GCC Code Coverage Report

Directory:	./
File:	src/mfn/tests/test3.c
Date:	2025-11-19 04:19:03

	Exec	Total	Coverage
Lines:	73	73	100.0%
Functions:	1	1	100.0%
Branches:	237	352	67.3%

  
      Line
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      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[] = "Test MFN interface functions.\n\n"
    
        "The command line options are:\n"
    
        "  -n <n>, where <n> = number of grid subdivisions in x dimension.\n\n";
    
      #include <slepcmfn.h>
    
      28
      int main(int argc,char **argv)
    
      {
    
      28
        Mat                  A,B;
    
      28
        MFN                  mfn;
    
      28
        FN                   f;
    
      28
        MFNConvergedReason   reason;
    
      28
        MFNType              type;
    
      28
        PetscReal            norm,tol;
    
      28
        Vec                  v,y;
    
      28
        PetscInt             N,n=4,Istart,Iend,i,j,II,ncv,its,maxit;
    
      28
        PetscBool            flg,testprefix=PETSC_FALSE;
    
      28
        const char           *prefix;
    
      28
        PetscViewerAndFormat *vf;
    
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      28
        PetscFunctionBeginUser;
    
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      28
        PetscCall(SlepcInitialize(&argc,&argv,NULL,help));
    
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      28
        PetscCall(PetscOptionsGetInt(NULL,NULL,"-n",&n,NULL));
    
      28
        N = n*n;
    
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      28
        PetscCall(PetscPrintf(PETSC_COMM_WORLD,"\nSquare root of Laplacian y=sqrt(A)*e_1, N=%" PetscInt_FMT " (%" PetscInt_FMT "x%" PetscInt_FMT " grid)\n\n",N,n,n));
    
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      28
        PetscCall(PetscOptionsGetBool(NULL,NULL,"-test_prefix",&testprefix,NULL));
    
        /* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
    
                       Compute the discrete 2-D Laplacian, A
    
           - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
    
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      28
        PetscCall(MatCreate(PETSC_COMM_WORLD,&A));
    
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      28
        PetscCall(MatSetSizes(A,PETSC_DECIDE,PETSC_DECIDE,N,N));
    
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      28
        PetscCall(MatSetFromOptions(A));
    
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      28
        PetscCall(MatGetOwnershipRange(A,&Istart,&Iend));
    
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      476
        for (II=Istart;II<Iend;II++) {
    
      448
          i = II/n; j = II-i*n;
    
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      448
          if (i>0) PetscCall(MatSetValue(A,II,II-n,-1.0,INSERT_VALUES));
    
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      448
          if (i<n-1) PetscCall(MatSetValue(A,II,II+n,-1.0,INSERT_VALUES));
    
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      448
          if (j>0) PetscCall(MatSetValue(A,II,II-1,-1.0,INSERT_VALUES));
    
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      448
          if (j<n-1) PetscCall(MatSetValue(A,II,II+1,-1.0,INSERT_VALUES));
    
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      448
          PetscCall(MatSetValue(A,II,II,4.0,INSERT_VALUES));
    
        }
    
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      28
        PetscCall(MatAssemblyBegin(A,MAT_FINAL_ASSEMBLY));
    
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      28
        PetscCall(MatAssemblyEnd(A,MAT_FINAL_ASSEMBLY));
    
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      28
        PetscCall(MatSetOption(A,MAT_HERMITIAN,PETSC_TRUE));
    
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      28
        PetscCall(MatCreateVecs(A,&v,&y));
    
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      28
        PetscCall(VecSetValue(v,0,1.0,INSERT_VALUES));
    
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      28
        PetscCall(VecAssemblyBegin(v));
    
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      28
        PetscCall(VecAssemblyEnd(v));
    
        /* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
    
                   Create the solver, set the matrix and the function
    
           - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
    
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      28
        PetscCall(MFNCreate(PETSC_COMM_WORLD,&mfn));
    
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      28
        PetscCall(MFNSetOperator(mfn,A));
    
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      28
        PetscCall(MFNGetFN(mfn,&f));
    
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      28
        PetscCall(FNSetType(f,FNSQRT));
    
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      28
        PetscCall(MFNSetType(mfn,MFNKRYLOV));
    
