(KSPSolve(ctx->ksp[0],w,yy));
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 840 PetscCall(NEPNLEIGSEvalNRTFunct(nep,d-1,sigma,t));
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 1680 PetscCall(VecPlaceArray(yyy,py+i*m));
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 1680 PetscCall(VecAXPY(yyy,t[i],yy));
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 1680 PetscCall(VecResetArray(yyy));
96 }
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 840 PetscCall(VecScale(yy,t[d-1]));
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 840 PetscCall(VecResetArray(yy));
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 840 PetscCall(VecRestoreArrayRead(x,&px));
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 840 PetscCall(VecRestoreArray(y,&py));
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 840 PetscCall(PetscFree(t));
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 168 PetscFunctionReturn(PETSC_SUCCESS);
103 }
104
105 660 static PetscErrorCode MatMultTranspose_FullBasis_Sinvert(Mat M,Vec x,Vec y)
106 {
107 660 NEP_NLEIGS *ctx;
108 660 NEP nep;
109 660 const PetscScalar *px;
110 660 PetscScalar *beta,*s,*xi,*t,*py,sigma;
111 660 PetscInt nmat,d,i,k,m;
112 660 Vec xx,yy,yyy,w,z0;
113
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 660 PetscFunctionBegin;
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 660 PetscCall(MatShellGetContext(M,&nep));
116 660 ctx = (NEP_NLEIGS*)nep->data;
117 660 beta = ctx->beta; s = ctx->s; xi = ctx->xi;
118 660 sigma = ctx->shifts[0];
119 660 nmat = ctx->nmat;
120 660 d = nmat-1;
121 660 m = nep->nloc;
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 660 PetscCall(PetscMalloc1(ctx->nmat,&t));
123 660 xx = ctx->w[0]; yy = ctx->w[1]; yyy=ctx->w[2];
124 660 w = nep->work[0]; z0 = nep->work[1];
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 660 PetscCall(VecGetArrayRead(x,&px));
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 660 PetscCall(VecGetArray(y,&py));
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 660 PetscCall(NEPNLEIGSEvalNRTFunct(nep,d,sigma,t));
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 660 PetscCall(VecPlaceArray(xx,px+(d-1)*m));
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 660 PetscCall(VecCopy(xx,w));
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 660 PetscCall(VecScale(w,t[d-1]));
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 660 PetscCall(VecResetArray(xx));
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 1980 for (i=0;i<d-1;i++) {
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 1320 PetscCall(VecPlaceArray(xx,px+i*m));
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 1320 PetscCall(VecAXPY(w,t[i],xx));
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 1320 PetscCall(VecResetArray(xx));
136 }
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 660 PetscCall(KSPSolveTranspose(ctx->ksp[0],w,z0));
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 660 PetscCall(VecPlaceArray(yy,py));
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 660 if (nep->fui==NEP_USER_INTERFACE_SPLIT) {
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 400 PetscCall(VecZeroEntries(yy));
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 1600 for (k=0;k<nep->nt;k++) {
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 1200 PetscCall(MatMult(nep->A[k],z0,w));
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 1200 PetscCall(VecAXPY(yy,ctx->coeffD[k],w));
145 }
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 260 } else PetscCall(MatMultTranspose(ctx->D[0],z0,yy));
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 660 PetscCall(VecPlaceArray(xx,px));
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 660 PetscCall(VecAXPY(yy,-1.0,xx));
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 660 PetscCall(VecResetArray(xx));
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 660 PetscCall(VecScale(yy,-1.0/(s[0]-sigma)));
151
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 660 PetscCall(VecResetArray(yy));
152
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 1320 for (i=2;i<d;i++) {
153
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 660 PetscCall(VecPlaceArray(yy,py+(i-1)*m));
154
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 660 if (nep->fui==NEP_USER_INTERFACE_SPLIT) {
155
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 400 PetscCall(VecZeroEntries(yy));
156
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 1600 for (k=0;k<nep->nt;k++) {
157
