GCC Code Coverage Report

Directory:	./
File:	src/svd/tests/test18.c
Date:	2025-10-04 04:19:13

	Exec	Total	Coverage
Lines:	53	53	100.0%
Functions:	1	1	100.0%
Branches:	178	262	67.9%

  
      Line
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      Exec
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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[] = "Test GSVD with user-provided initial vectors.\n\n"
    
        "The command line options are:\n"
    
        "  -m <m>, where <m> = number of rows of A.\n"
    
        "  -n <n>, where <n> = number of columns of A.\n"
    
        "  -p <p>, where <p> = number of rows of B.\n\n";
    
      #include <slepcsvd.h>
    
      /*
    
         This example solves a GSVD problem for the bidiagonal matrices
    
                    |  1  2                     |       |  2                        |
    
                    |     1  2                  |       | -1  2                     |
    
                    |        1  2               |       |    -1  2                  |
    
                A = |          .  .             |   B = |       .  .                |
    
                    |             .  .          |       |          .  .             |
    
                    |                1  2       |       |            -1  2          |
    
                    |                   1  2    |       |               -1  2       |
    
       */
    
      70
      int main(int argc,char **argv)
    
      {
    
      70
        Mat            A,B;
    
      70
        SVD            svd;
    
      70
        Vec            v0,w0;           /* initial vectors */
    
      70
        VecType        vtype;
    
      70
        PetscInt       m=22,n=20,p=22,Istart,Iend,i,col[2];
    
      70
        PetscScalar    valsa[] = { 1, 2 }, valsb[] = { -1, 2 };
    
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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,"-m",&m,NULL));
    
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      70
        PetscCall(PetscOptionsGetInt(NULL,NULL,"-n",&n,NULL));
    
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      70
        PetscCall(PetscOptionsGetInt(NULL,NULL,"-p",&p,NULL));
    
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      70
        PetscCall(PetscPrintf(PETSC_COMM_WORLD,"\nGeneralized singular value decomposition, (%" PetscInt_FMT "+%" PetscInt_FMT ")x%" PetscInt_FMT "\n\n",m,p,n));
    
        /* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
    
                           Generate the matrices
    
           - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
    
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      70
        PetscCall(MatCreate(PETSC_COMM_WORLD,&A));
    
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      70
        PetscCall(MatSetSizes(A,PETSC_DECIDE,PETSC_DECIDE,m,n));
    
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      70
        PetscCall(MatSetFromOptions(A));
    
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      70
        PetscCall(MatGetOwnershipRange(A,&Istart,&Iend));
    
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      1610
        for (i=Istart;i<Iend;i++) {
    
      1540
          col[0]=i; col[1]=i+1;
    
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      1540
          if (i<n-1) PetscCall(MatSetValues(A,1,&i,2,col,valsa,INSERT_VALUES));
    
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      1540
          else if (i==n-1) PetscCall(MatSetValue(A,i,col[0],valsa[0],INSERT_VALUES));
    
        }
    
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      70
        PetscCall(MatAssemblyBegin(A,MAT_FINAL_ASSEMBLY));
    
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      70
        PetscCall(MatAssemblyEnd(A,MAT_FINAL_ASSEMBLY));
    
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      70
        PetscCall(MatCreate(PETSC_COMM_WORLD,&B));
    
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      70
        PetscCall(MatSetSizes(B,PETSC_DECIDE,PETSC_DECIDE,m,n));
    
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      70
        PetscCall(MatSetFromOptions(B));
    
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      70
        PetscCall(MatGetOwnershipRange(B,&Istart,&Iend));
    
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      1610
        for (i=Istart;i<Iend;i++) {
    
      1540
          col[0]=i-1; col[1]=i;
    
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      1540
          if (i==0) PetscCall(MatSetValue(B,i,col[1],valsb[1],INSERT_VALUES));
    
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      1470
          else if (i<n) PetscCall(MatSetValues(B,1,&i,2,col,valsb,INSERT_VALUES));
    
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      1540
          else if (i==n) PetscCall(MatSetValue(B,i,col[0],valsb[0],INSERT_VALUES));
    
        }
    
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      70
        PetscCall(MatAssemblyBegin(B,MAT_FINAL_ASSEMBLY));
    
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      70
        PetscCall(MatAssemblyEnd(B,MAT_FINAL_ASSEMBLY));
    
