GCC Code Coverage Report

Directory:	./
File:	src/eps/tests/test12.c
Date:	2025-10-04 04:19:13

	Exec	Total	Coverage
Lines:	61	61	100.0%
Functions:	2	2	100.0%
Branches:	179	272	65.8%

  
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      /*
    
         - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
    
         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[] = "Diagonal eigenproblem. Illustrates use of shell preconditioner.\n\n"
    
        "The command line options are:\n"
    
        "  -n <n>, where <n> = number of grid subdivisions = matrix dimension.\n"
    
        "  -seed <s>, where <s> = seed for random number generation.\n\n";
    
      #include <slepceps.h>
    
      typedef struct {
    
        PetscScalar target;
    
      } PCCtx;
    
      8806
      PetscErrorCode PCApply_User(PC pc,Vec x,Vec y)
    
      {
    
      8806
        PetscInt    i,rstart,rend;
    
      8806
        PetscScalar *yarray;
    
      8806
        PCCtx       *ctx;
    
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      8806
        PetscFunctionBeginUser;
    
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      8806
        PetscCall(PCShellGetContext(pc,&ctx));
    
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      8806
        PetscCall(VecCopy(x,y));
    
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      8806
        PetscCall(VecGetOwnershipRange(y,&rstart,&rend));
    
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      8806
        PetscCall(VecGetArray(y,&yarray));
    
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      272986
        for (i=0;i<rend-rstart;i++) yarray[i] /= (i-rstart+1-ctx->target);
    
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      8806
        PetscCall(VecRestoreArray(y,&yarray));
    
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      1755
        PetscFunctionReturn(PETSC_SUCCESS);
    
      }
    
      70
      int main(int argc,char **argv)
    
      {
    
      70
        Mat            A;           /* problem matrix */
    
      70
        EPS            eps;         /* eigenproblem solver context */
    
      70
        Vec            v0;          /* initial vector */
    
      70
        PetscRandom    rand;
    
      70
        PetscReal      tol=PETSC_SMALL;
    
      70
        PetscInt       n=30,i,Istart,Iend,seed=0x12345678;
    
      70
        ST             st;
    
      70
        KSP            ksp;
    
      70
        PC             pc;
    
      70
        PCCtx          ctx;
    
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      70
        PetscFunctionBeginUser;
    
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      70
        PetscCall(SlepcInitialize(&argc,&argv,NULL,help));
    
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      70
        PetscCall(PetscOptionsGetInt(NULL,NULL,"-n",&n,NULL));
    
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      70
        PetscCall(PetscPrintf(PETSC_COMM_WORLD,"\nDiagonal Eigenproblem, n=%" PetscInt_FMT "\n\n",n));
    
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      70
        PetscCall(MatCreate(PETSC_COMM_WORLD,&A));
    
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      70
        PetscCall(MatSetSizes(A,PETSC_DECIDE,PETSC_DECIDE,n,n));
    
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      70
        PetscCall(MatSetFromOptions(A));
    
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      70
        PetscCall(MatGetOwnershipRange(A,&Istart,&Iend));
    
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      2170
        for (i=Istart;i<Iend;i++) PetscCall(MatSetValue(A,i,i,i+1,INSERT_VALUES));
    
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      70
        PetscCall(MatAssemblyBegin(A,MAT_FINAL_ASSEMBLY));
    
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      70
        PetscCall(MatAssemblyEnd(A,MAT_FINAL_ASSEMBLY));
    
        /* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
    
                            Solve the eigensystem
    
           - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
    
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      70
        PetscCall(EPSCreate(PETSC_COMM_WORLD,&eps));
    
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      70
        PetscCall(EPSSetOperators(eps,A,NULL));
    
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      70
        PetscCall(EPSSetProblemType(eps,EPS_HEP));
    
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      70
        PetscCall(EPSSetTolerances(eps,tol,PETSC_CURRENT));
    
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      70
        PetscCall(EPSSetFromOptions(eps));
    
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      70
        PetscCall(EPSGetST(eps,&st));
    
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      70
        PetscCall(STGetKSP(st,&ksp));
    
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      70
        PetscCall(KSPGetPC(ksp,&pc));
    
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      70
        PetscCall(PCSetType(pc,PCSHELL));
    