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 1200 PetscCall(MatMult(nep->A[k],z0,w));
158
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 1200 PetscCall(VecAXPY(yy,ctx->coeffD[k+(i-1)*nep->nt],w));
159 }
160
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 260 } else PetscCall(MatMultTranspose(ctx->D[i-1],z0,yy));
161
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 660 PetscCall(VecPlaceArray(yyy,py+(i-2)*m));
162
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 660 PetscCall(VecAXPY(yy,beta[i-1]*(1.0-sigma/xi[i-2]),yyy));
163
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 660 PetscCall(VecResetArray(yyy));
164
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 660 PetscCall(VecPlaceArray(xx,px+(i-1)*m));
165
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 660 PetscCall(VecAXPY(yy,-1.0,xx));
166
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 660 PetscCall(VecResetArray(xx));
167
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 660 PetscCall(VecScale(yy,-1.0/(s[i-1]-sigma)));
168
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 660 PetscCall(VecResetArray(yy));
169 }
170
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 660 PetscCall(VecPlaceArray(yy,py+(d-1)*m));
171
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 660 if (nep->fui==NEP_USER_INTERFACE_SPLIT) {
172
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 400 PetscCall(VecZeroEntries(yy));
173
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 1600 for (k=0;k<nep->nt;k++) {
174
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 1200 PetscCall(MatMult(nep->A[k],z0,w));
175
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 1200 PetscCall(VecAXPY(yy,ctx->coeffD[k+d*nep->nt],w));
176 }
177
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 260 } else PetscCall(MatMultTranspose(ctx->D[d],z0,yy));
178
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 660 PetscCall(VecScale(yy,-1.0/beta[d]));
179
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 660 PetscCall(VecPlaceArray(yyy,py+(d-2)*m));
180
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 660 PetscCall(VecAXPY(yy,beta[d-1]/xi[d-2],yyy));
181
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 660 PetscCall(VecResetArray(yyy));
182
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 660 PetscCall(VecResetArray(yy));
183
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 1320 for (i=d-2;i>0;i--) {
185
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 660 PetscCall(VecPlaceArray(yyy,py+(i-1)*m));
186
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 660 PetscCall(VecPlaceArray(yy,py+i*m));
187
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 660 PetscCall(VecAXPY(yy,beta[i]/xi[i-1],yyy));
188
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 660 PetscCall(VecResetArray(yyy));
189
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 660 PetscCall(VecResetArray(yy));
190 }
191
192
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 660 PetscCall(VecRestoreArrayRead(x,&px));
193
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 660 PetscCall(VecRestoreArray(y,&py));
194
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 660 PetscCall(PetscFree(t));
195
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 132 PetscFunctionReturn(PETSC_SUCCESS);
196 }
197
198 16056 static PetscErrorCode BackTransform_FullBasis(ST st,PetscInt n,PetscScalar *eigr,PetscScalar *eigi)
199 {
200 16056 NEP nep;
201
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 16056 PetscFunctionBegin;
203
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 16056 PetscCall(STShellGetContext(st,&nep));
204
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 16056 PetscCall(NEPNLEIGSBackTransform((PetscObject)nep,n,eigr,eigi));
205
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 3209 PetscFunctionReturn(PETSC_SUCCESS);
206 }
207
208 840 static PetscErrorCode Apply_FullBasis(ST st,Vec x,Vec y)
209 {
210 840 NEP nep;
211 840 NEP_NLEIGS *ctx;
212
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 840 PetscFunctionBegin;
214
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 840 PetscCall(STShellGetContext(st,&nep));
215 840 ctx = (NEP_NLEIGS*)nep->data;
216
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 840 PetscCall(MatMult(ctx->A,x,y));
217
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 168 PetscFunctionReturn(PETSC_SUCCESS);
218 }
219
220 660 static PetscErrorCode ApplyTranspose_FullBasis(ST st,Vec x,Vec y)
221 {
222 660 NEP nep;
223 660 NEP_NLEIGS *ctx;
224
225
