dckgsv.f - Man Page

TESTING/EIG/dckgsv.f

Synopsis

Functions/Subroutines

subroutine dckgsv (nm, mval, pval, nval, nmats, iseed, thresh, nmax, a, af, b, bf, u, v, q, alpha, beta, r, iwork, work, rwork, nin, nout, info)
DCKGSV

Function/Subroutine Documentation

subroutine dckgsv (integer nm, integer, dimension( * ) mval, integer, dimension( * ) pval, integer, dimension( * ) nval, integer nmats, integer, dimension( 4 ) iseed, double precision thresh, integer nmax, double precision, dimension( * ) a, double precision, dimension( * ) af, double precision, dimension( * ) b, double precision, dimension( * ) bf, double precision, dimension( * ) u, double precision, dimension( * ) v, double precision, dimension( * ) q, double precision, dimension( * ) alpha, double precision, dimension( * ) beta, double precision, dimension( * ) r, integer, dimension( * ) iwork, double precision, dimension( * ) work, double precision, dimension( * ) rwork, integer nin, integer nout, integer info)

DCKGSV

Purpose:

``` DCKGSV tests DGGSVD:
the GSVD for M-by-N matrix A and P-by-N matrix B.```
Parameters

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.```

PVAL

```          PVAL is INTEGER array, dimension (NP)
The values of the matrix row dimension P.```

NVAL

```          NVAL is INTEGER array, dimension (NN)
The values of the matrix column dimension N.```

NMATS

```          NMATS is INTEGER
The number of matrix types to be tested for each combination
of matrix dimensions.  If NMATS >= NTYPES (the maximum
number of matrix types), then all the different types are
generated for testing.  If NMATS < NTYPES, another input line
is read to get the numbers of the matrix types to be used.```

ISEED

```          ISEED is INTEGER array, dimension (4)
On entry, the seed of the random number generator.  The array
elements should be between 0 and 4095, otherwise they will be
reduced mod 4096, and ISEED(4) must be odd.
On exit, the next seed in the random number sequence after
all the test matrices have been generated.```

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.```

NMAX

```          NMAX is INTEGER
The maximum value permitted for M or N, used in dimensioning
the work arrays.```

A

`          A is DOUBLE PRECISION array, dimension (NMAX*NMAX)`

AF

`          AF is DOUBLE PRECISION array, dimension (NMAX*NMAX)`

B

`          B is DOUBLE PRECISION array, dimension (NMAX*NMAX)`

BF

`          BF is DOUBLE PRECISION array, dimension (NMAX*NMAX)`

U

`          U is DOUBLE PRECISION array, dimension (NMAX*NMAX)`

V

`          V is DOUBLE PRECISION array, dimension (NMAX*NMAX)`

Q

`          Q is DOUBLE PRECISION array, dimension (NMAX*NMAX)`

ALPHA

`          ALPHA is DOUBLE PRECISION array, dimension (NMAX)`

BETA

`          BETA is DOUBLE PRECISION array, dimension (NMAX)`

R

`          R is DOUBLE PRECISION array, dimension (NMAX*NMAX)`

IWORK

`          IWORK is INTEGER array, dimension (NMAX)`

WORK

`          WORK is DOUBLE PRECISION array, dimension (NMAX*NMAX)`

RWORK

`          RWORK is DOUBLE PRECISION array, dimension (NMAX)`

NIN

```          NIN is INTEGER
The unit number for input.```

NOUT

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

INFO

```          INFO is INTEGER
= 0 :  successful exit
> 0 :  If DLATMS returns an error code, the absolute value
of it is returned.```
Author

Univ. of Tennessee

Univ. of California Berkeley

NAG Ltd.

Definition at line 195 of file dckgsv.f.

Author

Generated automatically by Doxygen for LAPACK from the source code.

Referenced By

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

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