# zdrvls.f - Man Page

TESTING/LIN/zdrvls.f

## Synopsis

### Functions/Subroutines

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

## Function/Subroutine Documentation

### subroutine zdrvls (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, complex*16, dimension( * ) a, complex*16, dimension( * ) copya, complex*16, dimension( * ) b, complex*16, dimension( * ) copyb, complex*16, dimension( * ) c, double precision, dimension( * ) s, double precision, dimension( * ) copys, integer nout)

ZDRVLS

Purpose:

``` ZDRVLS tests the least squares driver routines ZGELS, ZGELST,
ZGETSLS, ZGELSS, ZGELSY and ZGELSD.```
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 unitary 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 unitary 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.```

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.```

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 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 COMPLEX*16 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 COMPLEX*16 array, dimension (MMAX*NMAX)`

B

```          B is COMPLEX*16 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 COMPLEX*16 array, dimension (MMAX*NSMAX)`

C

`          C is COMPLEX*16 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

NAG Ltd.

Definition at line 189 of file zdrvls.f.

## Author

Generated automatically by Doxygen for LAPACK from the source code.

## Referenced By

The man page zdrvls(3) is an alias of zdrvls.f(3).

Tue Nov 28 2023 12:08:43 Version 3.12.0 LAPACK