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 660 PetscFunctionBegin;
226
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 660 PetscCall(STShellGetContext(st,&nep));
227 660 ctx = (NEP_NLEIGS*)nep->data;
228
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 660 PetscCall(MatMultTranspose(ctx->A,x,y));
229
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 132 PetscFunctionReturn(PETSC_SUCCESS);
230 }
231
232 30 PetscErrorCode NEPSetUp_NLEIGS_FullBasis(NEP nep)
233 {
234 30 NEP_NLEIGS *ctx=(NEP_NLEIGS*)nep->data;
235 30 ST st;
236 30 Mat Q;
237 30 PetscInt i=0,deg=ctx->nmat-1;
238 30 PetscBool trackall,istrivial,ks;
239 30 PetscScalar *epsarray,*neparray;
240 30 Vec veps,w=NULL;
241 30 EPSWhich which;
242
243
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 30 PetscFunctionBegin;
244
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 30 PetscCheck(ctx->nshifts==0,PetscObjectComm((PetscObject)nep),PETSC_ERR_SUP,"The full-basis option is not supported with rational Krylov");
245
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 30 if (!ctx->eps) PetscCall(NEPNLEIGSGetEPS(nep,&ctx->eps));
246
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 30 PetscCall(EPSGetST(ctx->eps,&st));
247
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 30 PetscCall(EPSSetTarget(ctx->eps,nep->target));
248
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 30 PetscCall(STSetDefaultShift(st,nep->target));
249
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 30 if (!((PetscObject)ctx->eps)->type_name) PetscCall(EPSSetType(ctx->eps,EPSKRYLOVSCHUR));
250 else {
251
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 30 PetscCall(PetscObjectTypeCompare((PetscObject)ctx->eps,EPSKRYLOVSCHUR,&ks));
252
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 30 PetscCheck(ks,PetscObjectComm((PetscObject)nep),PETSC_ERR_SUP,"Full-basis option only implemented for Krylov-Schur");
253 }
254
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 30 PetscCall(STSetType(st,STSHELL));
255
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 30 PetscCall(STShellSetContext(st,nep));
256
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 30 PetscCall(STShellSetBackTransform(st,BackTransform_FullBasis));
257
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 30 PetscCall(KSPGetOperators(ctx->ksp[0],&Q,NULL));
258
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 30 PetscCall(MatCreateVecsEmpty(Q,&ctx->w[0],&ctx->w[1]));
259
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 30 PetscCall(MatCreateVecsEmpty(Q,&ctx->w[2],&ctx->w[3]));
260
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 30 PetscCall(MatCreateShell(PetscObjectComm((PetscObject)nep),deg*nep->nloc,deg*nep->nloc,deg*nep->n,deg*nep->n,nep,&ctx->A));
261
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 30 PetscCall(MatShellSetOperation(ctx->A,MATOP_MULT,(PetscErrorCodeFn*)MatMult_FullBasis_Sinvert));
262
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 30 PetscCall(MatShellSetOperation(ctx->A,MATOP_MULT_TRANSPOSE,(PetscErrorCodeFn*)MatMultTranspose_FullBasis_Sinvert));
263
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 30 PetscCall(STShellSetApply(st,Apply_FullBasis));
264
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 30 PetscCall(STShellSetApplyTranspose(st,ApplyTranspose_FullBasis));
265
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 30 PetscCall(EPSSetOperators(ctx->eps,ctx->A,NULL));
266
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 30 PetscCall(EPSSetProblemType(ctx->eps,EPS_NHEP));
267
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 30 switch (nep->which) {
268 case NEP_TARGET_MAGNITUDE: which = EPS_TARGET_MAGNITUDE; break;
269 ✗ case NEP_TARGET_REAL: which = EPS_TARGET_REAL; break;
270 ✗ case NEP_TARGET_IMAGINARY: which = EPS_TARGET_IMAGINARY; break;
271 ✗ case NEP_WHICH_USER: which = EPS_WHICH_USER;
272 ✗ PetscCall(EPSSetEigenvalueComparison(ctx->eps,nep->sc->comparison,nep->sc->comparisonctx));
273 break;
274 ✗ default: SETERRQ(PetscObjectComm((PetscObject)nep),PETSC_ERR_SUP,"Should set a target selection in NEPSetWhichEigenpairs()");
275 }
276
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 30 PetscCall(EPSSetWhichEigenpairs(ctx->eps,which));
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 30 PetscCall(RGIsTrivial(nep->rg,&istrivial));
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 30 if (!istrivial) PetscCall(EPSSetRG(ctx->eps,nep->rg));
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 30 PetscCall(EPSSetDimensions(ctx->eps,nep->nev,nep->ncv,nep->mpd));
