GCC Code Coverage Report

Directory: ./
File: src/nep/tests/test8.c
Date: 2025-11-19 04:19:03
Exec Total Coverage
Lines: 83 83 100.0%
Functions: 1 1 100.0%
Branches: 261 388 67.3%
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 static char help[] = "Test NEP view and monitor functionality.\n\n";
12
13 #include <slepcnep.h>
14
15 38 int main(int argc,char **argv)
16 {
17 38 Mat A[3];
18 38 FN f[3];
19 38 NEP nep;
20 38 Vec xr,xi;
21 38 PetscScalar kr,ki,coeffs[3];
22 38 PetscInt n=6,i,Istart,Iend,nconv,its;
23 38 PetscReal errest;
24 38 PetscBool checkfile;
25 38 char filename[PETSC_MAX_PATH_LEN];
26 38 PetscViewer viewer;
27
28
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 38 PetscFunctionBeginUser;
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 38 PetscCall(SlepcInitialize(&argc,&argv,NULL,help));
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 38 PetscCall(PetscPrintf(PETSC_COMM_WORLD,"\nDiagonal Nonlinear Eigenproblem, n=%" PetscInt_FMT "\n\n",n));
31
32 /* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
33 Generate the matrices
34 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
35
36
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 38 PetscCall(MatCreate(PETSC_COMM_WORLD,&A[0]));
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 38 PetscCall(MatSetSizes(A[0],PETSC_DECIDE,PETSC_DECIDE,n,n));
38
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 38 PetscCall(MatSetFromOptions(A[0]));
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 38 PetscCall(MatGetOwnershipRange(A[0],&Istart,&Iend));
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 266 for (i=Istart;i<Iend;i++) PetscCall(MatSetValue(A[0],i,i,i+1,INSERT_VALUES));
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 38 PetscCall(MatAssemblyBegin(A[0],MAT_FINAL_ASSEMBLY));
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 38 PetscCall(MatAssemblyEnd(A[0],MAT_FINAL_ASSEMBLY));
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 38 PetscCall(MatCreate(PETSC_COMM_WORLD,&A[1]));
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 38 PetscCall(MatSetSizes(A[1],PETSC_DECIDE,PETSC_DECIDE,n,n));
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 38 PetscCall(MatSetFromOptions(A[1]));
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 266 for (i=Istart;i<Iend;i++) PetscCall(MatSetValue(A[1],i,i,-1.5,INSERT_VALUES));
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 38 PetscCall(MatAssemblyBegin(A[1],MAT_FINAL_ASSEMBLY));
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 38 PetscCall(MatAssemblyEnd(A[1],MAT_FINAL_ASSEMBLY));
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 38 PetscCall(MatCreate(PETSC_COMM_WORLD,&A[2]));
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 38 PetscCall(MatSetSizes(A[2],PETSC_DECIDE,PETSC_DECIDE,n,n));
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 38 PetscCall(MatSetFromOptions(A[2]));
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 266 for (i=Istart;i<Iend;i++) PetscCall(MatSetValue(A[2],i,i,-1.0/(i+1),INSERT_VALUES));
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 38 PetscCall(MatAssemblyBegin(A[2],MAT_FINAL_ASSEMBLY));
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 38 PetscCall(MatAssemblyEnd(A[2],MAT_FINAL_ASSEMBLY));
57
58 /*
59 Functions: f0=1.0, f1=lambda, f2=lambda^2
60 */
61
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 38 PetscCall(FNCreate(PETSC_COMM_WORLD,&f[0]));
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 38 PetscCall(FNSetType(f[0],FNRATIONAL));
63 38 coeffs[0] = 1.0;
64
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 38 PetscCall(FNRationalSetNumerator(f[0],1,coeffs));
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 38 PetscCall(FNCreate(PETSC_COMM_WORLD,&f[1]));
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 38 PetscCall(FNSetType(f[1],FNRATIONAL));
68 38 coeffs[0] = 1.0; coeffs[1] = 0.0;
69
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 38 PetscCall(FNRationalSetNumerator(f[1],2,coeffs));
70
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 38 PetscCall(FNCreate(PETSC_COMM_WORLD,&f[2]));
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 38 PetscCall(FNSetType(f[2],FNRATIONAL));
73 38 coeffs[0] = 1.0; coeffs[1] = 0.0; coeffs[2] = 0.0;
74
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 38 PetscCall(FNRationalSetNumerator(f[2],3,coeffs));
75
76 /* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
77 Create the NEP solver
78 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
79
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 38 PetscCall(NEPCreate(PETSC_COMM_WORLD,&nep));
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 38 PetscCall(PetscObjectSetName((PetscObject)nep,"nep"));
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 38 PetscCall(NEPSetSplitOperator(nep,3,A,f,SAME_NONZERO_PATTERN));
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 38 PetscCall(NEPSetTarget(nep,1.1));
