GCC Code Coverage Report

Directory:	./
File:	src/nep/tests/test16.c
Date:	2025-11-19 04:19:03

	Exec	Total	Coverage
Lines:	78	85	91.8%
Functions:	3	3	100.0%
Branches:	157	284	55.3%

  
      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 use of NEPSetEigenvalueComparison().\n\n"
    
        "This is a simplified version of ex20.\n"
    
        "The command line options are:\n"
    
        "  -n <n>, where <n> = number of grid subdivisions.\n";
    
      /*
    
         Solve 1-D PDE
    
                  -u'' = lambda*u
    
         on [0,1] subject to
    
                  u(0)=0, u'(1)=u(1)*lambda*kappa/(kappa-lambda)
    
      */
    
      #include <slepcnep.h>
    
      /*
    
         User-defined routines
    
      */
    
      PetscErrorCode FormFunction(NEP,PetscScalar,Mat,Mat,void*);
    
      PetscErrorCode MyEigenSort(PetscScalar,PetscScalar,PetscScalar,PetscScalar,PetscInt*,void*);
    
      /*
    
         User-defined application context
    
      */
    
      typedef struct {
    
        PetscScalar kappa;   /* ratio between stiffness of spring and attached mass */
    
        PetscReal   h;       /* mesh spacing */
    
      } ApplicationCtx;
    
      5
      int main(int argc,char **argv)
    
      {
    
      5
        NEP            nep;             /* nonlinear eigensolver context */
    
      5
        Mat            F;               /* Function matrix */
    
      5
        ApplicationCtx ctx;             /* user-defined context */
    
      5
        PetscScalar    target;
    
      5
        RG             rg;
    
      5
        PetscInt       n=128;
    
      5
        PetscBool      terse;
    
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      5
        PetscFunctionBeginUser;
    
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      5
        PetscCall(SlepcInitialize(&argc,&argv,NULL,help));
    
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      5
        PetscCall(PetscOptionsGetInt(NULL,NULL,"-n",&n,NULL));
    
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      5
        PetscCall(PetscPrintf(PETSC_COMM_WORLD,"\n1-D Nonlinear Eigenproblem, n=%" PetscInt_FMT "\n\n",n));
    
      5
        ctx.h = 1.0/(PetscReal)n;
    
      5
        ctx.kappa = 1.0;
    
        /* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
    
                     Prepare nonlinear eigensolver context
    
           - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
    
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      5
        PetscCall(NEPCreate(PETSC_COMM_WORLD,&nep));
    
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      5
        PetscCall(MatCreate(PETSC_COMM_WORLD,&F));
    
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      5
        PetscCall(MatSetSizes(F,PETSC_DECIDE,PETSC_DECIDE,n,n));
    
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      5
        PetscCall(MatSetFromOptions(F));
    
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      5
        PetscCall(MatSeqAIJSetPreallocation(F,3,NULL));
    
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      5
        PetscCall(MatMPIAIJSetPreallocation(F,3,NULL,1,NULL));
    
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      5
        PetscCall(NEPSetFunction(nep,F,F,FormFunction,&ctx));
    
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      5
        PetscCall(NEPSetType(nep,NEPNLEIGS));
    
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      5
        PetscCall(NEPGetRG(nep,&rg));
    
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      5
        PetscCall(RGSetType(rg,RGINTERVAL));
    
      #if defined(PETSC_USE_COMPLEX)
    
        PetscCall(RGIntervalSetEndpoints(rg,2.0,400.0,-0.001,0.001));
    
      #else
    
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      5
        PetscCall(RGIntervalSetEndpoints(rg,2.0,400.0,0,0));
    
      #endif
    
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      5
        PetscCall(NEPSetTarget(nep,25.0));
    
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      5
        PetscCall(NEPSetEigenvalueComparison(nep,MyEigenSort,&target));
    
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      5
        PetscCall(NEPSetTolerances(nep,PETSC_SMALL,PETSC_CURRENT));
    
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      5
        PetscCall(NEPSetFromOptions(nep));
    
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      5
        PetscCall(NEPGetTarget(nep,&target));
    
        /* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
    
                    Solve the eigensystem and display the solution
    
           - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
    
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      5
        PetscCall(NEPSolve(nep));
    
        /* show detailed info unless -terse option is given by user */
    
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      5
        PetscCall(PetscOptionsHasName(NULL,NULL,"-terse",&terse));
    
