GCC Code Coverage Report

Directory:	./
File:	src/nep/tests/test15.c
Date:	2025-11-19 04:19:03

	Exec	Total	Coverage
Lines:	100	100	100.0%
Functions:	2	2	100.0%
Branches:	274	420	65.2%

  
      Line
      Branch
      Exec
      Source
    
      /*
    
         - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
    
         SLEPc - Scalable Library for Eigenvalue Problem Computations
    
         Copyright (c) 2002-, Universitat Politecnica de Valencia, Spain
    
         This file is part of SLEPc.
    
         SLEPc is distributed under a 2-clause BSD license (see LICENSE).
    
         - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
    
      */
    
      static char help[] = "Illustrates the use of a user-defined stopping test.\n\n"
    
        "This is based on ex22.\n"
    
        "The command line options are:\n"
    
        "  -n <n>, where <n> = number of grid subdivisions.\n"
    
        "  -tau <tau>, where <tau> is the delay parameter.\n\n";
    
      /*
    
         Solve parabolic partial differential equation with time delay tau
    
                  u_t = u_xx + a*u(t) + b*u(t-tau)
    
                  u(0,t) = u(pi,t) = 0
    
         with a = 20 and b(x) = -4.1+x*(1-exp(x-pi)).
    
         Discretization leads to a DDE of dimension n
    
                  -u' = A*u(t) + B*u(t-tau)
    
         which results in the nonlinear eigenproblem
    
                  (-lambda*I + A + exp(-tau*lambda)*B)*u = 0
    
      */
    
      #include <slepcnep.h>
    
      /*
    
         User-defined routines
    
      */
    
      PetscErrorCode MyStoppingTest(NEP,PetscInt,PetscInt,PetscInt,PetscInt,NEPConvergedReason*,void*);
    
      typedef struct {
    
        PetscInt    lastnconv;      /* last value of nconv; used in stopping test */
    
        PetscInt    nreps;          /* number of repetitions of nconv; used in stopping test */
    
      } CTX_DELAY;
    
      10
      int main(int argc,char **argv)
    
      {
    
      10
        NEP            nep;
    
      10
        Mat            Id,A,B;
    
      10
        FN             f1,f2,f3;
    
      10
        RG             rg;
    
      10
        CTX_DELAY      *ctx;
    
      10
        Mat            mats[3];
    
      10
        FN             funs[3];
    
      10
        PetscScalar    coeffs[2],b;
    
      10
        PetscInt       n=128,Istart,Iend,i,mpd;
    
      10
        PetscReal      tau=0.001,h,a=20,xi;
    
      10
        PetscBool      terse;
    
      10
        PetscViewer    viewer;
    
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      10
        PetscFunctionBeginUser;
    
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      10
        PetscCall(SlepcInitialize(&argc,&argv,NULL,help));
    
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      10
        PetscCall(PetscOptionsGetInt(NULL,NULL,"-n",&n,NULL));
    
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      10
        PetscCall(PetscOptionsGetReal(NULL,NULL,"-tau",&tau,NULL));
    
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      10
        PetscCall(PetscPrintf(PETSC_COMM_WORLD,"\n1-D Delay Eigenproblem, n=%" PetscInt_FMT ", tau=%g\n\n",n,(double)tau));
    
      10
        h = PETSC_PI/(PetscReal)(n+1);
    
        /* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
    
           Create nonlinear eigensolver context
    
           - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
    
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      10
        PetscCall(NEPCreate(PETSC_COMM_WORLD,&nep));
    
        /* Identity matrix */
    
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      10
        PetscCall(MatCreateConstantDiagonal(PETSC_COMM_WORLD,PETSC_DECIDE,PETSC_DECIDE,n,n,1.0,&Id));
    
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      10
        PetscCall(MatSetOption(Id,MAT_HERMITIAN,PETSC_TRUE));
    
        /* A = 1/h^2*tridiag(1,-2,1) + a*I */
    
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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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      1290
        for (i=Istart;i<Iend;i++) {
    
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      1280
          if (i>0) PetscCall(MatSetValue(A,i,i-1,1.0/(h*h),INSERT_VALUES));
    
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      1280
          if (i<n-1) PetscCall(MatSetValue(A,i,i+1,1.0/(h*h),INSERT_VALUES));
    
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      1280
          PetscCall(MatSetValue(A,i,i,-2.0/(h*h)+a,INSERT_VALUES));
    
        }
    
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      10
        PetscCall(MatAssemblyBegin(A,MAT_FINAL_ASSEMBLY));
    
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      10
        PetscCall(MatAssemblyEnd(A,MAT_FINAL_ASSEMBLY));
    
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      10
        PetscCall(MatSetOption(A,MAT_HERMITIAN,PETSC_TRUE));
    
        /* B = diag(b(xi)) */
    
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      10
        PetscCall(MatCreate(PETSC_COMM_WORLD,&B));
    
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      10
        PetscCall(MatSetSizes(B,PETSC_DECIDE,PETSC_DECIDE,n,n));
    
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      10
        PetscCall(MatSetFromOptions(B));
    