280
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 30 PetscCall(EPSSetTolerances(ctx->eps,SlepcDefaultTol(nep->tol),nep->max_it));
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 30 PetscCall(EPSSetTwoSided(ctx->eps,nep->twosided));
282 /* Transfer the trackall option from pep to eps */
283
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 30 PetscCall(NEPGetTrackAll(nep,&trackall));
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 30 PetscCall(EPSSetTrackAll(ctx->eps,trackall));
285
286 /* process initial vector */
287
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 30 if (nep->nini<0) {
288
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 20 PetscCall(VecCreateMPI(PetscObjectComm((PetscObject)ctx->eps),deg*nep->nloc,deg*nep->n,&veps));
289
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 20 PetscCall(VecGetArray(veps,&epsarray));
290
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 80 for (i=0;i<deg;i++) {
291
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 60 if (i<-nep->nini) {
292
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 20 PetscCall(VecGetArray(nep->IS[i],&neparray));
293
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 20 PetscCall(PetscArraycpy(epsarray+i*nep->nloc,neparray,nep->nloc));
294
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 20 PetscCall(VecRestoreArray(nep->IS[i],&neparray));
295 } else {
296
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 40 if (!w) PetscCall(VecDuplicate(nep->IS[0],&w));
297
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 40 PetscCall(VecSetRandom(w,NULL));
298
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 40 PetscCall(VecGetArray(w,&neparray));
299
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 40 PetscCall(PetscArraycpy(epsarray+i*nep->nloc,neparray,nep->nloc));
300
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 60 PetscCall(VecRestoreArray(w,&neparray));
301 }
302 }
303
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 20 PetscCall(VecRestoreArray(veps,&epsarray));
304
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 20 PetscCall(EPSSetInitialSpace(ctx->eps,1,&veps));
305
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 20 PetscCall(VecDestroy(&veps));
306
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 20 PetscCall(VecDestroy(&w));
307
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 20 PetscCall(SlepcBasisDestroy_Private(&nep->nini,&nep->IS));
308 }
309
310
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 30 PetscCall(EPSSetUp(ctx->eps));
311
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 30 PetscCall(EPSGetDimensions(ctx->eps,NULL,&nep->ncv,&nep->mpd));
312
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 30 PetscCall(EPSGetTolerances(ctx->eps,NULL,&nep->max_it));
313
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 30 PetscCall(NEPAllocateSolution(nep,0));
314
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 6 PetscFunctionReturn(PETSC_SUCCESS);
315 }
316
317 /*
318 NEPNLEIGSExtract_None - Extracts the first block of the basis
319 and normalizes the columns.
320 */
321 30 static PetscErrorCode NEPNLEIGSExtract_None(NEP nep,EPS eps)
322 {
323 30 PetscInt i,k,m,d;
324 30 const PetscScalar *px;
325 30 PetscScalar sigma=nep->target,*b;
326 30 Mat A;
327 30 Vec xxr,xxi=NULL,w,t,xx;
328 30 PetscReal norm;
329 30 NEP_NLEIGS *ctx=(NEP_NLEIGS*)nep->data;
330
331
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 30 PetscFunctionBegin;
332 30 d = ctx->nmat-1;
333
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 30 PetscCall(EPSGetOperators(eps,&A,NULL));
334
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 30 PetscCall(MatCreateVecs(A,&xxr,NULL));
335 #if !defined(PETSC_USE_COMPLEX)
336
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 15 PetscCall(VecDuplicate(xxr,&xxi));
337 #endif
338 30 w = nep->work[0];
339
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 190 for (i=0;i<nep->nconv;i++) {
340
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 160 PetscCall(EPSGetEigenvector(eps,i,xxr,xxi));
341
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 160 PetscCall(VecGetArrayRead(xxr,&px));
342
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 160 PetscCall(VecPlaceArray(w,px));
343
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 160 PetscCall(BVInsertVec(nep->V,i,w));
344
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 160 PetscCall(BVNormColumn(nep->V,i,NORM_2,&norm));
345
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 160 PetscCall(BVScaleColumn(nep->V,i,1.0/norm));
