NAME

TESTING/LIN/schkgb.f

SYNOPSIS

Functions/Subroutines

subroutine schkgb (dotype, nm, mval, nn, nval, nnb, nbval, nns, nsval, thresh, tsterr, a, la, afac, lafac, b, x, xact, work, rwork, iwork, nout)
SCHKGB

Function/Subroutine Documentation

subroutine schkgb (logical, dimension( * ) dotype, integer nm, integer, dimension( * ) mval, integer nn, integer, dimension( * ) nval, integer nnb, integer, dimension( * ) nbval, integer nns, integer, dimension( * ) nsval, real thresh, logical tsterr, real, dimension( * ) a, integer la, real, dimension( * ) afac, integer lafac, real, dimension( * ) b, real, dimension( * ) x, real, dimension( * ) xact, real, dimension( * ) work, real, dimension( * ) rwork, integer, dimension( * ) iwork, integer nout)

SCHKGB

Purpose:



 SCHKGB tests SGBTRF, -TRS, -RFS, and -CON

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.



          NM is INTEGER


          The number of values of M contained in the vector MVAL.

MVAL



          MVAL is INTEGER array, dimension (NM)


          The values of the matrix row dimension M.



          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.

NNB



          NNB is INTEGER


          The number of values of NB contained in the vector NBVAL.

NBVAL



          NBVAL is INTEGER array, dimension (NNB)


          The values of the blocksize NB.

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.



          A is REAL array, dimension (LA)



          LA is INTEGER


          The length of the array A.  LA >= (KLMAX+KUMAX+1)*NMAX


          where KLMAX is the largest entry in the local array KLVAL,


                KUMAX is the largest entry in the local array KUVAL and


                NMAX is the largest entry in the input array NVAL.

AFAC



          AFAC is REAL array, dimension (LAFAC)

LAFAC



          LAFAC is INTEGER


          The length of the array AFAC. LAFAC >= (2*KLMAX+KUMAX+1)*NMAX


          where KLMAX is the largest entry in the local array KLVAL,


                KUMAX is the largest entry in the local array KUVAL and


                NMAX is the largest entry in the input array NVAL.



          B is REAL array, dimension (NMAX*NSMAX)


          where NSMAX is the largest entry in NSVAL.



          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,NMAX))

RWORK



          RWORK is REAL array, dimension


                      (NMAX+2*NSMAX)

IWORK



          IWORK is INTEGER array, dimension (2*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 188 of file schkgb.f.

Author

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