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      10
        PetscCall(MatGetOwnershipRange(B,&Istart,&Iend));
    
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      1290
        for (i=Istart;i<Iend;i++) {
    
      1280
          xi = (i+1)*h;
    
      1280
          b = -4.1+xi*(1.0-PetscExpReal(xi-PETSC_PI));
    
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      1280
          PetscCall(MatSetValues(B,1,&i,1,&i,&b,INSERT_VALUES));
    
        }
    
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      10
        PetscCall(MatAssemblyBegin(B,MAT_FINAL_ASSEMBLY));
    
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      10
        PetscCall(MatAssemblyEnd(B,MAT_FINAL_ASSEMBLY));
    
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      10
        PetscCall(MatSetOption(B,MAT_HERMITIAN,PETSC_TRUE));
    
        /* Functions: f1=-lambda, f2=1.0, f3=exp(-tau*lambda) */
    
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      10
        PetscCall(FNCreate(PETSC_COMM_WORLD,&f1));
    
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      10
        PetscCall(FNSetType(f1,FNRATIONAL));
    
      10
        coeffs[0] = -1.0; coeffs[1] = 0.0;
    
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      10
        PetscCall(FNRationalSetNumerator(f1,2,coeffs));
    
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      10
        PetscCall(FNCreate(PETSC_COMM_WORLD,&f2));
    
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      10
        PetscCall(FNSetType(f2,FNRATIONAL));
    
      10
        coeffs[0] = 1.0;
    
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      10
        PetscCall(FNRationalSetNumerator(f2,1,coeffs));
    
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      10
        PetscCall(FNCreate(PETSC_COMM_WORLD,&f3));
    
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      10
        PetscCall(FNSetType(f3,FNEXP));
    
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      10
        PetscCall(FNSetScale(f3,-tau,1.0));
    
        /* Set the split operator */
    
      10
        mats[0] = A;  funs[0] = f2;
    
      10
        mats[1] = Id; funs[1] = f1;
    
      10
        mats[2] = B;  funs[2] = f3;
    
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      10
        PetscCall(NEPSetSplitOperator(nep,3,mats,funs,SUBSET_NONZERO_PATTERN));
    
        /* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
    
                      Customize nonlinear solver; set runtime options
    
           - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
    
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      10
        PetscCall(NEPSetType(nep,NEPNLEIGS));
    
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      10
        PetscCall(NEPGetRG(nep,&rg));
    
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      10
        PetscCall(RGSetType(rg,RGINTERVAL));
    
      #if defined(PETSC_USE_COMPLEX)
    
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      5
        PetscCall(RGIntervalSetEndpoints(rg,5,20,-0.001,0.001));
    
      #else
    
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      5
        PetscCall(RGIntervalSetEndpoints(rg,5,20,-0.0,0.0));
    
      #endif
    
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      10
        PetscCall(NEPSetTarget(nep,15.0));
    
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      10
        PetscCall(NEPSetWhichEigenpairs(nep,NEP_TARGET_MAGNITUDE));
    
        /*
    
           Set solver options. In particular, we must allocate sufficient
    
           storage for all eigenpairs that may converge (ncv). This is
    
           application-dependent.
    
        */
    
      10
        mpd = 40;
    
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      10
        PetscCall(NEPSetDimensions(nep,2*mpd,3*mpd,mpd));
    
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      10
        PetscCall(NEPSetTolerances(nep,PETSC_CURRENT,2000));
    
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      10
        PetscCall(PetscNew(&ctx));
    
      10
        ctx->lastnconv = 0;
    
      10
        ctx->nreps     = 0;
    
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      10
        PetscCall(NEPSetStoppingTestFunction(nep,MyStoppingTest,(void*)ctx,NULL));
    
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      10
        PetscCall(NEPSetFromOptions(nep));
    
        /* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
    
                            Solve the eigensystem
    
           - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
    
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      10
        PetscCall(NEPSolve(nep));
    
        /* show detailed info unless -terse option is given by user */
    
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      10
        PetscCall(PetscViewerASCIIGetStdout(PETSC_COMM_WORLD,&viewer));
    
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      10
        PetscCall(PetscViewerPushFormat(viewer,PETSC_VIEWER_ASCII_INFO_DETAIL));
    
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      10
        PetscCall(NEPConvergedReasonView(nep,viewer));
    
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      10
        PetscCall(PetscOptionsHasName(NULL,NULL,"-terse",&terse));
    
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      10
        if (!terse) PetscCall(NEPErrorView(nep,NEP_ERROR_BACKWARD,viewer));
    
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      10
        PetscCall(PetscViewerPopFormat(viewer));
    
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      10
        PetscCall(NEPDestroy(&nep));
    
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      10
        PetscCall(MatDestroy(&Id));
    
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      10
        PetscCall(MatDestroy(&A));
    
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      10
        PetscCall(MatDestroy(&B));
    
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      10
        PetscCall(FNDestroy(&f1));
    
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      10
        PetscCall(FNDestroy(&f2));
    
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      10
        PetscCall(FNDestroy(&f3));
    
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      10
        PetscCall(PetscFree(ctx));
    
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      10
        PetscCall(SlepcFinalize());
    
        return 0;
    
      }
    
      /*
    
          Function for user-defined stopping test.
    