346
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 160 PetscCall(VecResetArray(w));
347
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 160 PetscCall(VecRestoreArrayRead(xxr,&px));
348 }
349
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 30 if (nep->twosided) {
350
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 20 PetscCall(PetscMalloc1(ctx->nmat,&b));
351
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 20 PetscCall(NEPNLEIGSEvalNRTFunct(nep,d,sigma,b));
352 20 m = nep->nloc;
353 20 xx = ctx->w[0];
354 20 w = nep->work[0]; t = nep->work[1];
355
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 140 for (k=0;k<nep->nconv;k++) {
356
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 120 PetscCall(EPSGetLeftEigenvector(eps,k,xxr,xxi));
357
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 120 PetscCall(VecGetArrayRead(xxr,&px));
358
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 120 PetscCall(VecPlaceArray(xx,px+(d-1)*m));
359
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 120 PetscCall(VecCopy(xx,w));
360
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 120 PetscCall(VecScale(w,PetscConj(b[d-1])));
361
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 120 PetscCall(VecResetArray(xx));
362
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 360 for (i=0;i<d-1;i++) {
363
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 240 PetscCall(VecPlaceArray(xx,px+i*m));
364
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 240 PetscCall(VecAXPY(w,PetscConj(b[i]),xx));
365
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 240 PetscCall(VecResetArray(xx));
366 }
367
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 120 PetscCall(VecConjugate(w));
368
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 120 PetscCall(KSPSolveTranspose(ctx->ksp[0],w,t));
369
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 120 PetscCall(VecConjugate(t));
370
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 120 PetscCall(BVInsertVec(nep->W,k,t));
371
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 120 PetscCall(BVNormColumn(nep->W,k,NORM_2,&norm));
372
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 120 PetscCall(BVScaleColumn(nep->W,k,1.0/norm));
373
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 120 PetscCall(VecRestoreArrayRead(xxr,&px));
374 }
375
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 20 PetscCall(PetscFree(b));
376 }
377
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 30 PetscCall(VecDestroy(&xxr));
378 #if !defined(PETSC_USE_COMPLEX)
379
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 15 PetscCall(VecDestroy(&xxi));
380 #endif
381
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 6 PetscFunctionReturn(PETSC_SUCCESS);
382 }
383
384 30 PetscErrorCode NEPSolve_NLEIGS_FullBasis(NEP nep)
385 {
386 30 NEP_NLEIGS *ctx = (NEP_NLEIGS*)nep->data;
387 30 PetscInt i;
388 30 PetscScalar eigi=0.0;
389
390
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 30 PetscFunctionBegin;
391
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 30 PetscCall(EPSSolve(ctx->eps));
392
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 30 PetscCall(EPSGetConverged(ctx->eps,&nep->nconv));
393
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 30 PetscCall(EPSGetIterationNumber(ctx->eps,&nep->its));
394
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 30 PetscCall(EPSGetConvergedReason(ctx->eps,(EPSConvergedReason*)&nep->reason));
395
396 /* recover eigenvalues */
397
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 190 for (i=0;i<nep->nconv;i++) {
398
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 160 PetscCall(EPSGetEigenpair(ctx->eps,i,&nep->eigr[i],&eigi,NULL,NULL));
399 #if !defined(PETSC_USE_COMPLEX)
400
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 80 PetscCheck(eigi==0.0,PetscObjectComm((PetscObject)nep),PETSC_ERR_SUP,"Complex value requires complex arithmetic");
401 #endif
402 }
403
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 30 PetscCall(NEPNLEIGSExtract_None(nep,ctx->eps));
404
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 6 PetscFunctionReturn(PETSC_SUCCESS);
405 }
406
407 ✗ PetscErrorCode NEPNLEIGSSetEPS_NLEIGS(NEP nep,EPS eps)
408 {
409 ✗ NEP_NLEIGS *ctx=(NEP_NLEIGS*)nep->data;
410
411 ✗ PetscFunctionBegin;
412 ✗ PetscCall(PetscObjectReference((PetscObject)eps));
413 ✗ PetscCall(EPSDestroy(&ctx->eps));
414 ✗ ctx->eps = eps;
415 ✗ nep->state = NEP_STATE_INITIAL;
416 ✗ PetscFunctionReturn(PETSC_SUCCESS);