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      5
        if (terse) PetscCall(NEPErrorView(nep,NEP_ERROR_RELATIVE,NULL));
    
        else {
    
      ✗
          PetscCall(PetscViewerPushFormat(PETSC_VIEWER_STDOUT_WORLD,PETSC_VIEWER_ASCII_INFO_DETAIL));
    
      ✗
          PetscCall(NEPConvergedReasonView(nep,PETSC_VIEWER_STDOUT_WORLD));
    
      ✗
          PetscCall(NEPErrorView(nep,NEP_ERROR_RELATIVE,PETSC_VIEWER_STDOUT_WORLD));
    
      ✗
          PetscCall(PetscViewerPopFormat(PETSC_VIEWER_STDOUT_WORLD));
    
        }
    
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      5
        PetscCall(NEPDestroy(&nep));
    
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      5
        PetscCall(MatDestroy(&F));
    
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      5
        PetscCall(SlepcFinalize());
    
        return 0;
    
      }
    
      /* ------------------------------------------------------------------- */
    
      /*
    
         FormFunction - Computes Function matrix  T(lambda)
    
         Input Parameters:
    
      .  nep    - the NEP context
    
      .  lambda - the scalar argument
    
      .  ctx    - optional user-defined context, as set by NEPSetFunction()
    
         Output Parameters:
    
      .  fun - Function matrix
    
      .  B   - optionally different preconditioning matrix
    
      */
    
      540
      PetscErrorCode FormFunction(NEP nep,PetscScalar lambda,Mat fun,Mat B,void *ctx)
    
      {
    
      540
        ApplicationCtx *user = (ApplicationCtx*)ctx;
    
      540
        PetscScalar    A[3],c,d;
    
      540
        PetscReal      h;
    
      540
        PetscInt       i,n,j[3],Istart,Iend;
    
      540
        PetscBool      FirstBlock=PETSC_FALSE,LastBlock=PETSC_FALSE;
    
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      540
        PetscFunctionBeginUser;
    
        /*
    
           Compute Function entries and insert into matrix
    
        */
    
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      540
        PetscCall(MatGetSize(fun,&n,NULL));
    
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      540
        PetscCall(MatGetOwnershipRange(fun,&Istart,&Iend));
    
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      540
        if (Istart==0) FirstBlock=PETSC_TRUE;
    
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      540
        if (Iend==n) LastBlock=PETSC_TRUE;
    
      540
        h = user->h;
    
      540
        c = user->kappa/(lambda-user->kappa);
    
      540
        d = n;
    
        /*
    
           Interior grid points
    
        */
    
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      68580
        for (i=(FirstBlock? Istart+1: Istart);i<(LastBlock? Iend-1: Iend);i++) {
    
      68040
          j[0] = i-1; j[1] = i; j[2] = i+1;
    
      68040
          A[0] = A[2] = -d-lambda*h/6.0; A[1] = 2.0*(d-lambda*h/3.0);
    
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      68040
          PetscCall(MatSetValues(fun,1,&i,3,j,A,INSERT_VALUES));
    
        }
    
        /*
    
           Boundary points
    
        */
    
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      540
        if (FirstBlock) {
    
      540
          i = 0;
    
      540
          j[0] = 0; j[1] = 1;
    
      540
          A[0] = 2.0*(d-lambda*h/3.0); A[1] = -d-lambda*h/6.0;
    
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      540
          PetscCall(MatSetValues(fun,1,&i,2,j,A,INSERT_VALUES));
    
        }
    
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      540
        if (LastBlock) {
    
      540
          i = n-1;
    
      540
          j[0] = n-2; j[1] = n-1;
    
      540
          A[0] = -d-lambda*h/6.0; A[1] = d-lambda*h/3.0+lambda*c;
    
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      540
          PetscCall(MatSetValues(fun,1,&i,2,j,A,INSERT_VALUES));
    
        }
    
        /*
    
           Assemble matrix
    
        */
    
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      540
        PetscCall(MatAssemblyBegin(B,MAT_FINAL_ASSEMBLY));
    
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      540
        PetscCall(MatAssemblyEnd(B,MAT_FINAL_ASSEMBLY));
    
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      540
        if (fun != B) {
    
      ✗
          PetscCall(MatAssemblyBegin(fun,MAT_FINAL_ASSEMBLY));
    
      ✗
          PetscCall(MatAssemblyEnd(fun,MAT_FINAL_ASSEMBLY));
    
        }
    
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      108
        PetscFunctionReturn(PETSC_SUCCESS);
    
      }
    
      /*
    
          Function for user-defined eigenvalue ordering criterion.
    