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      28
        PetscCall(MFNGetType(mfn,&type));
    
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      28
        PetscCall(PetscPrintf(PETSC_COMM_WORLD," Type set to %s\n",type));
    
        /* test prefix usage */
    
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      28
        if (testprefix) {
    
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      10
          PetscCall(MFNSetOptionsPrefix(mfn,"check_"));
    
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      10
          PetscCall(MFNAppendOptionsPrefix(mfn,"myprefix_"));
    
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      10
          PetscCall(MFNGetOptionsPrefix(mfn,&prefix));
    
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      10
          PetscCall(PetscPrintf(PETSC_COMM_WORLD," MFN prefix is currently: %s\n",prefix));
    
        }
    
        /* test some interface functions */
    
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      28
        PetscCall(MFNGetOperator(mfn,&B));
    
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      28
        PetscCall(MatView(B,PETSC_VIEWER_STDOUT_WORLD));
    
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      28
        PetscCall(MFNSetTolerances(mfn,1e-4,500));
    
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      28
        PetscCall(MFNSetDimensions(mfn,6));
    
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      28
        PetscCall(MFNSetErrorIfNotConverged(mfn,PETSC_TRUE));
    
        /* test monitors */
    
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      28
        PetscCall(PetscViewerAndFormatCreate(PETSC_VIEWER_STDOUT_WORLD,PETSC_VIEWER_DEFAULT,&vf));
    
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      28
        PetscCall(MFNMonitorSet(mfn,(PetscErrorCode (*)(MFN,PetscInt,PetscReal,void*))MFNMonitorDefault,vf,(PetscCtxDestroyFn*)PetscViewerAndFormatDestroy));
    
        /* PetscCall(MFNMonitorCancel(mfn)); */
    
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      28
        PetscCall(MFNSetFromOptions(mfn));
    
        /* query properties and print them */
    
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      28
        PetscCall(MFNGetTolerances(mfn,&tol,&maxit));
    
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      28
        PetscCall(PetscPrintf(PETSC_COMM_WORLD," Tolerance: %g, max iterations: %" PetscInt_FMT "\n",(double)tol,maxit));
    
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        PetscCall(MFNGetDimensions(mfn,&ncv));
    
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        PetscCall(PetscPrintf(PETSC_COMM_WORLD," Subspace dimension: %" PetscInt_FMT "\n",ncv));
    
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        PetscCall(MFNGetErrorIfNotConverged(mfn,&flg));
    
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        if (flg) PetscCall(PetscPrintf(PETSC_COMM_WORLD," Erroring out if convergence fails\n"));
    
        /* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
    
                                 Solve  y=sqrt(A)*v
    
           - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
    
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      28
        PetscCall(MFNSolve(mfn,v,y));
    
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      28
        PetscCall(MFNGetConvergedReason(mfn,&reason));
    
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        PetscCall(MFNGetIterationNumber(mfn,&its));
    
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      28
        PetscCall(PetscPrintf(PETSC_COMM_WORLD," Finished - converged reason = %d\n",(int)reason));
    
        /* PetscCall(PetscPrintf(PETSC_COMM_WORLD," its = %" PetscInt_FMT "\n",its)); */
    
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        PetscCall(VecNorm(y,NORM_2,&norm));
    
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      28
        PetscCall(PetscPrintf(PETSC_COMM_WORLD," sqrt(A)*v has norm %g\n",(double)norm));
    
        /*
    
           Free work space
    
        */
    
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        PetscCall(MFNDestroy(&mfn));
    
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        PetscCall(MatDestroy(&A));
    
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        PetscCall(VecDestroy(&v));
    
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        PetscCall(VecDestroy(&y));
    
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      28
        PetscCall(SlepcFinalize());
    
        return 0;
    
      }
    
      /*TEST
    
         testset:
    
            args: -mfn_monitor_cancel -mfn_converged_reason -mfn_view -log_exclude mfn,bv,fn
    
            output_file: output/test3_1.out
    
            test:
    
               suffix: 1
    
            test:
    
               suffix: 1_x
    
               args: -mfn_monitor draw::draw_lg -draw_virtual
    
               requires: x
    
         test:
    
            suffix: 2
    
            args: -test_prefix -check_myprefix_mfn_monitor
    
            filter: sed -e "s/estimate [0-9]\.[0-9]*e[+-]\([0-9]*\)/estimate (removed)/g" | sed -e "s/4.0[0-9]*e-10/4.03e-10/"
    
