ddrvls.f - Man Page

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

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.