          Given two eigenvalues ar+i*ai and br+i*bi, the subroutine must choose
    
          one of them as the preferred one according to the criterion.
    
          In this example, eigenvalues are sorted with respect to the target,
    
          but those on the right of the target are preferred.
    
      */
    
      1028
      PetscErrorCode MyEigenSort(PetscScalar ar,PetscScalar ai,PetscScalar br,PetscScalar bi,PetscInt *r,void *ctx)
    
      {
    
      1028
        PetscReal   a,b;
    
      1028
        PetscScalar target = *(PetscScalar*)ctx;
    
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      1028
        PetscFunctionBeginUser;
    
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      1028
        if (PetscRealPart(ar-target)<0.0 && PetscRealPart(br-target)>0.0) *r = 1;
    
        else {
    
      581
          a = SlepcAbsEigenvalue(ar-target,ai);
    
      581
          b = SlepcAbsEigenvalue(br-target,bi);
    
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      581
          if (a>b) *r = 1;
    
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      445
          else if (a<b) *r = -1;
    
      ✗
          else *r = 0;
    
        }
    
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      1028
        PetscFunctionReturn(PETSC_SUCCESS);
    
      }
    
      /*TEST
    
         test:
    
            suffix: 1
    
            args: -nep_nev 4 -nep_ncv 8 -terse
    
            requires: double !complex
    
      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 use of NEPSetEigenvalueComparison().\n\n"
12			"This is a simplified version of ex20.\n"
13			"The command line options are:\n"
14			" -n <n>, where <n> = number of grid subdivisions.\n";
15
16			/*
17			Solve 1-D PDE
18			-u'' = lambda*u
19			on [0,1] subject to
20			u(0)=0, u'(1)=u(1)lambdakappa/(kappa-lambda)
21			*/
22
23			#include <slepcnep.h>
24
25			/*
26			User-defined routines
27			*/
28			PetscErrorCode FormFunction(NEP,PetscScalar,Mat,Mat,void*);
29			PetscErrorCode MyEigenSort(PetscScalar,PetscScalar,PetscScalar,PetscScalar,PetscInt,void);
30
31			/*
32			User-defined application context
33			*/
34			typedef struct {
35			PetscScalar kappa; /* ratio between stiffness of spring and attached mass */
36			PetscReal h; /* mesh spacing */
37			} ApplicationCtx;
38
39		5	int main(int argc,char **argv)
40			{
41		5	NEP nep; /* nonlinear eigensolver context */
42		5	Mat F; /* Function matrix */
43		5	ApplicationCtx ctx; /* user-defined context */
44		5	PetscScalar target;
45		5	RG rg;
46		5	PetscInt n=128;
47		5	PetscBool terse;
48
49	1/2 ✓ Branch 0 taken 1 times. ✗ Branch 1 not taken.	5	PetscFunctionBeginUser;
50	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(SlepcInitialize(&argc,&argv,NULL,help));
51	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(PetscOptionsGetInt(NULL,NULL,"-n",&n,NULL));
52	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(PetscPrintf(PETSC_COMM_WORLD,"\n1-D Nonlinear Eigenproblem, n=%" PetscInt_FMT "\n\n",n));
53		5	ctx.h = 1.0/(PetscReal)n;
54		5	ctx.kappa = 1.0;
55
56			/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
57			Prepare nonlinear eigensolver context
58			- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
59
60	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(NEPCreate(PETSC_COMM_WORLD,&nep));
61
62	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(MatCreate(PETSC_COMM_WORLD,&F));
63	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(MatSetSizes(F,PETSC_DECIDE,PETSC_DECIDE,n,n));
64	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(MatSetFromOptions(F));
65	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(MatSeqAIJSetPreallocation(F,3,NULL));
66	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(MatMPIAIJSetPreallocation(F,3,NULL,1,NULL));
