An annotated example of an input file for testing the symmetric eigenvalue routines and drivers is shown below.

SSB: Data file for testing Symmetric Eigenvalue Problem routines 2 Number of values of N 5 20 Values of N (dimension) 5 Number of values of K 0 1 2 5 16 Values of K (band width) 20.0 Threshold value T Put T to test the error exits 1 Code to interpret the seed SSB 15

The first line of the input file
must contain the characters `SEP` 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 N |

line 3: | The values of N, the matrix dimension |

line 4: | The number of values of K |

line 5: | The values of K |

line 6: | The threshold value for the test ratios |

line 7: | TSTERR, flag to test error exits from LAPACK and driver routines |

line 8: | 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 9: | If line 12 was 2, four integer values for the random number seed |

The remaining lines are used to specify the matrix types for one
or more sets of tests.
The valid 3-character code is `SSB` (`CSB`
in complex, `DSB` in double precision, and `ZSB` in
complex*16).