GCC Code Coverage Report


Directory: ./
File: src/eps/tests/test30.c
Date: 2025-10-04 04:19:13
Exec Total Coverage
Lines: 38 38 100.0%
Functions: 1 1 100.0%
Branches: 127 190 66.8%

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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 static char help[] = "Test changing EPS type.\n\n";
12
13 #include <slepceps.h>
14
15 10 int main(int argc,char **argv)
16 {
17 10 Mat A; /* problem matrix */
18 10 EPS eps; /* eigenproblem solver context */
19 10 ST st;
20 10 KSP ksp;
21 10 PetscInt n=20,i,Istart,Iend,nrest;
22
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10 PetscFunctionBeginUser;
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10 PetscCall(SlepcInitialize(&argc,&argv,NULL,help));
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10 PetscCall(PetscPrintf(PETSC_COMM_WORLD,"\nDiagonal Eigenproblem, n=%" PetscInt_FMT "\n\n",n));
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10 PetscCall(MatCreate(PETSC_COMM_WORLD,&A));
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10 PetscCall(MatSetSizes(A,PETSC_DECIDE,PETSC_DECIDE,n,n));
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10 PetscCall(MatSetFromOptions(A));
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10 PetscCall(MatGetOwnershipRange(A,&Istart,&Iend));
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210 for (i=Istart;i<Iend;i++) PetscCall(MatSetValue(A,i,i,i+1,INSERT_VALUES));
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10 PetscCall(MatAssemblyBegin(A,MAT_FINAL_ASSEMBLY));
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10 PetscCall(MatAssemblyEnd(A,MAT_FINAL_ASSEMBLY));
34
35 /* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
36 Create eigensolver and view options
37 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
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10 PetscCall(EPSCreate(PETSC_COMM_WORLD,&eps));
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10 PetscCall(EPSSetOperators(eps,A,NULL));
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10 PetscCall(EPSSetProblemType(eps,EPS_HEP));
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10 PetscCall(EPSSetTarget(eps,4.8));
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10 PetscCall(EPSSetWhichEigenpairs(eps,EPS_TARGET_MAGNITUDE));
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10 PetscCall(EPSSetDimensions(eps,4,PETSC_DETERMINE,PETSC_DETERMINE));
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10 PetscCall(EPSSetType(eps,EPSRQCG));
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10 PetscCall(EPSRQCGSetReset(eps,10));
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10 PetscCall(EPSSetFromOptions(eps));
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10 PetscCall(EPSRQCGGetReset(eps,&nrest));
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10 PetscCall(PetscPrintf(PETSC_COMM_WORLD,"RQCG reset parameter = %" PetscInt_FMT "\n\n",nrest));
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10 PetscCall(EPSView(eps,NULL));
51
52 /* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
53 Change eigensolver type and solve problem
54 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
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10 PetscCall(EPSSetType(eps,EPSGD));
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10 PetscCall(EPSGetST(eps,&st));
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10 PetscCall(STGetKSP(st,&ksp));
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10 PetscCall(KSPSetType(ksp,KSPPREONLY));
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10 PetscCall(EPSSolve(eps));
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10 PetscCall(EPSView(eps,NULL));
61
62 /* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
63 Display solution and clean up
64 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
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10 PetscCall(EPSErrorView(eps,EPS_ERROR_RELATIVE,NULL));
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10 PetscCall(EPSDestroy(&eps));
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10 PetscCall(MatDestroy(&A));
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10 PetscCall(SlepcFinalize());
69 return 0;
70 }
71
72 /*TEST
73
74 test:
75 suffix: 1
76 args: -eps_harmonic -eps_conv_norm
77 filter: grep -v tolerance | sed -e "s/symmetric/hermitian/"
78
79 TEST*/
80