---
name: "dget34.f"
section: "3"
platform: "linux"
package: "lapack-doc"
version: "3.12.1-2"
release: "Arch Linux 2026-11-01"
platforms: ["linux"]
url: "https://new.carta.tech/dget34.f"
---

# dget34.f(3)

## NAME

TESTING/EIG/dget34.f

## SYNOPSIS

### Functions/Subroutines

subroutine **dget34** (rmax, lmax, ninfo, knt)\
 **DGET34**

## Function/Subroutine Documentation

### subroutine dget34 (double precision rmax, integer lmax, integer, dimension( 2 ) ninfo, integer knt)

**DGET34**

**Purpose:**

```
!>
!> DGET34 tests DLAEXC, a routine for swapping adjacent blocks (either
!> 1 by 1 or 2 by 2) on the diagonal of a matrix in real Schur form.
!> Thus, DLAEXC computes an orthogonal matrix Q such that
!>
!>     Q' * [ A B ] * Q  = [ C1 B1 ]
!>          [ 0 C ]        [ 0  A1 ]
!>
!> where C1 is similar to C and A1 is similar to A.  Both A and C are
!> assumed to be in standard form (equal diagonal entries and
!> offdiagonal with differing signs) and A1 and C1 are returned with the
!> same properties.
!>
!> The test code verifies these last assertions, as well as that
!> the residual in the above equation is small.
!>
```

**Parameters**

*RMAX*

```
!>          RMAX is DOUBLE PRECISION
!>          Value of the largest test ratio.
!>
```

*LMAX*

```
!>          LMAX is INTEGER
!>          Example number where largest test ratio achieved.
!>
```

*NINFO*

```
!>          NINFO is INTEGER array, dimension (2)
!>          NINFO(J) is the number of examples where INFO=J occurred.
!>
```

*KNT*

```
!>          KNT is INTEGER
!>          Total number of examples tested.
!>
```

**Author**

Univ. of Tennessee

Univ. of California Berkeley

Univ. of Colorado Denver

NAG Ltd.

Definition at line **81** of file **dget34.f**.

## Author

Generated automatically by Doxygen for LAPACK from the source code.