DCHKAB is the test program for the DOUBLE PRECISION LAPACK


 DSGESV/DSPOSV routine


 The program must be driven by a short data file. The first 5 records


 specify problem dimensions and program options using list-directed


 input. The remaining lines specify the LAPACK test paths and the


 number of matrix types to use in testing.  An annotated example of a


 data file can be obtained by deleting the first 3 characters from the


 following 10 lines:


 Data file for testing DOUBLE PRECISION LAPACK DSGESV


 7                      Number of values of M


 0 1 2 3 5 10 16        Values of M (row dimension)


 1                      Number of values of NRHS


 2                      Values of NRHS (number of right hand sides)


 20.0                   Threshold value of test ratio


 T                      Put T to test the LAPACK routines


 T                      Put T to test the error exits


 DGE    11              List types on next line if 0 < NTYPES < 11


 DPO    9               List types on next line if 0 < NTYPES <  9

  NMAX    INTEGER


          The maximum allowable value for N


  MAXIN   INTEGER


          The number of different values that can be used for each of


          M, N, NRHS, NB, and NX


  MAXRHS  INTEGER


          The maximum number of right hand sides


  NIN     INTEGER


          The unit number for input


  NOUT    INTEGER


          The unit number for output

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