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Input File for Testing the Banded Singular Value Decomposition Routines

An annotated example of an input file for testing the banded singular value decomposition routines is shown below.

SBB:  Data file for testing banded Singular Value Decomposition routines
20                                Number of values of M
0 0 0 0 1 1 1 1 2 2 2 2 3 3 3 3 10  10  16  16    Values of M
0 1 2 3 0 1 2 3 0 1 2 3 0 1 2 3 10  16  10  16    Values of N
5                                 Number of values of K
0 1 2 3 16                        Values of K (band width)
2                                 Number of values of NRHS
1 2                               Values of NRHS
20.0                              Threshold value
F                                 Put T to test the error exits
1                                 Code to interpret the seed
SBB 15

The first line of the input file must contain the characters SBB in columns 1-3. Lines 2-12 are read using list-directed input and specify the following values:

line 2: The number of values of M and N
line 3: The values of M, the matrix row dimension
line 4: The values of N, the matrix column dimension
line 5: The number of values of K
line 6: The values of K, the bandwidth
line 7: The number of values of NRHS
line 8: The values of NRHS, the number of right hand sides
line 9: The threshold value for the test ratios
line 10: TSTERR, the flag to test error exits
line 11: An integer code to interpret the random number seed.
  = 0: Set the seed to a default value before each run
  = 1: Initialize the seed to a default value only before the first run
  = 2: Like 1, but use the seed values on the next line
line 12: If line 14 was 2, four integer values for the random number seed
   

The remaining lines are used to specify the matrix types for the set of tests. The valid 3-character code is SBB (CBB in complex, DBB in double precision, and ZBB in complex*16).


next up previous contents
Next: Testing the Generalized Singular Up: Testing the Singular Value Previous: Input File for Testing   Contents
Susan Blackford 2001-08-13