          Ignores the value of nev. It only takes into account the number of
    
          eigenpairs that have converged in recent outer iterations (restarts);
    
          if no new eigenvalues have converged in the last few restarts,
    
          we stop the iteration, assuming that no more eigenvalues are present
    
          inside the region.
    
      */
    
      120
      PetscErrorCode MyStoppingTest(NEP nep,PetscInt its,PetscInt max_it,PetscInt nconv,PetscInt nev,NEPConvergedReason *reason,void *ptr)
    
      {
    
      120
        CTX_DELAY      *ctx = (CTX_DELAY*)ptr;
    
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      120
        PetscFunctionBeginUser;
    
        /* check usual termination conditions, but ignoring the case nconv>=nev */
    
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      120
        PetscCall(NEPStoppingBasic(nep,its,max_it,nconv,PETSC_INT_MAX,reason,NULL));
    
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      120
        if (*reason==NEP_CONVERGED_ITERATING) {
    
          /* check if nconv is the same as before */
    
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      120
          if (nconv==ctx->lastnconv) ctx->nreps++;
    
          else {
    
      10
            ctx->lastnconv = nconv;
    
      10
            ctx->nreps     = 0;
    
          }
    
          /* check if no eigenvalues converged in last 10 restarts */
    
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      120
          if (nconv && ctx->nreps>10) *reason = NEP_CONVERGED_USER;
    
        }
    
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      24
        PetscFunctionReturn(PETSC_SUCCESS);
    
      }
    
      /*TEST
    
         test:
    
