TESTING/LIN/ddrvls.f(3)

NAME
TESTING/LIN/ddrvls.f

SYNOPSIS

  Functions/Subroutines
subroutine ddrvls (dotype, nm, mval, nn, nval, nns, nsval, nnb, nbval, nxval, thresh, tsterr, a, copya, b, copyb, c, s, copys, nout)
DDRVLS

Function/Subroutine Documentation

  subroutine ddrvls (logical, dimension( * ) dotype, integer nm, integer, dimension( * ) mval, integer nn, integer, dimension( * ) nval, integer nns, integer, dimension( * ) nsval, integer nnb, integer, dimension( * ) nbval, integer, dimension( * ) nxval, double precision thresh, logical tsterr, double precision, dimension( * ) a, double precision, dimension( * ) copya, double precision, dimension( * ) b, double precision, dimension( * ) copyb, double precision, dimension( * ) c, double precision, dimension( * ) s, double precision, dimension( * ) copys, integer nout)

DDRVLS

Purpose:

     DDRVLS tests the least squares driver routines DGELS, DGELST,
     DGETSLS, DGELSS, DGELSY, and DGELSD.

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.
              The matrix of type j is generated as follows:
              j=1: A = U*D*V where U and V are random orthogonal matrices
                   and D has random entries (> 0.1) taken from a uniform
                   distribution (0,1). A is full rank.
              j=2: The same of 1, but A is scaled up.
              j=3: The same of 1, but A is scaled down.
              j=4: A = U*D*V where U and V are random orthogonal matrices
                   and D has 3*min(M,N)/4 random entries (> 0.1) taken
                   from a uniform distribution (0,1) and the remaining
                   entries set to 0. A is rank-deficient.
              j=5: The same of 4, but A is scaled up.
              j=6: The same of 5, but A is scaled down.

    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.

    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.

    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.

    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.

    A

              A is DOUBLE PRECISION array, dimension (MMAX*NMAX)
              where MMAX is the maximum value of M in MVAL and NMAX is the
              maximum value of N in NVAL.

    COPYA

              COPYA is DOUBLE PRECISION array, dimension (MMAX*NMAX)

    B

              B is DOUBLE PRECISION array, dimension (MMAX*NSMAX)
              where MMAX is the maximum value of M in MVAL and NSMAX is the
              maximum value of NRHS in NSVAL.

    COPYB

              COPYB is DOUBLE PRECISION array, dimension (MMAX*NSMAX)

    C

              C is DOUBLE PRECISION array, dimension (MMAX*NSMAX)

    S

              S is DOUBLE PRECISION array, dimension
                          (min(MMAX,NMAX))

    COPYS

              COPYS is DOUBLE PRECISION array, dimension
                          (min(MMAX,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 189 of file ddrvls.f.

Author

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