---
name: "dchkorhr_col"
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/dchkorhr_col.f"
---

# dchkorhr\_col(3)

Part of [dchkorhr\_col.f(3)](/dchkorhr_col.f/3.md).

## NAME

TESTING/LIN/dchkorhr\_col.f

## SYNOPSIS

### Functions/Subroutines

subroutine **dchkorhr\_col** (thresh, tsterr, nm, mval, nn, nval, nnb, nbval, nout)\
 **DCHKORHR\_COL**

## Function/Subroutine Documentation

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

**DCHKORHR\_COL**

**Purpose:**

```
!>
!> DCHKORHR_COL tests:
!>   1) DORGTSQR and DORHR_COL using DLATSQR, DGEMQRT,
!>   2) DORGTSQR_ROW and DORHR_COL inside DGETSQRHRT
!>      (which calls DLATSQR, DORGTSQR_ROW and DORHR_COL) using DGEMQRT.
!> Therefore, DLATSQR (part of DGEQR), DGEMQRT (part of DGEMQR)
!> have to be tested before this test.
!>
!>
```

**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 **106** of file **dchkorhr\_col.f**.

## Author

Generated automatically by Doxygen for LAPACK from the source code.