            suffix: 1
    
            args: -terse
    
      TEST*/

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[] = "Illustrates the use of a user-defined stopping test.\n\n"
12			"This is based on ex22.\n"
13			"The command line options are:\n"
14			" -n <n>, where <n> = number of grid subdivisions.\n"
15			" -tau <tau>, where <tau> is the delay parameter.\n\n";
16
17			/*
18			Solve parabolic partial differential equation with time delay tau
19
20			u_t = u_xx + au(t) + bu(t-tau)
21			u(0,t) = u(pi,t) = 0
22
23			with a = 20 and b(x) = -4.1+x*(1-exp(x-pi)).
24
25			Discretization leads to a DDE of dimension n
26
27			-u' = Au(t) + Bu(t-tau)
28
29			which results in the nonlinear eigenproblem
30
31			(-lambdaI + A + exp(-taulambda)B)u = 0
32			*/
33
34			#include <slepcnep.h>
35
36			/*
37			User-defined routines
38			*/
39			PetscErrorCode MyStoppingTest(NEP,PetscInt,PetscInt,PetscInt,PetscInt,NEPConvergedReason,void);
40
41			typedef struct {
42			PetscInt lastnconv; /* last value of nconv; used in stopping test */
43			PetscInt nreps; /* number of repetitions of nconv; used in stopping test */
44			} CTX_DELAY;
45
46		10	int main(int argc,char **argv)
47			{
48		10	NEP nep;
49		10	Mat Id,A,B;
50		10	FN f1,f2,f3;
51		10	RG rg;
52		10	CTX_DELAY *ctx;
53		10	Mat mats[3];
54		10	FN funs[3];
55		10	PetscScalar coeffs[2],b;
56		10	PetscInt n=128,Istart,Iend,i,mpd;
57		10	PetscReal tau=0.001,h,a=20,xi;
58		10	PetscBool terse;
59		10	PetscViewer viewer;
60
61	1/2 ✓ Branch 0 taken 2 times. ✗ Branch 1 not taken.	10	PetscFunctionBeginUser;
62	4/6 ✓ Branch 0 taken 2 times. ✓ Branch 1 taken 8 times. ✓ Branch 2 taken 2 times. ✗ Branch 3 not taken. ✗ Branch 4 not taken. ✓ Branch 5 taken 2 times.	10	PetscCall(SlepcInitialize(&argc,&argv,NULL,help));
63	4/6 ✓ Branch 0 taken 2 times. ✓ Branch 1 taken 8 times. ✓ Branch 2 taken 2 times. ✗ Branch 3 not taken. ✗ Branch 4 not taken. ✓ Branch 5 taken 2 times.	10	PetscCall(PetscOptionsGetInt(NULL,NULL,"-n",&n,NULL));
64	4/6 ✓ Branch 0 taken 2 times. ✓ Branch 1 taken 8 times. ✓ Branch 2 taken 2 times. ✗ Branch 3 not taken. ✗ Branch 4 not taken. ✓ Branch 5 taken 2 times.	10	PetscCall(PetscOptionsGetReal(NULL,NULL,"-tau",&tau,NULL));
65	4/6 ✓ Branch 0 taken 2 times. ✓ Branch 1 taken 8 times. ✓ Branch 2 taken 2 times. ✗ Branch 3 not taken. ✗ Branch 4 not taken. ✓ Branch 5 taken 2 times.	10	PetscCall(PetscPrintf(PETSC_COMM_WORLD,"\n1-D Delay Eigenproblem, n=%" PetscInt_FMT ", tau=%g\n\n",n,(double)tau));
66		10	h = PETSC_PI/(PetscReal)(n+1);
67
68			/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
69			Create nonlinear eigensolver context
70			- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
71
72	4/6 ✓ Branch 0 taken 2 times. ✓ Branch 1 taken 8 times. ✓ Branch 2 taken 2 times. ✗ Branch 3 not taken. ✗ Branch 4 not taken. ✓ Branch 5 taken 2 times.	10	PetscCall(NEPCreate(PETSC_COMM_WORLD,&nep));
73
74			/* Identity matrix */
75	4/6 ✓ Branch 0 taken 2 times. ✓ Branch 1 taken 8 times. ✓ Branch 2 taken 2 times. ✗ Branch 3 not taken. ✗ Branch 4 not taken. ✓ Branch 5 taken 2 times.	10	PetscCall(MatCreateConstantDiagonal(PETSC_COMM_WORLD,PETSC_DECIDE,PETSC_DECIDE,n,n,1.0,&Id));
76	4/6 ✓ Branch 0 taken 2 times. ✓ Branch 1 taken 8 times. ✓ Branch 2 taken 2 times. ✗ Branch 3 not taken. ✗ Branch 4 not taken. ✓ Branch 5 taken 2 times.	10	PetscCall(MatSetOption(Id,MAT_HERMITIAN,PETSC_TRUE));
77
78			/* A = 1/h^2tridiag(1,-2,1) + aI */
79	4/6 ✓ Branch 0 taken 2 times. ✓ Branch 1 taken 8 times. ✓ Branch 2 taken 2 times. ✗ Branch 3 not taken. ✗ Branch 4 not taken. ✓ Branch 5 taken 2 times.	10	PetscCall(MatCreate(PETSC_COMM_WORLD,&A));