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      70
        PetscCall(PCShellSetApply(pc,PCApply_User));
    
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      70
        PetscCall(EPSGetTarget(eps,&ctx.target));
    
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      70
        PetscCall(PCShellSetContext(pc,&ctx));
    
        /* set random initial vector */
    
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      70
        PetscCall(MatCreateVecs(A,&v0,NULL));
    
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      70
        PetscCall(PetscRandomCreate(PETSC_COMM_WORLD,&rand));
    
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      70
        PetscCall(PetscRandomSetFromOptions(rand));
    
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      70
        PetscCall(PetscOptionsGetInt(NULL,NULL,"-seed",&seed,NULL));
    
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      70
        PetscCall(PetscRandomSetSeed(rand,seed));
    
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      70
        PetscCall(PetscRandomSeed(rand));
    
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      70
        PetscCall(VecSetRandom(v0,rand));
    
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      70
        PetscCall(EPSSetInitialSpace(eps,1,&v0));
    
        /* call the solver */
    
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      70
        PetscCall(EPSSolve(eps));
    
        /* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
    
                          Display solution and clean up
    
           - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
    
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      70
        PetscCall(EPSErrorView(eps,EPS_ERROR_RELATIVE,NULL));
    
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      70
        PetscCall(EPSDestroy(&eps));
    
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      70
        PetscCall(MatDestroy(&A));
    
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      70
        PetscCall(VecDestroy(&v0));
    
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      70
        PetscCall(PetscRandomDestroy(&rand));
    
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      70
        PetscCall(SlepcFinalize());
    
        return 0;
    
      }
    
      /*TEST
    
         testset:
    
            args: -eps_nev 4 -eps_target 31
    
            requires: !single
    
            output_file: output/test12_1.out
    
            test:
    
               suffix: 1
    
               args: -eps_type {{krylovschur subspace arnoldi power}} -st_type sinvert
    
            test:
    
               suffix: 1_gd
    
               args: -eps_type {{gd jd}}
    
            test:
    
