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# 1/2 times π

> One half times the mathematical constant [π][pi].

<section class="usage">

## Usage

```javascript
var HALF_PI = require( '@stdlib/constants/float64/half-pi' );
```

#### HALF_PI

One half times the mathematical constant [π][pi].

```javascript
var bool = ( HALF_PI === 1.5707963267948966 );
// returns true
```

</section>

<!-- /.usage -->

<section class="examples">

## Examples

<!-- TODO: better example -->

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

```javascript
var HALF_PI = require( '@stdlib/constants/float64/half-pi' );

console.log( HALF_PI );
// => 1.5707963267948966
```

</section>

<!-- /.examples -->

<section class="links">

[pi]: https://en.wikipedia.org/wiki/Pi

</section>

<!-- /.links -->