67	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(NEPSetFunction(nep,F,F,FormFunction,&ctx));
68
69	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(NEPSetType(nep,NEPNLEIGS));
70	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(NEPGetRG(nep,&rg));
71	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(RGSetType(rg,RGINTERVAL));
72			#if defined(PETSC_USE_COMPLEX)
73			PetscCall(RGIntervalSetEndpoints(rg,2.0,400.0,-0.001,0.001));
74			#else
75	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,2.0,400.0,0,0));
76			#endif
77	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(NEPSetTarget(nep,25.0));
78	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(NEPSetEigenvalueComparison(nep,MyEigenSort,&target));
79	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(NEPSetTolerances(nep,PETSC_SMALL,PETSC_CURRENT));
80	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(NEPSetFromOptions(nep));
81	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(NEPGetTarget(nep,&target));
82
83			/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
84			Solve the eigensystem and display the solution
85			- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
86
87	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(NEPSolve(nep));
88
89			/* show detailed info unless -terse option is given by user */
90	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(PetscOptionsHasName(NULL,NULL,"-terse",&terse));
91	5/8 ✓ Branch 0 taken 5 times. ✗ Branch 1 not taken. ✓ Branch 2 taken 1 times. ✓ Branch 3 taken 4 times. ✓ Branch 4 taken 1 times. ✗ Branch 5 not taken. ✗ Branch 6 not taken. ✓ Branch 7 taken 1 times.	5	if (terse) PetscCall(NEPErrorView(nep,NEP_ERROR_RELATIVE,NULL));
92			else {
93		✗	PetscCall(PetscViewerPushFormat(PETSC_VIEWER_STDOUT_WORLD,PETSC_VIEWER_ASCII_INFO_DETAIL));
94		✗	PetscCall(NEPConvergedReasonView(nep,PETSC_VIEWER_STDOUT_WORLD));
95		✗	PetscCall(NEPErrorView(nep,NEP_ERROR_RELATIVE,PETSC_VIEWER_STDOUT_WORLD));
96		✗	PetscCall(PetscViewerPopFormat(PETSC_VIEWER_STDOUT_WORLD));
97			}
98
99	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(NEPDestroy(&nep));
100	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(MatDestroy(&F));
101	3/6 ✓ Branch 0 taken 1 times. ✓ Branch 1 taken 1 times. ✓ Branch 2 taken 1 times. ✗ Branch 3 not taken. ✗ Branch 4 not taken. ✗ Branch 5 not taken.	5	PetscCall(SlepcFinalize());
102			return 0;
103			}
104
105			/* ------------------------------------------------------------------- */
106			/*
107			FormFunction - Computes Function matrix T(lambda)
108
109			Input Parameters:
110			. nep - the NEP context
111			. lambda - the scalar argument
112			. ctx - optional user-defined context, as set by NEPSetFunction()
113
114			Output Parameters:
115			. fun - Function matrix
116			. B - optionally different preconditioning matrix
117			*/
118		540	PetscErrorCode FormFunction(NEP nep,PetscScalar lambda,Mat fun,Mat B,void *ctx)
119			{
120		540	ApplicationCtx user = (ApplicationCtx)ctx;
121		540	PetscScalar A[3],c,d;
122		540	PetscReal h;
123		540	PetscInt i,n,j[3],Istart,Iend;
124		540	PetscBool FirstBlock=PETSC_FALSE,LastBlock=PETSC_FALSE;
125
126	1/2 ✓ Branch 0 taken 1 times. ✗ Branch 1 not taken.	540	PetscFunctionBeginUser;
127			/*
128			Compute Function entries and insert into matrix
129			*/
130	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.	540	PetscCall(MatGetSize(fun,&n,NULL));
131	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.	540	PetscCall(MatGetOwnershipRange(fun,&Istart,&Iend));
132	1/2 ✓ Branch 0 taken 5 times. ✗ Branch 1 not taken.	540	if (Istart==0) FirstBlock=PETSC_TRUE;
133	1/2 ✓ Branch 0 taken 5 times. ✗ Branch 1 not taken.	540	if (Iend==n) LastBlock=PETSC_TRUE;
134		540	h = user->h;
135		540	c = user->kappa/(lambda-user->kappa);
136		540	d = n;