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 38 PetscCall(NEPSetWhichEigenpairs(nep,NEP_TARGET_MAGNITUDE));
84
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 38 PetscCall(NEPSetFromOptions(nep));
85
86 /* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
87 Solve the eigensystem and display solution
88 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
89
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 38 PetscCall(NEPSolve(nep));
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 38 PetscCall(NEPGetConverged(nep,&nconv));
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 38 PetscCall(NEPGetIterationNumber(nep,&its));
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 38 PetscCall(PetscPrintf(PETSC_COMM_WORLD," %" PetscInt_FMT " converged eigenpairs after %" PetscInt_FMT " iterations\n",nconv,its));
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 38 if (nconv>0) {
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 38 PetscCall(MatCreateVecs(A[0],&xr,&xi));
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 38 PetscCall(NEPGetEigenpair(nep,0,&kr,&ki,xr,xi));
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 38 PetscCall(VecDestroy(&xr));
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 38 PetscCall(VecDestroy(&xi));
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 38 PetscCall(NEPGetErrorEstimate(nep,0,&errest));
99 }
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 38 PetscCall(NEPErrorView(nep,NEP_ERROR_BACKWARD,NULL));
101
102 /* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
103 Check file containing the eigenvalues
104 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
105
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 38 PetscCall(PetscOptionsGetString(NULL,NULL,"-checkfile",filename,sizeof(filename),&checkfile));
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 38 if (checkfile) {
107 #if defined(PETSC_HAVE_COMPLEX)
108 10 PetscComplex *eigs,eval;
109
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 10 PetscCall(PetscMalloc1(nconv,&eigs));
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 10 PetscCall(PetscViewerBinaryOpen(PETSC_COMM_WORLD,filename,FILE_MODE_READ,&viewer));
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 10 PetscCall(PetscViewerBinaryRead(viewer,eigs,nconv,NULL,PETSC_COMPLEX));
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 10 PetscCall(PetscViewerDestroy(&viewer));
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 50 for (i=0;i<nconv;i++) {
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 40 PetscCall(NEPGetEigenpair(nep,i,&kr,&ki,NULL,NULL));
115 #if defined(PETSC_USE_COMPLEX)
116 20 eval = kr;
117 #else
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 20 eval = PetscCMPLX(kr,ki);
119 #endif
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 40 PetscCheck(eval==eigs[i],PETSC_COMM_WORLD,PETSC_ERR_FILE_UNEXPECTED,"Eigenvalues in the file do not match");
121 }
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 10 PetscCall(PetscFree(eigs));
123 #else
124 SETERRQ(PETSC_COMM_WORLD,PETSC_ERR_SUP,"The -checkfile option requires C99 complex numbers");
125 #endif
126 }
127
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 38 PetscCall(NEPDestroy(&nep));
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 38 PetscCall(MatDestroy(&A[0]));
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 38 PetscCall(MatDestroy(&A[1]));
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 38 PetscCall(MatDestroy(&A[2]));
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 38 PetscCall(FNDestroy(&f[0]));
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 38 PetscCall(FNDestroy(&f[1]));
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 38 PetscCall(FNDestroy(&f[2]));
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 38 PetscCall(SlepcFinalize());
136 return 0;
137 }
138
139 /*TEST
140
141 test:
142 suffix: 1
143 args: -nep_type slp -nep_target -.5 -nep_error_backward ::ascii_info_detail -nep_view_values -nep_error_absolute ::ascii_matlab -nep_monitor_all -nep_converged_reason -nep_view
144 filter: grep -v "tolerance" | grep -v "problem type" | sed -e "s/[+-]0\.0*i//g" -e "s/+0i//" -e "s/[+-][0-9]\.[0-9]*e-[0-9]*i//g" -e "s/[0-9]\.[0-9]*e[+-]\([0-9]*\)/removed/g"
145 requires: double
146
147 test:
148 suffix: 2
149 args: -nep_type rii -nep_target -.5 -nep_rii_hermitian -nep_monitor -nep_view_values ::ascii_matlab
150 filter: sed -e "s/[+-][0-9]\.[0-9]*e-[0-9]*i//" -e "s/([0-9]\.[0-9]*e[+-]\([0-9]*\))/(removed)/g"
151 requires: double
152
153 test:
154 suffix: 3
155 args: -nep_type slp -nep_nev 4 -nep_view_values binary:myvalues.bin -checkfile myvalues.bin -nep_error_relative ::ascii_matlab
156 filter: sed -e "s/[0-9]\.[0-9]*e[+-]\([0-9]*\)/removed/g"
157 requires: double c99_complex
158
159 test:
160 suffix: 4
161 args: -nep_type slp -nep_nev 4 -nep_monitor draw::draw_lg -nep_monitor_all draw::draw_lg -nep_view_values draw -draw_save myeigen.ppm -draw_virtual
162 requires: x double
163
164 TEST*/
165