        /* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
    
               Create the singular value solver, set options and solve
    
           - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
    
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      70
        PetscCall(SVDCreate(PETSC_COMM_WORLD,&svd));
    
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      70
        PetscCall(SVDSetOperators(svd,A,B));
    
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      70
        PetscCall(SVDSetFromOptions(svd));
    
        /*
    
           Set the initial vectors. This is optional, if not done the initial
    
           vectors are set to random values
    
        */
    
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      70
        PetscCall(MatCreateVecs(A,&v0,NULL));        /* right initial vector, length n */
    
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      70
        PetscCall(VecCreate(PETSC_COMM_WORLD,&w0));  /* left initial vector, length m+p */
    
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      70
        PetscCall(VecSetSizes(w0,PETSC_DECIDE,m+p));
    
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      70
        PetscCall(VecGetType(v0,&vtype));
    
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      70
        PetscCall(VecSetType(w0,vtype));
    
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      70
        PetscCall(VecSet(v0,1.0));
    
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      70
        PetscCall(VecSet(w0,1.0));
    
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      70
        PetscCall(SVDSetInitialSpaces(svd,1,&v0,1,&w0));
    
        /*
    
           Compute solution
    
        */
    
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      70
        PetscCall(SVDSolve(svd));
    
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      70
        PetscCall(SVDErrorView(svd,SVD_ERROR_NORM,NULL));
    
        /* Free work space */
    
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      70
        PetscCall(VecDestroy(&v0));
    
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      70
        PetscCall(VecDestroy(&w0));
    
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      70
        PetscCall(SVDDestroy(&svd));
    
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      70
        PetscCall(MatDestroy(&A));
    
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      70
        PetscCall(MatDestroy(&B));
    
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      70
        PetscCall(SlepcFinalize());
    
        return 0;
    
      }
    
      /*TEST
    
         testset:
    
            args: -svd_nsv 3
    
            requires: !single
    
            output_file: output/test18_1.out
    
            test:
    
               suffix: 1
    
               args: -svd_type {{lapack cross cyclic}}
    
            test:
    
               suffix: 1_trlanczos
    
               args: -svd_type trlanczos -svd_trlanczos_gbidiag {{single upper lower}}
    
               requires: !__float128
    
         test:
    