      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[] = "Test MFN interface functions.\n\n"
12			"The command line options are:\n"
13			" -n <n>, where <n> = number of grid subdivisions in x dimension.\n\n";
14
15			#include <slepcmfn.h>
16
17		28	int main(int argc,char **argv)
18			{
19		28	Mat A,B;
20		28	MFN mfn;
21		28	FN f;
22		28	MFNConvergedReason reason;
23		28	MFNType type;
24		28	PetscReal norm,tol;
25		28	Vec v,y;
26		28	PetscInt N,n=4,Istart,Iend,i,j,II,ncv,its,maxit;
27		28	PetscBool flg,testprefix=PETSC_FALSE;
28		28	const char *prefix;
29		28	PetscViewerAndFormat *vf;
30
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32	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.	28	PetscCall(SlepcInitialize(&argc,&argv,NULL,help));
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34		28	N = n*n;
35	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.	28	PetscCall(PetscPrintf(PETSC_COMM_WORLD,"\nSquare root of Laplacian y=sqrt(A)*e_1, N=%" PetscInt_FMT " (%" PetscInt_FMT "x%" PetscInt_FMT " grid)\n\n",N,n,n));
36	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.	28	PetscCall(PetscOptionsGetBool(NULL,NULL,"-test_prefix",&testprefix,NULL));
37
38			/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
39			Compute the discrete 2-D Laplacian, A
40			- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
41
42	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.	28	PetscCall(MatCreate(PETSC_COMM_WORLD,&A));
43	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.	28	PetscCall(MatSetSizes(A,PETSC_DECIDE,PETSC_DECIDE,N,N));
44	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.	28	PetscCall(MatSetFromOptions(A));
45
46	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.	28	PetscCall(MatGetOwnershipRange(A,&Istart,&Iend));
47	2/2 ✓ Branch 0 taken 10 times. ✓ Branch 1 taken 10 times.	476	for (II=Istart;II<Iend;II++) {
48		448	i = II/n; j = II-i*n;
49	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.	448	if (i>0) PetscCall(MatSetValue(A,II,II-n,-1.0,INSERT_VALUES));
50	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.	448	if (i<n-1) PetscCall(MatSetValue(A,II,II+n,-1.0,INSERT_VALUES));
51	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.	448	if (j>0) PetscCall(MatSetValue(A,II,II-1,-1.0,INSERT_VALUES));
52	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.	448	if (j<n-1) PetscCall(MatSetValue(A,II,II+1,-1.0,INSERT_VALUES));
53	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.	448	PetscCall(MatSetValue(A,II,II,4.0,INSERT_VALUES));
54			}
55
56	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.	28	PetscCall(MatAssemblyBegin(A,MAT_FINAL_ASSEMBLY));
57	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.	28	PetscCall(MatAssemblyEnd(A,MAT_FINAL_ASSEMBLY));
58	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.	28	PetscCall(MatSetOption(A,MAT_HERMITIAN,PETSC_TRUE));
59
60	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.	28	PetscCall(MatCreateVecs(A,&v,&y));
61	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.	28	PetscCall(VecSetValue(v,0,1.0,INSERT_VALUES));
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.	28	PetscCall(VecAssemblyBegin(v));
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.	28	PetscCall(VecAssemblyEnd(v));
64
65			/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
66			Create the solver, set the matrix and the function
67			- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
68	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.	28	PetscCall(MFNCreate(PETSC_COMM_WORLD,&mfn));
69	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.	28	PetscCall(MFNSetOperator(mfn,A));
70	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.	28	PetscCall(MFNGetFN(mfn,&f));
71	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.	28	PetscCall(FNSetType(f,FNSQRT));
72
73	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.	28	PetscCall(MFNSetType(mfn,MFNKRYLOV));
74	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.	28	PetscCall(MFNGetType(mfn,&type));
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.	28	PetscCall(PetscPrintf(PETSC_COMM_WORLD," Type set to %s\n",type));
76
77			/* test prefix usage */
78	2/2 ✓ Branch 0 taken 10 times. ✓ Branch 1 taken 10 times.	28	if (testprefix) {