               suffix: 1_gd2
    
               args: -eps_type gd -eps_gd_double_expansion
    
      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[] = "Diagonal eigenproblem. Illustrates use of shell preconditioner.\n\n"
12			"The command line options are:\n"
13			" -n <n>, where <n> = number of grid subdivisions = matrix dimension.\n"
14			" -seed <s>, where <s> = seed for random number generation.\n\n";
15
16			#include <slepceps.h>
17
18			typedef struct {
19			PetscScalar target;
20			} PCCtx;
21
22		8806	PetscErrorCode PCApply_User(PC pc,Vec x,Vec y)
23			{
24		8806	PetscInt i,rstart,rend;
25		8806	PetscScalar *yarray;
26		8806	PCCtx *ctx;
27
28	1/2 ✓ Branch 0 taken 2 times. ✗ Branch 1 not taken.	8806	PetscFunctionBeginUser;
29	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.	8806	PetscCall(PCShellGetContext(pc,&ctx));
30	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.	8806	PetscCall(VecCopy(x,y));
31	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.	8806	PetscCall(VecGetOwnershipRange(y,&rstart,&rend));
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.	8806	PetscCall(VecGetArray(y,&yarray));
33	2/2 ✓ Branch 0 taken 10 times. ✓ Branch 1 taken 10 times.	272986	for (i=0;i<rend-rstart;i++) yarray[i] /= (i-rstart+1-ctx->target);
34	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.	8806	PetscCall(VecRestoreArray(y,&yarray));
35	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.	1755	PetscFunctionReturn(PETSC_SUCCESS);
36			}
37
38		70	int main(int argc,char **argv)
39			{
40		70	Mat A; /* problem matrix */
41		70	EPS eps; /* eigenproblem solver context */
42		70	Vec v0; /* initial vector */
43		70	PetscRandom rand;
44		70	PetscReal tol=PETSC_SMALL;
45		70	PetscInt n=30,i,Istart,Iend,seed=0x12345678;
46		70	ST st;
47		70	KSP ksp;
48		70	PC pc;
49		70	PCCtx ctx;
50
51	1/2 ✓ Branch 0 taken 2 times. ✗ Branch 1 not taken.	70	PetscFunctionBeginUser;
52	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.	70	PetscCall(SlepcInitialize(&argc,&argv,NULL,help));
53
54	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.	70	PetscCall(PetscOptionsGetInt(NULL,NULL,"-n",&n,NULL));
55	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.	70	PetscCall(PetscPrintf(PETSC_COMM_WORLD,"\nDiagonal Eigenproblem, n=%" PetscInt_FMT "\n\n",n));
56
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.	70	PetscCall(MatCreate(PETSC_COMM_WORLD,&A));
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.	70	PetscCall(MatSetSizes(A,PETSC_DECIDE,PETSC_DECIDE,n,n));
59	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.	70	PetscCall(MatSetFromOptions(A));
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.	70	PetscCall(MatGetOwnershipRange(A,&Istart,&Iend));
61	7/8 ✓ Branch 0 taken 2 times. ✓ Branch 1 taken 8 times. ✓ Branch 2 taken 10 times. ✓ Branch 3 taken 8 times. ✗ Branch 4 not taken. ✓ Branch 5 taken 2 times. ✓ Branch 6 taken 2 times. ✓ Branch 7 taken 2 times.	2170	for (i=Istart;i<Iend;i++) PetscCall(MatSetValue(A,i,i,i+1,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.	70	PetscCall(MatAssemblyBegin(A,MAT_FINAL_ASSEMBLY));
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.	70	PetscCall(MatAssemblyEnd(A,MAT_FINAL_ASSEMBLY));
64
65			/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
66			Solve the eigensystem
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.	70	PetscCall(EPSCreate(PETSC_COMM_WORLD,&eps));
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.	70	PetscCall(EPSSetOperators(eps,A,NULL));
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.	70	PetscCall(EPSSetProblemType(eps,EPS_HEP));
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.	70	PetscCall(EPSSetTolerances(eps,tol,PETSC_CURRENT));
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.	70	PetscCall(EPSSetFromOptions(eps));
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.	70	PetscCall(EPSGetST(eps,&st));
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.	70	PetscCall(STGetKSP(st,&ksp));
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.	70	PetscCall(KSPGetPC(ksp,&pc));
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.	70	PetscCall(PCSetType(pc,PCSHELL));
77	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.	70	PetscCall(PCShellSetApply(pc,PCApply_User));
78	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.	70	PetscCall(EPSGetTarget(eps,&ctx.target));
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.	70	PetscCall(PCShellSetContext(pc,&ctx));
80
81			/* set random initial vector */
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.	70	PetscCall(MatCreateVecs(A,&v0,NULL));
83	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.	70	PetscCall(PetscRandomCreate(PETSC_COMM_WORLD,&rand));
84	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.	70	PetscCall(PetscRandomSetFromOptions(rand));
85	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.	70	PetscCall(PetscOptionsGetInt(NULL,NULL,"-seed",&seed,NULL));
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.	70	PetscCall(PetscRandomSetSeed(rand,seed));
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.	70	PetscCall(PetscRandomSeed(rand));
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.	70	PetscCall(VecSetRandom(v0,rand));
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.	70	PetscCall(EPSSetInitialSpace(eps,1,&v0));
90			/* call the solver */
91	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.	70	PetscCall(EPSSolve(eps));
92
93			/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
94			Display solution and clean up
95			- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
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.	70	PetscCall(EPSErrorView(eps,EPS_ERROR_RELATIVE,NULL));
97	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.	70	PetscCall(EPSDestroy(&eps));
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.	70	PetscCall(MatDestroy(&A));
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.	70	PetscCall(VecDestroy(&v0));
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.	70	PetscCall(PetscRandomDestroy(&rand));
101	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.	70	PetscCall(SlepcFinalize());
102			return 0;
103			}
104
105			/*TEST
106
107			testset:
108			args: -eps_nev 4 -eps_target 31
109			requires: !single
110			output_file: output/test12_1.out
111			test:
112			suffix: 1
113			args: -eps_type {{krylovschur subspace arnoldi power}} -st_type sinvert
114			test:
115			suffix: 1_gd
116			args: -eps_type {{gd jd}}
117			test:
118			suffix: 1_gd2
119			args: -eps_type gd -eps_gd_double_expansion
120
121			TEST*/
122

Function (Line)	Call count	Block coverage
PCApply_User (line 22)	called 8806 times	79.0%
main (line 38)	called 70 times	83.0%