GCC Code Coverage Report


Directory: ./
File: src/nep/tests/test2.c
Date: 2025-10-04 04:19:13
Exec Total Coverage
Lines: 110 110 100.0%
Functions: 1 1 100.0%
Branches: 358 532 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 interface functions.\n\n";
12
13 #include <slepcnep.h>
14
15 10 int main(int argc,char **argv)
16 {
17 10 Mat A[3],B; /* problem matrices */
18 10 FN f[3],g; /* problem functions */
19 10 NEP nep; /* eigenproblem solver context */
20 10 DS ds;
21 10 RG rg;
22 10 PetscReal tol;
23 10 PetscScalar coeffs[2],target;
24 10 PetscInt n=20,i,its,nev,ncv,mpd,Istart,Iend,nterm;
25 10 PetscBool twoside;
26 10 NEPWhich which;
27 10 NEPConvergedReason reason;
28 10 NEPType type;
29 10 NEPRefine refine;
30 10 NEPRefineScheme rscheme;
31 10 NEPConv conv;
32 10 NEPStop stop;
33 10 NEPProblemType ptype;
34 10 MatStructure mstr;
35 10 PetscViewerAndFormat *vf;
36
37
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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 Nonlinear Eigenproblem, n=%" PetscInt_FMT "\n\n",n));
40
41 /*
42 Matrices
43 */
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10 PetscCall(MatCreate(PETSC_COMM_WORLD,&A[0]));
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10 PetscCall(MatSetSizes(A[0],PETSC_DECIDE,PETSC_DECIDE,n,n));
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10 PetscCall(MatSetFromOptions(A[0]));
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10 PetscCall(MatGetOwnershipRange(A[0],&Istart,&Iend));
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210 for (i=Istart;i<Iend;i++) PetscCall(MatSetValue(A[0],i,i,i+1,INSERT_VALUES));
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10 PetscCall(MatAssemblyBegin(A[0],MAT_FINAL_ASSEMBLY));
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10 PetscCall(MatAssemblyEnd(A[0],MAT_FINAL_ASSEMBLY));
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10 PetscCall(MatCreate(PETSC_COMM_WORLD,&A[1]));
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10 PetscCall(MatSetSizes(A[1],PETSC_DECIDE,PETSC_DECIDE,n,n));
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10 PetscCall(MatSetFromOptions(A[1]));
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10 PetscCall(MatGetOwnershipRange(A[1],&Istart,&Iend));
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210 for (i=Istart;i<Iend;i++) PetscCall(MatSetValue(A[1],i,i,1.0,INSERT_VALUES));
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10 PetscCall(MatAssemblyBegin(A[1],MAT_FINAL_ASSEMBLY));
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10 PetscCall(MatAssemblyEnd(A[1],MAT_FINAL_ASSEMBLY));
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10 PetscCall(MatCreate(PETSC_COMM_WORLD,&A[2]));
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10 PetscCall(MatSetSizes(A[2],PETSC_DECIDE,PETSC_DECIDE,n,n));
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10 PetscCall(MatSetFromOptions(A[2]));
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10 PetscCall(MatGetOwnershipRange(A[1],&Istart,&Iend));
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210 for (i=Istart;i<Iend;i++) PetscCall(MatSetValue(A[2],i,i,n/(PetscReal)(i+1),INSERT_VALUES));
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10 PetscCall(MatAssemblyBegin(A[2],MAT_FINAL_ASSEMBLY));
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10 PetscCall(MatAssemblyEnd(A[2],MAT_FINAL_ASSEMBLY));
67
68 /*
69 Functions: f0=-lambda, f1=1.0, f2=sqrt(lambda)
70 */
71
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10 PetscCall(FNCreate(PETSC_COMM_WORLD,&f[0]));
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10 PetscCall(FNSetType(f[0],FNRATIONAL));
73 10 coeffs[0] = -1.0; coeffs[1] = 0.0;
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10 PetscCall(FNRationalSetNumerator(f[0],2,coeffs));
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10 PetscCall(FNCreate(PETSC_COMM_WORLD,&f[1]));
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10 PetscCall(FNSetType(f[1],FNRATIONAL));
78 10 coeffs[0] = 1.0;
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10 PetscCall(FNRationalSetNumerator(f[1],1,coeffs));
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10 PetscCall(FNCreate(PETSC_COMM_WORLD,&f[2]));
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10 PetscCall(FNSetType(f[2],FNSQRT));
83
84 /* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
85 Create eigensolver and test interface functions
86 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
87
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10 PetscCall(NEPCreate(PETSC_COMM_WORLD,&nep));
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10 PetscCall(NEPSetSplitOperator(nep,3,A,f,SAME_NONZERO_PATTERN));
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10 PetscCall(NEPGetSplitOperatorInfo(nep,&nterm,&mstr));
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10 PetscCall(PetscPrintf(PETSC_COMM_WORLD," Nonlinear function with %" PetscInt_FMT " terms, with %s nonzero pattern\n",nterm,MatStructures[mstr]));
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10 PetscCall(NEPGetSplitOperatorTerm(nep,0,&B,&g));
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10 PetscCall(MatView(B,NULL));
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10 PetscCall(FNView(g,NULL));
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10 PetscCall(NEPSetType(nep,NEPRII));
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10 PetscCall(NEPGetType(nep,&type));
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10 PetscCall(PetscPrintf(PETSC_COMM_WORLD," Type set to %s\n",type));