80	4/6 ✓ Branch 0 taken 2 times. ✓ Branch 1 taken 8 times. ✓ Branch 2 taken 2 times. ✗ Branch 3 not taken. ✗ Branch 4 not taken. ✓ Branch 5 taken 2 times.	10	PetscCall(MatSetSizes(A,PETSC_DECIDE,PETSC_DECIDE,n,n));
81	4/6 ✓ Branch 0 taken 2 times. ✓ Branch 1 taken 8 times. ✓ Branch 2 taken 2 times. ✗ Branch 3 not taken. ✗ Branch 4 not taken. ✓ Branch 5 taken 2 times.	10	PetscCall(MatSetFromOptions(A));
82	4/6 ✓ Branch 0 taken 2 times. ✓ Branch 1 taken 8 times. ✓ Branch 2 taken 2 times. ✗ Branch 3 not taken. ✗ Branch 4 not taken. ✓ Branch 5 taken 2 times.	10	PetscCall(MatGetOwnershipRange(A,&Istart,&Iend));
83	2/2 ✓ Branch 0 taken 10 times. ✓ Branch 1 taken 10 times.	1290	for (i=Istart;i<Iend;i++) {
84	6/8 ✓ Branch 0 taken 10 times. ✓ Branch 1 taken 10 times. ✓ Branch 2 taken 2 times. ✓ Branch 3 taken 8 times. ✓ Branch 4 taken 2 times. ✗ Branch 5 not taken. ✗ Branch 6 not taken. ✓ Branch 7 taken 2 times.	1280	if (i>0) PetscCall(MatSetValue(A,i,i-1,1.0/(h*h),INSERT_VALUES));
85	6/8 ✓ Branch 0 taken 10 times. ✓ Branch 1 taken 10 times. ✓ Branch 2 taken 2 times. ✓ Branch 3 taken 8 times. ✓ Branch 4 taken 2 times. ✗ Branch 5 not taken. ✗ Branch 6 not taken. ✓ Branch 7 taken 2 times.	1280	if (i<n-1) PetscCall(MatSetValue(A,i,i+1,1.0/(h*h),INSERT_VALUES));
86	4/6 ✓ Branch 0 taken 2 times. ✓ Branch 1 taken 8 times. ✓ Branch 2 taken 2 times. ✗ Branch 3 not taken. ✗ Branch 4 not taken. ✓ Branch 5 taken 2 times.	1280	PetscCall(MatSetValue(A,i,i,-2.0/(h*h)+a,INSERT_VALUES));
87			}
88	4/6 ✓ Branch 0 taken 2 times. ✓ Branch 1 taken 8 times. ✓ Branch 2 taken 2 times. ✗ Branch 3 not taken. ✗ Branch 4 not taken. ✓ Branch 5 taken 2 times.	10	PetscCall(MatAssemblyBegin(A,MAT_FINAL_ASSEMBLY));
89	4/6 ✓ Branch 0 taken 2 times. ✓ Branch 1 taken 8 times. ✓ Branch 2 taken 2 times. ✗ Branch 3 not taken. ✗ Branch 4 not taken. ✓ Branch 5 taken 2 times.	10	PetscCall(MatAssemblyEnd(A,MAT_FINAL_ASSEMBLY));
90	4/6 ✓ Branch 0 taken 2 times. ✓ Branch 1 taken 8 times. ✓ Branch 2 taken 2 times. ✗ Branch 3 not taken. ✗ Branch 4 not taken. ✓ Branch 5 taken 2 times.	10	PetscCall(MatSetOption(A,MAT_HERMITIAN,PETSC_TRUE));
91
92			/* B = diag(b(xi)) */
93	4/6 ✓ Branch 0 taken 2 times. ✓ Branch 1 taken 8 times. ✓ Branch 2 taken 2 times. ✗ Branch 3 not taken. ✗ Branch 4 not taken. ✓ Branch 5 taken 2 times.	10	PetscCall(MatCreate(PETSC_COMM_WORLD,&B));
94	4/6 ✓ Branch 0 taken 2 times. ✓ Branch 1 taken 8 times. ✓ Branch 2 taken 2 times. ✗ Branch 3 not taken. ✗ Branch 4 not taken. ✓ Branch 5 taken 2 times.	10	PetscCall(MatSetSizes(B,PETSC_DECIDE,PETSC_DECIDE,n,n));
95	4/6 ✓ Branch 0 taken 2 times. ✓ Branch 1 taken 8 times. ✓ Branch 2 taken 2 times. ✗ Branch 3 not taken. ✗ Branch 4 not taken. ✓ Branch 5 taken 2 times.	10	PetscCall(MatSetFromOptions(B));
96	4/6 ✓ Branch 0 taken 2 times. ✓ Branch 1 taken 8 times. ✓ Branch 2 taken 2 times. ✗ Branch 3 not taken. ✗ Branch 4 not taken. ✓ Branch 5 taken 2 times.	10	PetscCall(MatGetOwnershipRange(B,&Istart,&Iend));
97	2/2 ✓ Branch 0 taken 10 times. ✓ Branch 1 taken 10 times.	1290	for (i=Istart;i<Iend;i++) {
98		1280	xi = (i+1)*h;
99		1280	b = -4.1+xi*(1.0-PetscExpReal(xi-PETSC_PI));
100	4/6 ✓ Branch 0 taken 2 times. ✓ Branch 1 taken 8 times. ✓ Branch 2 taken 2 times. ✗ Branch 3 not taken. ✗ Branch 4 not taken. ✓ Branch 5 taken 2 times.	1280	PetscCall(MatSetValues(B,1,&i,1,&i,&b,INSERT_VALUES));
101			}
102	4/6 ✓ Branch 0 taken 2 times. ✓ Branch 1 taken 8 times. ✓ Branch 2 taken 2 times. ✗ Branch 3 not taken. ✗ Branch 4 not taken. ✓ Branch 5 taken 2 times.	10	PetscCall(MatAssemblyBegin(B,MAT_FINAL_ASSEMBLY));
103	4/6 ✓ Branch 0 taken 2 times. ✓ Branch 1 taken 8 times. ✓ Branch 2 taken 2 times. ✗ Branch 3 not taken. ✗ Branch 4 not taken. ✓ Branch 5 taken 2 times.	10	PetscCall(MatAssemblyEnd(B,MAT_FINAL_ASSEMBLY));
