GCC Code Coverage Report


Directory: ./
File: src/svd/tests/test20.c
Date: 2025-10-04 04:19:13
Exec Total Coverage
Lines: 42 42 100.0%
Functions: 1 1 100.0%
Branches: 140 208 67.3%

Line Branch Exec Source
1 /*
2 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
3 SLEPc - Scalable Library for Eigenvalue Problem Computations
4 Copyright (c) 2002-, Universitat Politecnica de Valencia, Spain
5
6 This file is part of SLEPc.
7 SLEPc is distributed under a 2-clause BSD license (see LICENSE).
8 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
9 */
10
11 static char help[] = "Test setting and getting the signature in HSVD.\n\n"
12 "Based on ex15.c. The command line options are:\n"
13 " -n <n>, where <n> = matrix dimension.\n"
14 " -mu <mu>, where <mu> = subdiagonal value.\n\n";
15
16 #include <slepcsvd.h>
17
18 10 int main(int argc,char **argv)
19 {
20 10 Mat A; /* operator matrix */
21 10 Vec omega,v; /* signature */
22 10 SVD svd; /* singular value problem solver context */
23 10 PetscReal mu=PETSC_SQRT_MACHINE_EPSILON;
24 10 PetscInt n=50,i,j,Istart,Iend;
25
26
1/2
✓ Branch 0 taken 2 times.
✗ Branch 1 not taken.
10 PetscFunctionBeginUser;
27
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));
28
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.
10 PetscCall(PetscOptionsGetInt(NULL,NULL,"-n",&n,NULL));
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.
10 PetscCall(PetscOptionsGetReal(NULL,NULL,"-mu",&mu,NULL));
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.
10 PetscCall(PetscPrintf(PETSC_COMM_WORLD,"\nLauchli hyperbolic singular value decomposition, (%" PetscInt_FMT " x %" PetscInt_FMT ") mu=%g\n\n",n+1,n,(double)mu));
32
33 /* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
34 Build Lauchli matrix and signature
35 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
36
37
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));
38
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+1,n));
39
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));
40
41
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));
42
2/2
✓ Branch 0 taken 10 times.
✓ Branch 1 taken 10 times.
520 for (i=Istart;i<Iend;i++) {
43
2/2
✓ Branch 0 taken 10 times.
✓ Branch 1 taken 10 times.
510 if (i == 0) {
44
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.
510 for (j=0;j<n;j++) PetscCall(MatSetValue(A,0,j,1.0,INSERT_VALUES));
45
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.
510 } else PetscCall(MatSetValue(A,i,i-1,mu,INSERT_VALUES));
46 }
47
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));
48
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));
49
50 /* signature omega = [ -1 1 1 ... 1 ] */
51
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(MatCreateVecs(A,NULL,&omega));
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.
10 PetscCall(VecSet(omega,1.0));
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.
10 PetscCall(VecGetOwnershipRange(omega,&Istart,NULL));
54
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 if (Istart==0) PetscCall(VecSetValue(omega,0,-1.0,INSERT_VALUES));
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.
10 PetscCall(VecAssemblyBegin(omega));
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.
10 PetscCall(VecAssemblyEnd(omega));
57
58 /* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
59 Create the singular value solver and set various options
60 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
61
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(SVDCreate(PETSC_COMM_WORLD,&svd));
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(SVDSetSignature(svd,omega));
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(SVDSetOperators(svd,A,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(SVDSetType(svd,SVDTRLANCZOS));
66
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(SVDSetFromOptions(svd));
67
68 /* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
69 Solve the problem and display solution
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(SVDSolve(svd));
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.
10 PetscCall(SVDErrorView(svd,SVD_ERROR_RELATIVE,PETSC_VIEWER_STDOUT_WORLD));
74
75 /* Test getting the signature */
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(MatCreateVecs(A,NULL,&v));
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.
10 PetscCall(SVDGetSignature(svd,v));
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.
10 PetscCall(VecView(v,NULL));
79
80 /* Free work space */
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(SVDDestroy(&svd));
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(MatDestroy(&A));
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.
10 PetscCall(VecDestroy(&omega));
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.
10 PetscCall(VecDestroy(&v));
85
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());
86 return 0;
87 }
88
89 /*TEST
90
91 test:
92 requires: double
93 suffix: 1
94
95 TEST*/
96