@stdlib/strided/base/reinterpret-complex128/README.md

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# reinterpret

> Reinterpret a [`Complex128Array`][@stdlib/array/complex128] as a [`Float64Array`][@stdlib/array/float64].

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## Usage

```javascript
var reinterpret = require( '@stdlib/strided/base/reinterpret-complex128' );
```

#### reinterpret( x, offset )

Returns a [`Float64Array`][@stdlib/array/float64] view of a [`Complex128Array`][@stdlib/array/complex128].

```javascript
var Complex128Array = require( '@stdlib/array/complex128' );

var x = new Complex128Array( 10 );

var view = reinterpret( x, 0 );
// returns <Float64Array>

var bool = ( view.buffer === x.buffer );
// returns true

var len = view.length;
// returns 20
```

The `offset` argument specifies the starting index of the returned [`Float64Array`][@stdlib/array/float64] view relative to the [`Complex128Array`][@stdlib/array/complex128].

```javascript
var Complex128Array = require( '@stdlib/array/complex128' );

var x = new Complex128Array( [ 1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0 ] );

var view = reinterpret( x, 2 );
// returns <Float64Array>

var len = view.length;
// returns 4

var re = view[ 0 ];
// returns 5.0

var im = view[ 1 ];
// returns 6.0
```

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## Examples

<!-- eslint no-undef: "error" -->

```javascript
var Complex128Array = require( '@stdlib/array/complex128' );
var real = require( '@stdlib/complex/float64/real' );
var imag = require( '@stdlib/complex/float64/imag' );
var reinterpret = require( '@stdlib/strided/base/reinterpret-complex128' );

// Define a complex number array:
var x = new Complex128Array( [ 1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0 ] );
// returns <Complex128Array>

// Reinterpret as a `float64` array:
var view = reinterpret( x, 0 );
// returns <Float64Array>

// Set view elements:
view[ 0 ] = 9.0;
view[ 1 ] = 10.0;

// Get the first element of the complex number array:
var z = x.get( 0 );
// returns <Complex128>

var re = real( z );
// returns 9.0

var im = imag( z );
// returns 10.0
```

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* * *

## See Also

-   <span class="package-name">[`@stdlib/strided/base/reinterpret-complex`][@stdlib/strided/base/reinterpret-complex]</span><span class="delimiter">: </span><span class="description">reinterpret a complex-valued floating-point array as a real-valued floating-point array having the same precision.</span>
-   <span class="package-name">[`@stdlib/strided/base/reinterpret-complex64`][@stdlib/strided/base/reinterpret-complex64]</span><span class="delimiter">: </span><span class="description">reinterpret a Complex64Array as a Float32Array.</span>

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[@stdlib/array/complex128]: https://www.npmjs.com/package/@stdlib/array-complex128

[@stdlib/array/float64]: https://www.npmjs.com/package/@stdlib/array-float64

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[@stdlib/strided/base/reinterpret-complex]: https://github.com/stdlib-js/strided/tree/main/base/reinterpret-complex

[@stdlib/strided/base/reinterpret-complex64]: https://github.com/stdlib-js/strided/tree/main/base/reinterpret-complex64

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