schktb.f - Man Page

subroutine schktb (dotype, nn, nval, nns, nsval, thresh, tsterr, nmax, ab, ainv, b, x, xact, work, rwork, iwork, nout)
SCHKTB

SCHKTB

Purpose:

 SCHKTB tests STBTRS, -RFS, and -CON, and SLATBS.

Parameters

DOTYPE

          DOTYPE is LOGICAL array, dimension (NTYPES)
          The matrix types to be used for testing.  Matrices of type j
          (for 1 <= j <= NTYPES) are used for testing if DOTYPE(j) =
          .TRUE.; if DOTYPE(j) = .FALSE., then type j is not used.

NN

          NN is INTEGER
          The number of values of N contained in the vector NVAL.

NVAL

          NVAL is INTEGER array, dimension (NN)
          The values of the matrix column dimension N.

NNS

          NNS is INTEGER
          The number of values of NRHS contained in the vector NSVAL.

NSVAL

          NSVAL is INTEGER array, dimension (NNS)
          The values of the number of right hand sides NRHS.

THRESH

          THRESH is REAL
          The threshold value for the test ratios.  A result is
          included in the output file if RESULT >= THRESH.  To have
          every test ratio printed, use THRESH = 0.

TSTERR

          TSTERR is LOGICAL
          Flag that indicates whether error exits are to be tested.

NMAX

          NMAX is INTEGER
          The leading dimension of the work arrays.
          NMAX >= the maximum value of N in NVAL.

AB

          AB is REAL array, dimension (NMAX*NMAX)

AINV

          AINV is REAL array, dimension (NMAX*NMAX)

B

          B is REAL array, dimension (NMAX*NSMAX)
          where NSMAX is the largest entry in NSVAL.

X

          X is REAL array, dimension (NMAX*NSMAX)

XACT

          XACT is REAL array, dimension (NMAX*NSMAX)

WORK

          WORK is REAL array, dimension
                      (NMAX*max(3,NSMAX))

RWORK

          RWORK is REAL array, dimension
                      (max(NMAX,2*NSMAX))

IWORK

          IWORK is INTEGER array, dimension (NMAX)

NOUT

          NOUT is INTEGER
          The unit number for output.

Author

Univ. of Tennessee

Univ. of California Berkeley

Univ. of Colorado Denver

NAG Ltd.

Definition at line 152 of file schktb.f.