# isPersymmetricMatrix
> Test if a value is a [persymmetric matrix][persymmetric-matrix].
## Usage
```javascript
var isPersymmetricMatrix = require( '@stdlib/assert/is-persymmetric-matrix' );
```
#### isPersymmetricMatrix( value )
Tests if a value is a [persymmetric matrix][persymmetric-matrix].
```javascript
var ndarray = require( '@stdlib/ndarray/ctor' );
var arr = ndarray( 'generic', [ 1, 2, 3, 1 ], [ 2, 2 ], [ 2, 1 ], 0, 'row-major' );
var bool = isPersymmetricMatrix( arr );
// returns true
```
## Examples
```javascript
var ndarray = require( '@stdlib/ndarray/ctor' );
var isPersymmetricMatrix = require( '@stdlib/assert/is-persymmetric-matrix' );
var arr = ndarray( 'generic', [ 1, 2, 3, 1 ], [ 2, 2 ], [ 2, 1 ], 0, 'row-major' );
var out = isPersymmetricMatrix( arr );
// returns true
out = isPersymmetricMatrix( [ 1, 2, 3, 4 ] );
// returns false
out = isPersymmetricMatrix( {} );
// returns false
out = isPersymmetricMatrix( null );
// returns false
```
[persymmetric-matrix]: https://en.wikipedia.org/wiki/Persymmetric_matrix