---
name: "zchkps.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/zchkps.f"
---

# zchkps.f(3)

## NAME

TESTING/LIN/zchkps.f

## SYNOPSIS

### Functions/Subroutines

subroutine **zchkps** (dotype, nn, nval, nnb, nbval, nrank, rankval, thresh, tsterr, nmax, a, afac, perm, piv, work, rwork, nout)\
 **ZCHKPS**

## Function/Subroutine Documentation

### subroutine zchkps (logical, dimension( \* ) dotype, integer nn, integer, dimension( \* ) nval, integer nnb, integer, dimension( \* ) nbval, integer nrank, integer, dimension( \* ) rankval, double precision thresh, logical tsterr, integer nmax, complex\*16, dimension( \* ) a, complex\*16, dimension( \* ) afac, complex\*16, dimension( \* ) perm, integer, dimension( \* ) piv, complex\*16, dimension( \* ) work, double precision, dimension( \* ) rwork, integer nout)

**ZCHKPS**

**Purpose:**

```
!>
!> ZCHKPS tests ZPSTRF.
!>
```

**Parameters**

*DOTYPE*

```
!>          DOTYPE is LOGICAL array, dimension (NTYPES)
!>          The matrix types to be used for testing.  Matrices of type j
!>          (for 1 <= j <= NTYPES) are used for testing if DOTYPE(j) =
!>          .TRUE.; if DOTYPE(j) = .FALSE., then type j is not used.
!>
```

*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 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 block size NB.
!>
```

*NRANK*

```
!>          NRANK is INTEGER
!>          The number of values of RANK contained in the vector RANKVAL.
!>
```

*RANKVAL*

```
!>          RANKVAL is INTEGER array, dimension (NBVAL)
!>          The values of the block size NB.
!>
```

*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.
!>
```

*NMAX*

```
!>          NMAX is INTEGER
!>          The maximum value permitted for N, used in dimensioning the
!>          work arrays.
!>
```

*A*

```
!>          A is COMPLEX*16 array, dimension (NMAX*NMAX)
!>
```

*AFAC*

```
!>          AFAC is COMPLEX*16 array, dimension (NMAX*NMAX)
!>
```

*PERM*

```
!>          PERM is COMPLEX*16 array, dimension (NMAX*NMAX)
!>
```

*PIV*

```
!>          PIV is INTEGER array, dimension (NMAX)
!>
```

*WORK*

```
!>          WORK is COMPLEX*16 array, dimension (NMAX*3)
!>
```

*RWORK*

```
!>          RWORK is DOUBLE PRECISION array, dimension (NMAX)
!>
```

*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 **151** of file **zchkps.f**.

## Author

Generated automatically by Doxygen for LAPACK from the source code.