---
name: "zqrt13.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/zqrt13.f"
---

# zqrt13.f(3)

## NAME

TESTING/LIN/zqrt13.f

## SYNOPSIS

### Functions/Subroutines

subroutine **zqrt13** (scale, m, n, a, lda, norma, iseed)\
 **ZQRT13**

## Function/Subroutine Documentation

### subroutine zqrt13 (integer scale, integer m, integer n, complex\*16, dimension( lda, \* ) a, integer lda, double precision norma, integer, dimension( 4 ) iseed)

**ZQRT13**

**Purpose:**

```
!>
!> ZQRT13 generates a full-rank matrix that may be scaled to have large
!> or small norm.
!>
```

**Parameters**

*SCALE*

```
!>          SCALE is INTEGER
!>          SCALE = 1: normally scaled matrix
!>          SCALE = 2: matrix scaled up
!>          SCALE = 3: matrix scaled down
!>
```

*M*

```
!>          M is INTEGER
!>          The number of rows of the matrix A.
!>
```

*N*

```
!>          N is INTEGER
!>          The number of columns of A.
!>
```

*A*

```
!>          A is COMPLEX*16 array, dimension (LDA,N)
!>          The M-by-N matrix A.
!>
```

*LDA*

```
!>          LDA is INTEGER
!>          The leading dimension of the array A.
!>
```

*NORMA*

```
!>          NORMA is DOUBLE PRECISION
!>          The one-norm of A.
!>
```

*ISEED*

```
!>          ISEED is integer array, dimension (4)
!>          Seed for random number generator
!>
```

**Author**

Univ. of Tennessee

Univ. of California Berkeley

Univ. of Colorado Denver

NAG Ltd.

Definition at line **90** of file **zqrt13.f**.

## Author

Generated automatically by Doxygen for LAPACK from the source code.