104	4/6 ✓ Branch 0 taken 2 times. ✓ Branch 1 taken 8 times. ✓ Branch 2 taken 2 times. ✗ Branch 3 not taken. ✗ Branch 4 not taken. ✓ Branch 5 taken 2 times.	10	PetscCall(MatSetOption(B,MAT_HERMITIAN,PETSC_TRUE));
105
106			/* Functions: f1=-lambda, f2=1.0, f3=exp(-taulambda) /
107	4/6 ✓ Branch 0 taken 2 times. ✓ Branch 1 taken 8 times. ✓ Branch 2 taken 2 times. ✗ Branch 3 not taken. ✗ Branch 4 not taken. ✓ Branch 5 taken 2 times.	10	PetscCall(FNCreate(PETSC_COMM_WORLD,&f1));
108	4/6 ✓ Branch 0 taken 2 times. ✓ Branch 1 taken 8 times. ✓ Branch 2 taken 2 times. ✗ Branch 3 not taken. ✗ Branch 4 not taken. ✓ Branch 5 taken 2 times.	10	PetscCall(FNSetType(f1,FNRATIONAL));
109		10	coeffs[0] = -1.0; coeffs[1] = 0.0;
110	4/6 ✓ Branch 0 taken 2 times. ✓ Branch 1 taken 8 times. ✓ Branch 2 taken 2 times. ✗ Branch 3 not taken. ✗ Branch 4 not taken. ✓ Branch 5 taken 2 times.	10	PetscCall(FNRationalSetNumerator(f1,2,coeffs));
111
112	4/6 ✓ Branch 0 taken 2 times. ✓ Branch 1 taken 8 times. ✓ Branch 2 taken 2 times. ✗ Branch 3 not taken. ✗ Branch 4 not taken. ✓ Branch 5 taken 2 times.	10	PetscCall(FNCreate(PETSC_COMM_WORLD,&f2));
113	4/6 ✓ Branch 0 taken 2 times. ✓ Branch 1 taken 8 times. ✓ Branch 2 taken 2 times. ✗ Branch 3 not taken. ✗ Branch 4 not taken. ✓ Branch 5 taken 2 times.	10	PetscCall(FNSetType(f2,FNRATIONAL));
114		10	coeffs[0] = 1.0;
115	4/6 ✓ Branch 0 taken 2 times. ✓ Branch 1 taken 8 times. ✓ Branch 2 taken 2 times. ✗ Branch 3 not taken. ✗ Branch 4 not taken. ✓ Branch 5 taken 2 times.	10	PetscCall(FNRationalSetNumerator(f2,1,coeffs));
116
117	4/6 ✓ Branch 0 taken 2 times. ✓ Branch 1 taken 8 times. ✓ Branch 2 taken 2 times. ✗ Branch 3 not taken. ✗ Branch 4 not taken. ✓ Branch 5 taken 2 times.	10	PetscCall(FNCreate(PETSC_COMM_WORLD,&f3));
118	4/6 ✓ Branch 0 taken 2 times. ✓ Branch 1 taken 8 times. ✓ Branch 2 taken 2 times. ✗ Branch 3 not taken. ✗ Branch 4 not taken. ✓ Branch 5 taken 2 times.	10	PetscCall(FNSetType(f3,FNEXP));
119	4/6 ✓ Branch 0 taken 2 times. ✓ Branch 1 taken 8 times. ✓ Branch 2 taken 2 times. ✗ Branch 3 not taken. ✗ Branch 4 not taken. ✓ Branch 5 taken 2 times.	10	PetscCall(FNSetScale(f3,-tau,1.0));
120
121			/* Set the split operator */
122		10	mats[0] = A; funs[0] = f2;
123		10	mats[1] = Id; funs[1] = f1;
124		10	mats[2] = B; funs[2] = f3;
125	4/6 ✓ Branch 0 taken 2 times. ✓ Branch 1 taken 8 times. ✓ Branch 2 taken 2 times. ✗ Branch 3 not taken. ✗ Branch 4 not taken. ✓ Branch 5 taken 2 times.	10	PetscCall(NEPSetSplitOperator(nep,3,mats,funs,SUBSET_NONZERO_PATTERN));
126
127			/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
128			Customize nonlinear solver; set runtime options
129			- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
130
131	4/6 ✓ Branch 0 taken 2 times. ✓ Branch 1 taken 8 times. ✓ Branch 2 taken 2 times. ✗ Branch 3 not taken. ✗ Branch 4 not taken. ✓ Branch 5 taken 2 times.	10	PetscCall(NEPSetType(nep,NEPNLEIGS));
132	4/6 ✓ Branch 0 taken 2 times. ✓ Branch 1 taken 8 times. ✓ Branch 2 taken 2 times. ✗ Branch 3 not taken. ✗ Branch 4 not taken. ✓ Branch 5 taken 2 times.	10	PetscCall(NEPGetRG(nep,&rg));
133	4/6 ✓ Branch 0 taken 2 times. ✓ Branch 1 taken 8 times. ✓ Branch 2 taken 2 times. ✗ Branch 3 not taken. ✗ Branch 4 not taken. ✓ Branch 5 taken 2 times.	10	PetscCall(RGSetType(rg,RGINTERVAL));
134			#if defined(PETSC_USE_COMPLEX)
135	4/6 ✓ Branch 0 taken 1 times. ✓ Branch 1 taken 4 times. ✓ Branch 2 taken 1 times. ✗ Branch 3 not taken. ✗ Branch 4 not taken. ✓ Branch 5 taken 1 times.	5	PetscCall(RGIntervalSetEndpoints(rg,5,20,-0.001,0.001));
136			#else
137	4/6 ✓ Branch 0 taken 1 times. ✓ Branch 1 taken 4 times. ✓ Branch 2 taken 1 times. ✗ Branch 3 not taken. ✗ Branch 4 not taken. ✓ Branch 5 taken 1 times.	5	PetscCall(RGIntervalSetEndpoints(rg,5,20,-0.0,0.0));
