# zchktb.f - Man Page

TESTING/LIN/zchktb.f

## Synopsis

### Functions/Subroutines

subroutine zchktb (dotype, nn, nval, nns, nsval, thresh, tsterr, nmax, ab, ainv, b, x, xact, work, rwork, nout)
ZCHKTB

## Function/Subroutine Documentation

### subroutine zchktb (logical, dimension( * ) dotype, integer nn, integer, dimension( * ) nval, integer nns, integer, dimension( * ) nsval, double precision thresh, logical tsterr, integer nmax, complex*16, dimension( * ) ab, complex*16, dimension( * ) ainv, complex*16, dimension( * ) b, complex*16, dimension( * ) x, complex*16, dimension( * ) xact, complex*16, dimension( * ) work, double precision, dimension( * ) rwork, integer nout)

ZCHKTB

Purpose:

` ZCHKTB tests ZTBTRS, -RFS, and -CON, and ZLATBS.`
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

```          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.```

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 leading dimension of the work arrays.
NMAX >= the maximum value of N in NVAL.```

AB

`          AB is COMPLEX*16 array, dimension (NMAX*NMAX)`

AINV

`          AINV is COMPLEX*16 array, dimension (NMAX*NMAX)`

B

```          B is COMPLEX*16 array, dimension (NMAX*NSMAX)
where NSMAX is the largest entry in NSVAL.```

X

`          X is COMPLEX*16 array, dimension (NMAX*NSMAX)`

XACT

`          XACT is COMPLEX*16 array, dimension (NMAX*NSMAX)`

WORK

```          WORK is COMPLEX*16 array, dimension
(NMAX*max(3,NSMAX))```

RWORK

```          RWORK is DOUBLE PRECISION array, dimension
(max(NMAX,2*NSMAX))```

NOUT

```          NOUT is INTEGER
The unit number for output.```
Author

Univ. of Tennessee

Univ. of California Berkeley

NAG Ltd.

Definition at line 147 of file zchktb.f.

## Author

Generated automatically by Doxygen for LAPACK from the source code.

## Referenced By

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

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