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(MFNSetOptionsPrefix(mfn,"check_"));
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(MFNAppendOptionsPrefix(mfn,"myprefix_"));
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(MFNGetOptionsPrefix(mfn,&prefix));
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(PetscPrintf(PETSC_COMM_WORLD," MFN prefix is currently: %s\n",prefix));
83			}
84
85			/* test some interface functions */
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.	28	PetscCall(MFNGetOperator(mfn,&B));
87	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.	28	PetscCall(MatView(B,PETSC_VIEWER_STDOUT_WORLD));
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.	28	PetscCall(MFNSetTolerances(mfn,1e-4,500));
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.	28	PetscCall(MFNSetDimensions(mfn,6));
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.	28	PetscCall(MFNSetErrorIfNotConverged(mfn,PETSC_TRUE));
91			/* test monitors */
92	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.	28	PetscCall(PetscViewerAndFormatCreate(PETSC_VIEWER_STDOUT_WORLD,PETSC_VIEWER_DEFAULT,&vf));
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.	28	PetscCall(MFNMonitorSet(mfn,(PetscErrorCode ()(MFN,PetscInt,PetscReal,void))MFNMonitorDefault,vf,(PetscCtxDestroyFn*)PetscViewerAndFormatDestroy));
94			/* PetscCall(MFNMonitorCancel(mfn)); */
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.	28	PetscCall(MFNSetFromOptions(mfn));
96
97			/* query properties and print them */
98	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.	28	PetscCall(MFNGetTolerances(mfn,&tol,&maxit));
99	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.	28	PetscCall(PetscPrintf(PETSC_COMM_WORLD," Tolerance: %g, max iterations: %" PetscInt_FMT "\n",(double)tol,maxit));
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.	28	PetscCall(MFNGetDimensions(mfn,&ncv));
101	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.	28	PetscCall(PetscPrintf(PETSC_COMM_WORLD," Subspace dimension: %" PetscInt_FMT "\n",ncv));
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.	28	PetscCall(MFNGetErrorIfNotConverged(mfn,&flg));
103	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.	28	if (flg) PetscCall(PetscPrintf(PETSC_COMM_WORLD," Erroring out if convergence fails\n"));
104
105			/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
106			Solve y=sqrt(A)*v
107			- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
108
109	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.	28	PetscCall(MFNSolve(mfn,v,y));
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.	28	PetscCall(MFNGetConvergedReason(mfn,&reason));
111	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.	28	PetscCall(MFNGetIterationNumber(mfn,&its));
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.	28	PetscCall(PetscPrintf(PETSC_COMM_WORLD," Finished - converged reason = %d\n",(int)reason));
113			/* PetscCall(PetscPrintf(PETSC_COMM_WORLD," its = %" PetscInt_FMT "\n",its)); */
114	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.	28	PetscCall(VecNorm(y,NORM_2,&norm));
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.	28	PetscCall(PetscPrintf(PETSC_COMM_WORLD," sqrt(A)*v has norm %g\n",(double)norm));
116
117			/*
118			Free work space
119			*/
120	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.	28	PetscCall(MFNDestroy(&mfn));
121	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.	28	PetscCall(MatDestroy(&A));
122	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.	28	PetscCall(VecDestroy(&v));
123	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.	28	PetscCall(VecDestroy(&y));
124	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.	28	PetscCall(SlepcFinalize());
125			return 0;
126			}
127
128			/*TEST
129
130			testset:
131			args: -mfn_monitor_cancel -mfn_converged_reason -mfn_view -log_exclude mfn,bv,fn
132			output_file: output/test3_1.out
133			test:
134			suffix: 1
135			test:
136			suffix: 1_x
137			args: -mfn_monitor draw::draw_lg -draw_virtual
138			requires: x
139
140			test:
141			suffix: 2
142			args: -test_prefix -check_myprefix_mfn_monitor
143			filter: sed -e "s/estimate [0-9]\.[0-9]e[+-]\([0-9]\)/estimate (removed)/g" \| sed -e "s/4.0[0-9]*e-10/4.03e-10/"
144
145			TEST*/
146