TESTING/LIN/dchkqr.f(3)

NAME
TESTING/LIN/dchkqr.f

SYNOPSIS

  Functions/Subroutines
subroutine dchkqr (dotype, nm, mval, nn, nval, nnb, nbval, nxval, nrhs, thresh, tsterr, nmax, a, af, aq, ar, ac, b, x, xact, tau, work, rwork, iwork, nout)
DCHKQR

Function/Subroutine Documentation

  subroutine dchkqr (logical, dimension( * ) dotype, integer nm, integer, dimension( * ) mval, integer nn, integer, dimension( * ) nval, integer nnb, integer, dimension( * ) nbval, integer, dimension( * ) nxval, integer nrhs, double precision thresh, logical tsterr, integer nmax, double precision, dimension( * ) a, double precision, dimension( * ) af, double precision, dimension( * ) aq, double precision, dimension( * ) ar, double precision, dimension( * ) ac, double precision, dimension( * ) b, double precision, dimension( * ) x, double precision, dimension( * ) xact, double precision, dimension( * ) tau, double precision, dimension( * ) work, double precision, dimension( * ) rwork, integer, dimension( * ) iwork, integer nout)

DCHKQR

Purpose:

     DCHKQR tests DGEQRF, DORGQR and DORMQR.

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

              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

              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 and NX contained in the
              vectors NBVAL and NXVAL.  The blocking parameters are used
              in pairs (NB,NX).

    NBVAL

              NBVAL is INTEGER array, dimension (NNB)
              The values of the blocksize NB.

    NXVAL

              NXVAL is INTEGER array, dimension (NNB)
              The values of the crossover point NX.

    NRHS

              NRHS is INTEGER
              The number of right hand side vectors to be generated for
              each linear system.

    THRESH

              THRESH is DOUBLE PRECISION
              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 maximum value permitted for M or N, used in dimensioning
              the work arrays.

    A

              A is DOUBLE PRECISION array, dimension (NMAX*NMAX)

    AF

              AF is DOUBLE PRECISION array, dimension (NMAX*NMAX)

    AQ

              AQ is DOUBLE PRECISION array, dimension (NMAX*NMAX)

    AR

              AR is DOUBLE PRECISION array, dimension (NMAX*NMAX)

    AC

              AC is DOUBLE PRECISION array, dimension (NMAX*NMAX)

    B

              B is DOUBLE PRECISION array, dimension (NMAX*NRHS)

    X

              X is DOUBLE PRECISION array, dimension (NMAX*NRHS)

    XACT

              XACT is DOUBLE PRECISION array, dimension (NMAX*NRHS)

    TAU

              TAU is DOUBLE PRECISION array, dimension (NMAX)

    WORK

              WORK is DOUBLE PRECISION array, dimension (NMAX*NMAX)

    RWORK

              RWORK is DOUBLE PRECISION array, dimension (NMAX)

    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 198 of file dchkqr.f.

Author

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