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10 PetscCall(NEPGetTwoSided(nep,&twoside));
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20 PetscCall(PetscPrintf(PETSC_COMM_WORLD," Two-sided flag = %s\n",twoside?"true":"false"));
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10 PetscCall(NEPGetProblemType(nep,&ptype));
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10 PetscCall(PetscPrintf(PETSC_COMM_WORLD," Problem type before changing = %d",(int)ptype));
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10 PetscCall(NEPSetProblemType(nep,NEP_RATIONAL));
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10 PetscCall(NEPGetProblemType(nep,&ptype));
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10 PetscCall(PetscPrintf(PETSC_COMM_WORLD," ... changed to %d.\n",(int)ptype));
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10 PetscCall(NEPSetRefine(nep,NEP_REFINE_SIMPLE,1,1e-9,2,NEP_REFINE_SCHEME_EXPLICIT));
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10 PetscCall(NEPGetRefine(nep,&refine,NULL,&tol,&its,&rscheme));
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10 PetscCall(PetscPrintf(PETSC_COMM_WORLD," Refinement: %s, tol=%g, its=%" PetscInt_FMT ", scheme=%s\n",NEPRefineTypes[refine],(double)tol,its,NEPRefineSchemes[rscheme]));
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10 PetscCall(NEPSetTarget(nep,1.1));
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10 PetscCall(NEPGetTarget(nep,&target));
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10 PetscCall(NEPSetWhichEigenpairs(nep,NEP_TARGET_MAGNITUDE));
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10 PetscCall(NEPGetWhichEigenpairs(nep,&which));
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10 PetscCall(PetscPrintf(PETSC_COMM_WORLD," Which = %d, target = %g\n",(int)which,(double)PetscRealPart(target)));
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10 PetscCall(NEPSetDimensions(nep,1,12,PETSC_CURRENT));
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10 PetscCall(NEPGetDimensions(nep,&nev,&ncv,&mpd));
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10 PetscCall(PetscPrintf(PETSC_COMM_WORLD," Dimensions: nev=%" PetscInt_FMT ", ncv=%" PetscInt_FMT ", mpd=%" PetscInt_FMT "\n",nev,ncv,mpd));
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10 PetscCall(NEPSetTolerances(nep,1.0e-6,200));
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10 PetscCall(NEPGetTolerances(nep,&tol,&its));
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10 PetscCall(PetscPrintf(PETSC_COMM_WORLD," Tolerance = %.6f, max_its = %" PetscInt_FMT "\n",(double)tol,its));
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10 PetscCall(NEPSetConvergenceTest(nep,NEP_CONV_ABS));
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10 PetscCall(NEPGetConvergenceTest(nep,&conv));
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10 PetscCall(NEPSetStoppingTest(nep,NEP_STOP_BASIC));
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10 PetscCall(NEPGetStoppingTest(nep,&stop));
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10 PetscCall(PetscPrintf(PETSC_COMM_WORLD," Convergence test = %d, stopping test = %d\n",(int)conv,(int)stop));
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10 PetscCall(PetscViewerAndFormatCreate(PETSC_VIEWER_STDOUT_WORLD,PETSC_VIEWER_DEFAULT,&vf));
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10 PetscCall(NEPMonitorSet(nep,(PetscErrorCode (*)(NEP,PetscInt,PetscInt,PetscScalar*,PetscScalar*,PetscReal*,PetscInt,void*))NEPMonitorFirst,vf,(PetscCtxDestroyFn*)PetscViewerAndFormatDestroy));
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10 PetscCall(NEPMonitorCancel(nep));
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10 PetscCall(NEPGetDS(nep,&ds));
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10 PetscCall(DSView(ds,NULL));
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10 PetscCall(NEPSetFromOptions(nep));
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10 PetscCall(NEPGetRG(nep,&rg));
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10 PetscCall(RGView(rg,NULL));
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10 PetscCall(NEPSolve(nep));
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10 PetscCall(NEPGetConvergedReason(nep,&reason));
144
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10 PetscCall(PetscPrintf(PETSC_COMM_WORLD," Finished - converged reason = %d\n",(int)reason));
145
146 /* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
147 Display solution and clean up
148 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
149
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10 PetscCall(NEPErrorView(nep,NEP_ERROR_RELATIVE,NULL));
150
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10 PetscCall(NEPDestroy(&nep));
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10 PetscCall(MatDestroy(&A[0]));
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10 PetscCall(MatDestroy(&A[1]));
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10 PetscCall(MatDestroy(&A[2]));
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10 PetscCall(FNDestroy(&f[0]));
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10 PetscCall(FNDestroy(&f[1]));
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10 PetscCall(FNDestroy(&f[2]));
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10 PetscCall(SlepcFinalize());
158 return 0;
159 }
160
161 /*TEST
162
163 test:
164 suffix: 1
165 args: -nep_view
166 filter: grep -v tolerance
167
168 TEST*/
169