---
name: "zlctsx.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/zlctsx.f"
---

# zlctsx.f(3)

## NAME

TESTING/EIG/zlctsx.f

## SYNOPSIS

### Functions/Subroutines

logical function **zlctsx** (alpha, beta)\
 **ZLCTSX**

## Function/Subroutine Documentation

### logical function zlctsx (complex\*16 alpha, complex\*16 beta)

**ZLCTSX**

**Purpose:**

```
!>
!> This function is used to determine what eigenvalues will be
!> selected.  If this is part of the test driver ZDRGSX, do not
!> change the code UNLESS you are testing input examples and not
!> using the built-in examples.
!>
```

**Parameters**

*ALPHA*

```
!>          ALPHA is COMPLEX*16
!>
```

*BETA*

```
!>          BETA is COMPLEX*16
!>
!>          parameters to decide whether the pair (ALPHA, BETA) is
!>          selected.
!>
```

**Author**

Univ. of Tennessee

Univ. of California Berkeley

Univ. of Colorado Denver

NAG Ltd.

Definition at line **56** of file **zlctsx.f**.

## Author

Generated automatically by Doxygen for LAPACK from the source code.