# cchkgb.f - Man Page

TESTING/LIN/cchkgb.f

## Synopsis

### Functions/Subroutines

subroutine cchkgb (dotype, nm, mval, nn, nval, nnb, nbval, nns, nsval, thresh, tsterr, a, la, afac, lafac, b, x, xact, work, rwork, iwork, nout)
CCHKGB

## Function/Subroutine Documentation

### subroutine cchkgb (logical, dimension( * ) dotype, integer nm, integer, dimension( * ) mval, integer nn, integer, dimension( * ) nval, integer nnb, integer, dimension( * ) nbval, integer nns, integer, dimension( * ) nsval, real thresh, logical tsterr, complex, dimension( * ) a, integer la, complex, dimension( * ) afac, integer lafac, complex, dimension( * ) b, complex, dimension( * ) x, complex, dimension( * ) xact, complex, dimension( * ) work, real, dimension( * ) rwork, integer, dimension( * ) iwork, integer nout)

CCHKGB

Purpose:

` CCHKGB tests CGBTRF, -TRS, -RFS, and -CON`
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 contained in the vector NBVAL.```

NBVAL

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

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 REAL
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 array, dimension (LA)`

LA

```          LA is INTEGER
The length of the array A.  LA >= (KLMAX+KUMAX+1)*NMAX
where KLMAX is the largest entry in the local array KLVAL,
KUMAX is the largest entry in the local array KUVAL and
NMAX is the largest entry in the input array NVAL.```

AFAC

`          AFAC is COMPLEX array, dimension (LAFAC)`

LAFAC

```          LAFAC is INTEGER
The length of the array AFAC. LAFAC >= (2*KLMAX+KUMAX+1)*NMAX
where KLMAX is the largest entry in the local array KLVAL,
KUMAX is the largest entry in the local array KUVAL and
NMAX is the largest entry in the input array NVAL.```

B

`          B is COMPLEX array, dimension (NMAX*NSMAX)`

X

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

XACT

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

WORK

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

RWORK

```          RWORK is REAL array, dimension
(NMAX+2*NSMAX)```

IWORK

`          IWORK is INTEGER array, dimension (NMAX)`

NOUT

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

Univ. of Tennessee

Univ. of California Berkeley

NAG Ltd.

Definition at line 188 of file cchkgb.f.

## Author

Generated automatically by Doxygen for LAPACK from the source code.

## Referenced By

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

Tue Nov 28 2023 12:08:42 Version 3.12.0 LAPACK