NAME

TESTING/LIN/sdrvgb.f

SYNOPSIS

Functions/Subroutines

subroutine sdrvgb (dotype, nn, nval, nrhs, thresh, tsterr, a, la, afb, lafb, asav, b, bsav, x, xact, s, work, rwork, iwork, nout)
SDRVGB

Function/Subroutine Documentation

subroutine sdrvgb (logical, dimension( * ) dotype, integer nn, integer, dimension( * ) nval, integer nrhs, real thresh, logical tsterr, real, dimension( * ) a, integer la, real, dimension( * ) afb, integer lafb, real, dimension( * ) asav, real, dimension( * ) b, real, dimension( * ) bsav, real, dimension( * ) x, real, dimension( * ) xact, real, dimension( * ) s, real, dimension( * ) work, real, dimension( * ) rwork, integer, dimension( * ) iwork, integer nout)

SDRVGB

Purpose:



 SDRVGB tests the driver routines SGBSV and -SVX.

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 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.

NRHS



          NRHS is INTEGER


          The number of right hand side vectors to be generated for


          each linear system.

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 >= (2*NMAX-1)*NMAX


          where NMAX is the largest entry in NVAL.

AFB



          AFB is REAL array, dimension (LAFB)

LAFB



          LAFB is INTEGER


          The length of the array AFB.  LAFB >= (3*NMAX-2)*NMAX


          where NMAX is the largest entry in NVAL.

ASAV



          ASAV is REAL array, dimension (LA)



          B is REAL array, dimension (NMAX*NRHS)

BSAV



          BSAV is REAL array, dimension (NMAX*NRHS)



          X is REAL array, dimension (NMAX*NRHS)

XACT



          XACT is REAL array, dimension (NMAX*NRHS)



          S is REAL array, dimension (2*NMAX)

WORK



          WORK is REAL array, dimension


                      (NMAX*max(3,NRHS,NMAX))

RWORK



          RWORK is REAL array, dimension


                      (NMAX+2*NRHS)

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 169 of file sdrvgb.f.

Author

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