137
138			/*
139			Interior grid points
140			*/
141	4/6 ✓ Branch 0 taken 5 times. ✗ Branch 1 not taken. ✓ Branch 2 taken 5 times. ✗ Branch 3 not taken. ✓ Branch 4 taken 5 times. ✓ Branch 5 taken 5 times.	68580	for (i=(FirstBlock? Istart+1: Istart);i<(LastBlock? Iend-1: Iend);i++) {
142		68040	j[0] = i-1; j[1] = i; j[2] = i+1;
143		68040	A[0] = A[2] = -d-lambdah/6.0; A[1] = 2.0(d-lambda*h/3.0);
144	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.	68040	PetscCall(MatSetValues(fun,1,&i,3,j,A,INSERT_VALUES));
145			}
146
147			/*
148			Boundary points
149			*/
150	1/2 ✓ Branch 0 taken 5 times. ✗ Branch 1 not taken.	540	if (FirstBlock) {
151		540	i = 0;
152		540	j[0] = 0; j[1] = 1;
153		540	A[0] = 2.0(d-lambdah/3.0); A[1] = -d-lambda*h/6.0;
154	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.	540	PetscCall(MatSetValues(fun,1,&i,2,j,A,INSERT_VALUES));
155			}
156
157	1/2 ✓ Branch 0 taken 5 times. ✗ Branch 1 not taken.	540	if (LastBlock) {
158		540	i = n-1;
159		540	j[0] = n-2; j[1] = n-1;
160		540	A[0] = -d-lambdah/6.0; A[1] = d-lambdah/3.0+lambda*c;
161	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.	540	PetscCall(MatSetValues(fun,1,&i,2,j,A,INSERT_VALUES));
162			}
163
164			/*
165			Assemble matrix
166			*/
167	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.	540	PetscCall(MatAssemblyBegin(B,MAT_FINAL_ASSEMBLY));
168	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.	540	PetscCall(MatAssemblyEnd(B,MAT_FINAL_ASSEMBLY));
169	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 5 times.	540	if (fun != B) {
170		✗	PetscCall(MatAssemblyBegin(fun,MAT_FINAL_ASSEMBLY));
171		✗	PetscCall(MatAssemblyEnd(fun,MAT_FINAL_ASSEMBLY));
172			}
173	5/12 ✓ Branch 0 taken 1 times. ✗ Branch 1 not taken. ✗ Branch 2 not taken. ✓ Branch 3 taken 1 times. ✓ Branch 4 taken 1 times. ✗ Branch 5 not taken. ✓ Branch 6 taken 1 times. ✗ Branch 7 not taken. ✗ Branch 8 not taken. ✓ Branch 9 taken 1 times. ✗ Branch 10 not taken. ✗ Branch 11 not taken.	108	PetscFunctionReturn(PETSC_SUCCESS);
174			}
175
176			/*
177			Function for user-defined eigenvalue ordering criterion.
178
179			Given two eigenvalues ar+iai and br+ibi, the subroutine must choose
180			one of them as the preferred one according to the criterion.
181			In this example, eigenvalues are sorted with respect to the target,
182			but those on the right of the target are preferred.
183			*/
184		1028	PetscErrorCode MyEigenSort(PetscScalar ar,PetscScalar ai,PetscScalar br,PetscScalar bi,PetscInt r,void ctx)
185			{
186		1028	PetscReal a,b;
187		1028	PetscScalar target = (PetscScalar)ctx;
188
189	1/2 ✓ Branch 0 taken 1 times. ✗ Branch 1 not taken.	1028	PetscFunctionBeginUser;
190	4/4 ✓ Branch 0 taken 5 times. ✓ Branch 1 taken 5 times. ✓ Branch 2 taken 5 times. ✓ Branch 3 taken 5 times.	1028	if (PetscRealPart(ar-target)<0.0 && PetscRealPart(br-target)>0.0) *r = 1;
191			else {
192		581	a = SlepcAbsEigenvalue(ar-target,ai);
193		581	b = SlepcAbsEigenvalue(br-target,bi);
194	2/2 ✓ Branch 0 taken 5 times. ✓ Branch 1 taken 5 times.	581	if (a>b) *r = 1;
195	1/2 ✓ Branch 0 taken 5 times. ✗ Branch 1 not taken.	445	else if (a<b) *r = -1;
196		✗	else *r = 0;
197			}
198	5/12 ✓ Branch 0 taken 1 times. ✗ Branch 1 not taken. ✗ Branch 2 not taken. ✓ Branch 3 taken 1 times. ✓ Branch 4 taken 1 times. ✗ Branch 5 not taken. ✓ Branch 6 taken 1 times. ✗ Branch 7 not taken. ✗ Branch 8 not taken. ✓ Branch 9 taken 1 times. ✗ Branch 10 not taken. ✗ Branch 11 not taken.	1028	PetscFunctionReturn(PETSC_SUCCESS);
199			}
200
201			/*TEST
202
203			test:
204			suffix: 1
205			args: -nep_nev 4 -nep_ncv 8 -terse
206			requires: double !complex
207
208			TEST*/
209

Function (Line)	Call count	Block coverage
FormFunction (line 118)	called 540 times	70.0%
MyEigenSort (line 184)	called 1028 times	91.0%
main (line 39)	called 5 times	70.0%