            suffix: 2
    
            args: -svd_nsv 3 -svd_type trlanczos -svd_monitor_conditioning
    
            requires: double
    
      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 GSVD with user-provided initial vectors.\n\n"
12			"The command line options are:\n"
13			" -m <m>, where <m> = number of rows of A.\n"
14			" -n <n>, where <n> = number of columns of A.\n"
15			" -p <p>, where <p> = number of rows of B.\n\n";
16
17			#include <slepcsvd.h>
18
19			/*
20			This example solves a GSVD problem for the bidiagonal matrices
21
22			\| 1 2 \| \| 2 \|
23			\| 1 2 \| \| -1 2 \|
24			\| 1 2 \| \| -1 2 \|
25			A = \| . . \| B = \| . . \|
26			\| . . \| \| . . \|
27			\| 1 2 \| \| -1 2 \|
28			\| 1 2 \| \| -1 2 \|
29			*/
30
31		70	int main(int argc,char **argv)
32			{
33		70	Mat A,B;
34		70	SVD svd;
35		70	Vec v0,w0; /* initial vectors */
36		70	VecType vtype;
37		70	PetscInt m=22,n=20,p=22,Istart,Iend,i,col[2];
38		70	PetscScalar valsa[] = { 1, 2 }, valsb[] = { -1, 2 };
39
40	1/2 ✓ Branch 0 taken 2 times. ✗ Branch 1 not taken.	70	PetscFunctionBeginUser;
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.	70	PetscCall(SlepcInitialize(&argc,&argv,NULL,help));
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.	70	PetscCall(PetscOptionsGetInt(NULL,NULL,"-m",&m,NULL));
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.	70	PetscCall(PetscOptionsGetInt(NULL,NULL,"-n",&n,NULL));
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.	70	PetscCall(PetscOptionsGetInt(NULL,NULL,"-p",&p,NULL));
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.	70	PetscCall(PetscPrintf(PETSC_COMM_WORLD,"\nGeneralized singular value decomposition, (%" PetscInt_FMT "+%" PetscInt_FMT ")x%" PetscInt_FMT "\n\n",m,p,n));
46
47			/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
48			Generate the matrices
49			- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
50
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.	70	PetscCall(MatCreate(PETSC_COMM_WORLD,&A));
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(MatSetSizes(A,PETSC_DECIDE,PETSC_DECIDE,m,n));
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.	70	PetscCall(MatSetFromOptions(A));
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(MatGetOwnershipRange(A,&Istart,&Iend));
55	2/2 ✓ Branch 0 taken 10 times. ✓ Branch 1 taken 10 times.	1610	for (i=Istart;i<Iend;i++) {
56		1540	col[0]=i; col[1]=i+1;
57	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.	1540	if (i<n-1) PetscCall(MatSetValues(A,1,&i,2,col,valsa,INSERT_VALUES));
58	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.	1540	else if (i==n-1) PetscCall(MatSetValue(A,i,col[0],valsa[0],INSERT_VALUES));
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.	70	PetscCall(MatAssemblyBegin(A,MAT_FINAL_ASSEMBLY));
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.	70	PetscCall(MatAssemblyEnd(A,MAT_FINAL_ASSEMBLY));
62
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(MatCreate(PETSC_COMM_WORLD,&B));
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.	70	PetscCall(MatSetSizes(B,PETSC_DECIDE,PETSC_DECIDE,m,n));
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.	70	PetscCall(MatSetFromOptions(B));
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.	70	PetscCall(MatGetOwnershipRange(B,&Istart,&Iend));
67	2/2 ✓ Branch 0 taken 10 times. ✓ Branch 1 taken 10 times.	1610	for (i=Istart;i<Iend;i++) {
68		1540	col[0]=i-1; col[1]=i;
69	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.	1540	if (i==0) PetscCall(MatSetValue(B,i,col[1],valsb[1],INSERT_VALUES));
70	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.	1470	else if (i<n) PetscCall(MatSetValues(B,1,&i,2,col,valsb,INSERT_VALUES));
71	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.	1540	else if (i==n) PetscCall(MatSetValue(B,i,col[0],valsb[0],INSERT_VALUES));
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.	70	PetscCall(MatAssemblyBegin(B,MAT_FINAL_ASSEMBLY));
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(MatAssemblyEnd(B,MAT_FINAL_ASSEMBLY));
75
76			/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
77			Create the singular value solver, set options and solve
78			- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
79
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.	70	PetscCall(SVDCreate(PETSC_COMM_WORLD,&svd));
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.	70	PetscCall(SVDSetOperators(svd,A,B));
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(SVDSetFromOptions(svd));
83
84			/*
85			Set the initial vectors. This is optional, if not done the initial
86			vectors are set to random 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.	70	PetscCall(MatCreateVecs(A,&v0,NULL)); /* right initial vector, length n */
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(VecCreate(PETSC_COMM_WORLD,&w0)); /* left initial vector, length m+p */
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.	70	PetscCall(VecSetSizes(w0,PETSC_DECIDE,m+p));
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(VecGetType(v0,&vtype));
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.	70	PetscCall(VecSetType(w0,vtype));
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.	70	PetscCall(VecSet(v0,1.0));
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.	70	PetscCall(VecSet(w0,1.0));
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.	70	PetscCall(SVDSetInitialSpaces(svd,1,&v0,1,&w0));
96
97			/*
98			Compute solution
99			*/
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(SVDSolve(svd));
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.	70	PetscCall(SVDErrorView(svd,SVD_ERROR_NORM,NULL));
102
103			/* Free work space */
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.	70	PetscCall(VecDestroy(&v0));
105	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(&w0));
106	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(SVDDestroy(&svd));
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.	70	PetscCall(MatDestroy(&A));
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.	70	PetscCall(MatDestroy(&B));
109	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());
110			return 0;
111			}
112
113			/*TEST
114
115			testset:
116			args: -svd_nsv 3
117			requires: !single
118			output_file: output/test18_1.out
119			test:
120			suffix: 1
121			args: -svd_type {{lapack cross cyclic}}
122			test:
123			suffix: 1_trlanczos
124			args: -svd_type trlanczos -svd_trlanczos_gbidiag {{single upper lower}}
125			requires: !__float128
126
127			test:
128			suffix: 2
129			args: -svd_nsv 3 -svd_type trlanczos -svd_monitor_conditioning
130			requires: double
131
132			TEST*/
133