138			#endif
139	4/6 ✓ Branch 0 taken 2 times. ✓ Branch 1 taken 8 times. ✓ Branch 2 taken 2 times. ✗ Branch 3 not taken. ✗ Branch 4 not taken. ✓ Branch 5 taken 2 times.	10	PetscCall(NEPSetTarget(nep,15.0));
140	4/6 ✓ Branch 0 taken 2 times. ✓ Branch 1 taken 8 times. ✓ Branch 2 taken 2 times. ✗ Branch 3 not taken. ✗ Branch 4 not taken. ✓ Branch 5 taken 2 times.	10	PetscCall(NEPSetWhichEigenpairs(nep,NEP_TARGET_MAGNITUDE));
141
142			/*
143			Set solver options. In particular, we must allocate sufficient
144			storage for all eigenpairs that may converge (ncv). This is
145			application-dependent.
146			*/
147		10	mpd = 40;
148	4/6 ✓ Branch 0 taken 2 times. ✓ Branch 1 taken 8 times. ✓ Branch 2 taken 2 times. ✗ Branch 3 not taken. ✗ Branch 4 not taken. ✓ Branch 5 taken 2 times.	10	PetscCall(NEPSetDimensions(nep,2mpd,3mpd,mpd));
149	4/6 ✓ Branch 0 taken 2 times. ✓ Branch 1 taken 8 times. ✓ Branch 2 taken 2 times. ✗ Branch 3 not taken. ✗ Branch 4 not taken. ✓ Branch 5 taken 2 times.	10	PetscCall(NEPSetTolerances(nep,PETSC_CURRENT,2000));
150	4/6 ✓ Branch 0 taken 2 times. ✓ Branch 1 taken 8 times. ✓ Branch 2 taken 2 times. ✗ Branch 3 not taken. ✗ Branch 4 not taken. ✓ Branch 5 taken 2 times.	10	PetscCall(PetscNew(&ctx));
151		10	ctx->lastnconv = 0;
152		10	ctx->nreps = 0;
153	4/6 ✓ Branch 0 taken 2 times. ✓ Branch 1 taken 8 times. ✓ Branch 2 taken 2 times. ✗ Branch 3 not taken. ✗ Branch 4 not taken. ✓ Branch 5 taken 2 times.	10	PetscCall(NEPSetStoppingTestFunction(nep,MyStoppingTest,(void*)ctx,NULL));
154
155	4/6 ✓ Branch 0 taken 2 times. ✓ Branch 1 taken 8 times. ✓ Branch 2 taken 2 times. ✗ Branch 3 not taken. ✗ Branch 4 not taken. ✓ Branch 5 taken 2 times.	10	PetscCall(NEPSetFromOptions(nep));
156
157			/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
158			Solve the eigensystem
159			- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
160
161	4/6 ✓ Branch 0 taken 2 times. ✓ Branch 1 taken 8 times. ✓ Branch 2 taken 2 times. ✗ Branch 3 not taken. ✗ Branch 4 not taken. ✓ Branch 5 taken 2 times.	10	PetscCall(NEPSolve(nep));
162
163			/* show detailed info unless -terse option is given by user */
164	4/6 ✓ Branch 0 taken 2 times. ✓ Branch 1 taken 8 times. ✓ Branch 2 taken 2 times. ✗ Branch 3 not taken. ✗ Branch 4 not taken. ✓ Branch 5 taken 2 times.	10	PetscCall(PetscViewerASCIIGetStdout(PETSC_COMM_WORLD,&viewer));
165	4/6 ✓ Branch 0 taken 2 times. ✓ Branch 1 taken 8 times. ✓ Branch 2 taken 2 times. ✗ Branch 3 not taken. ✗ Branch 4 not taken. ✓ Branch 5 taken 2 times.	10	PetscCall(PetscViewerPushFormat(viewer,PETSC_VIEWER_ASCII_INFO_DETAIL));
166	4/6 ✓ Branch 0 taken 2 times. ✓ Branch 1 taken 8 times. ✓ Branch 2 taken 2 times. ✗ Branch 3 not taken. ✗ Branch 4 not taken. ✓ Branch 5 taken 2 times.	10	PetscCall(NEPConvergedReasonView(nep,viewer));
167	4/6 ✓ Branch 0 taken 2 times. ✓ Branch 1 taken 8 times. ✓ Branch 2 taken 2 times. ✗ Branch 3 not taken. ✗ Branch 4 not taken. ✓ Branch 5 taken 2 times.	10	PetscCall(PetscOptionsHasName(NULL,NULL,"-terse",&terse));
168	1/8 ✗ Branch 0 not taken. ✓ Branch 1 taken 10 times. ✗ Branch 2 not taken. ✗ Branch 3 not taken. ✗ Branch 4 not taken. ✗ Branch 5 not taken. ✗ Branch 6 not taken. ✗ Branch 7 not taken.	10	if (!terse) PetscCall(NEPErrorView(nep,NEP_ERROR_BACKWARD,viewer));
169	4/6 ✓ Branch 0 taken 2 times. ✓ Branch 1 taken 8 times. ✓ Branch 2 taken 2 times. ✗ Branch 3 not taken. ✗ Branch 4 not taken. ✓ Branch 5 taken 2 times.	10	PetscCall(PetscViewerPopFormat(viewer));
170
171	4/6 ✓ Branch 0 taken 2 times. ✓ Branch 1 taken 8 times. ✓ Branch 2 taken 2 times. ✗ Branch 3 not taken. ✗ Branch 4 not taken. ✓ Branch 5 taken 2 times.	10	PetscCall(NEPDestroy(&nep));
