---
name: "dchkqrt.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/dchkqrt.f"
---

# dchkqrt.f(3)

## NAME

TESTING/LIN/dchkqrt.f

## SYNOPSIS

### Functions/Subroutines

subroutine **dchkqrt** (thresh, tsterr, nm, mval, nn, nval, nnb, nbval, nout)\
 **DCHKQRT**

## Function/Subroutine Documentation

### subroutine dchkqrt (double precision thresh, logical tsterr, integer nm, integer, dimension( \* ) mval, integer nn, integer, dimension( \* ) nval, integer nnb, integer, dimension( \* ) nbval, integer nout)

**DCHKQRT**

**Purpose:**

```
!>
!> DCHKQRT tests DGEQRT and DGEMQRT.
!>
```

**Parameters**

*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.
!>
```

*TSTERR*

```
!>          TSTERR is LOGICAL
!>          Flag that indicates whether error exits are to be tested.
!>
```

*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.
!>
```

*NOUT*

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

**Author**

Univ. of Tennessee

Univ. of California Berkeley

Univ. of Colorado Denver

NAG Ltd.

Definition at line **100** of file **dchkqrt.f**.

## Author

Generated automatically by Doxygen for LAPACK from the source code.