417 }
418
419 /*@
420 NEPNLEIGSSetEPS - Associate an eigensolver object (EPS) to the NLEIGS solver.
421
422 Collective
423
424 Input Parameters:
425 + nep - nonlinear eigenvalue solver
426 - eps - the eigensolver object
427
428 Level: advanced
429
430 .seealso: NEPNLEIGSGetEPS()
431 @*/
432 ✗ PetscErrorCode NEPNLEIGSSetEPS(NEP nep,EPS eps)
433 {
434 ✗ PetscFunctionBegin;
435 ✗ PetscValidHeaderSpecific(nep,NEP_CLASSID,1);
436 ✗ PetscValidHeaderSpecific(eps,EPS_CLASSID,2);
437 ✗ PetscCheckSameComm(nep,1,eps,2);
438 ✗ PetscTryMethod(nep,"NEPNLEIGSSetEPS_C",(NEP,EPS),(nep,eps));
439 ✗ PetscFunctionReturn(PETSC_SUCCESS);
440 }
441
442 60 static PetscErrorCode EPSMonitor_NLEIGS(EPS eps,PetscInt its,PetscInt nconv,PetscScalar *eigr,PetscScalar *eigi,PetscReal *errest,PetscInt nest,void *ctx)
443 {
444 60 NEP nep = (NEP)ctx;
445 60 PetscInt i,nv = PetscMin(nest,nep->ncv);
446
447
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 60 PetscFunctionBegin;
448
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 1290 for (i=0;i<nv;i++) {
449 1230 nep->eigr[i] = eigr[i];
450 1230 nep->eigi[i] = eigi[i];
451 1230 nep->errest[i] = errest[i];
452 }
453
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 60 PetscCall(NEPNLEIGSBackTransform((PetscObject)nep,nv,nep->eigr,nep->eigi));
454
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 60 PetscCall(NEPMonitor(nep,its,nconv,nep->eigr,nep->eigi,nep->errest,nest));
455
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 12 PetscFunctionReturn(PETSC_SUCCESS);
456 }
457
458 30 PetscErrorCode NEPNLEIGSGetEPS_NLEIGS(NEP nep,EPS *eps)
459 {
460 30 NEP_NLEIGS *ctx=(NEP_NLEIGS*)nep->data;
461
462
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 30 PetscFunctionBegin;
463
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 30 if (!ctx->eps) {
464
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 30 PetscCall(EPSCreate(PetscObjectComm((PetscObject)nep),&ctx->eps));
465
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 30 PetscCall(PetscObjectIncrementTabLevel((PetscObject)ctx->eps,(PetscObject)nep,1));
466
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 30 PetscCall(EPSSetOptionsPrefix(ctx->eps,((PetscObject)nep)->prefix));
467
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 30 PetscCall(EPSAppendOptionsPrefix(ctx->eps,"nep_nleigs_"));
468
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 30 PetscCall(PetscObjectSetOptions((PetscObject)ctx->eps,((PetscObject)nep)->options));
469
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 30 PetscCall(EPSMonitorSet(ctx->eps,EPSMonitor_NLEIGS,nep,NULL));
470 }
471 30 *eps = ctx->eps;
472
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 30 PetscFunctionReturn(PETSC_SUCCESS);
473 }
474
475 /*@
476 NEPNLEIGSGetEPS - Retrieve the eigensolver object (EPS) associated
477 to the nonlinear eigenvalue solver.
478
479 Collective
480
481 Input Parameter:
482 . nep - nonlinear eigenvalue solver
483
484 Output Parameter:
485 . eps - the eigensolver object
486
487 Level: advanced
488
489 .seealso: NEPNLEIGSSetEPS()
490 @*/
491 30 PetscErrorCode NEPNLEIGSGetEPS(NEP nep,EPS *eps)
492 {
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 30 PetscFunctionBegin;
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 30 PetscValidHeaderSpecific(nep,NEP_CLASSID,1);
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 30 PetscAssertPointer(eps,2);
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 30 PetscUseMethod(nep,"NEPNLEIGSGetEPS_C",(NEP,EPS*),(nep,eps));
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 30 PetscFunctionReturn(PETSC_SUCCESS);
498 }
499