# Assert
> Base BLAS assertion utilities.
## Usage
```javascript
var ns = require( '@stdlib/blas/base/assert' );
```
#### ns
Base BLAS assertion utilities.
```javascript
var o = ns;
// returns {...}
```
- [`isDiagonalType( value )`][@stdlib/blas/base/assert/is-diagonal-type]: test if an input value is a BLAS diagonal type.
- [`isLayout( value )`][@stdlib/blas/base/assert/is-layout]: test if an input value is a BLAS memory layout.
- [`isMatrixTriangle( value )`][@stdlib/blas/base/assert/is-matrix-triangle]: test if an input value is a BLAS matrix triangle.
- [`isOperationSide( value )`][@stdlib/blas/base/assert/is-operation-side]: test if an input value is a BLAS operation side.
- [`isTransposeOperation( value )`][@stdlib/blas/base/assert/is-transpose-operation]: test if an input value is a BLAS transpose operation.
## Examples
```javascript
var objectKeys = require( '@stdlib/utils/keys' );
var ns = require( '@stdlib/blas/base/assert' );
console.log( objectKeys( ns ) );
```
[@stdlib/blas/base/assert/is-diagonal-type]: https://github.com/stdlib-js/blas/tree/main/base/assert/is-diagonal-type
[@stdlib/blas/base/assert/is-layout]: https://github.com/stdlib-js/blas/tree/main/base/assert/is-layout
[@stdlib/blas/base/assert/is-matrix-triangle]: https://github.com/stdlib-js/blas/tree/main/base/assert/is-matrix-triangle
[@stdlib/blas/base/assert/is-operation-side]: https://github.com/stdlib-js/blas/tree/main/base/assert/is-operation-side
[@stdlib/blas/base/assert/is-transpose-operation]: https://github.com/stdlib-js/blas/tree/main/base/assert/is-transpose-operation