172	4/6 ✓ Branch 0 taken 2 times. ✓ Branch 1 taken 8 times. ✓ Branch 2 taken 2 times. ✗ Branch 3 not taken. ✗ Branch 4 not taken. ✓ Branch 5 taken 2 times.	10	PetscCall(MatDestroy(&Id));
173	4/6 ✓ Branch 0 taken 2 times. ✓ Branch 1 taken 8 times. ✓ Branch 2 taken 2 times. ✗ Branch 3 not taken. ✗ Branch 4 not taken. ✓ Branch 5 taken 2 times.	10	PetscCall(MatDestroy(&A));
174	4/6 ✓ Branch 0 taken 2 times. ✓ Branch 1 taken 8 times. ✓ Branch 2 taken 2 times. ✗ Branch 3 not taken. ✗ Branch 4 not taken. ✓ Branch 5 taken 2 times.	10	PetscCall(MatDestroy(&B));
175	4/6 ✓ Branch 0 taken 2 times. ✓ Branch 1 taken 8 times. ✓ Branch 2 taken 2 times. ✗ Branch 3 not taken. ✗ Branch 4 not taken. ✓ Branch 5 taken 2 times.	10	PetscCall(FNDestroy(&f1));
176	4/6 ✓ Branch 0 taken 2 times. ✓ Branch 1 taken 8 times. ✓ Branch 2 taken 2 times. ✗ Branch 3 not taken. ✗ Branch 4 not taken. ✓ Branch 5 taken 2 times.	10	PetscCall(FNDestroy(&f2));
177	4/6 ✓ Branch 0 taken 2 times. ✓ Branch 1 taken 8 times. ✓ Branch 2 taken 2 times. ✗ Branch 3 not taken. ✗ Branch 4 not taken. ✓ Branch 5 taken 2 times.	10	PetscCall(FNDestroy(&f3));
178	5/8 ✓ Branch 0 taken 10 times. ✗ Branch 1 not taken. ✓ Branch 2 taken 2 times. ✓ Branch 3 taken 8 times. ✓ Branch 4 taken 2 times. ✗ Branch 5 not taken. ✗ Branch 6 not taken. ✓ Branch 7 taken 2 times.	10	PetscCall(PetscFree(ctx));
179	3/6 ✓ Branch 0 taken 2 times. ✓ Branch 1 taken 2 times. ✓ Branch 2 taken 2 times. ✗ Branch 3 not taken. ✗ Branch 4 not taken. ✗ Branch 5 not taken.	10	PetscCall(SlepcFinalize());
180			return 0;
181			}
182
183			/*
184			Function for user-defined stopping test.
185
186			Ignores the value of nev. It only takes into account the number of
187			eigenpairs that have converged in recent outer iterations (restarts);
188			if no new eigenvalues have converged in the last few restarts,
189			we stop the iteration, assuming that no more eigenvalues are present
190			inside the region.
191			*/
192		120	PetscErrorCode MyStoppingTest(NEP nep,PetscInt its,PetscInt max_it,PetscInt nconv,PetscInt nev,NEPConvergedReason reason,void ptr)
193			{
194		120	CTX_DELAY ctx = (CTX_DELAY)ptr;
195
196	1/2 ✓ Branch 0 taken 2 times. ✗ Branch 1 not taken.	120	PetscFunctionBeginUser;
197			/* check usual termination conditions, but ignoring the case nconv>=nev */
198	4/6 ✓ Branch 0 taken 2 times. ✓ Branch 1 taken 8 times. ✓ Branch 2 taken 2 times. ✗ Branch 3 not taken. ✗ Branch 4 not taken. ✓ Branch 5 taken 2 times.	120	PetscCall(NEPStoppingBasic(nep,its,max_it,nconv,PETSC_INT_MAX,reason,NULL));
199	1/2 ✓ Branch 0 taken 10 times. ✗ Branch 1 not taken.	120	if (*reason==NEP_CONVERGED_ITERATING) {
200			/* check if nconv is the same as before */
201	2/2 ✓ Branch 0 taken 10 times. ✓ Branch 1 taken 10 times.	120	if (nconv==ctx->lastnconv) ctx->nreps++;
202			else {
203		10	ctx->lastnconv = nconv;
204		10	ctx->nreps = 0;
205			}
206			/* check if no eigenvalues converged in last 10 restarts */
207	3/4 ✓ Branch 0 taken 10 times. ✗ Branch 1 not taken. ✓ Branch 2 taken 10 times. ✓ Branch 3 taken 10 times.	120	if (nconv && ctx->nreps>10) *reason = NEP_CONVERGED_USER;
208			}
209	5/12 ✓ Branch 0 taken 2 times. ✗ Branch 1 not taken. ✗ Branch 2 not taken. ✓ Branch 3 taken 2 times. ✓ Branch 4 taken 2 times. ✗ Branch 5 not taken. ✓ Branch 6 taken 2 times. ✗ Branch 7 not taken. ✗ Branch 8 not taken. ✓ Branch 9 taken 2 times. ✗ Branch 10 not taken. ✗ Branch 11 not taken.	24	PetscFunctionReturn(PETSC_SUCCESS);
210			}
211
212			/*TEST
213
214			test:
215			suffix: 1
216			args: -terse
217
218			TEST*/
219

Function (Line)	Call count	Block coverage
MyStoppingTest (line 192)	called 120 times	91.0%
main (line 46)	called 10 times	82.0%