# Golden Ratio (φ)
> [Golden ratio][phi].
The [golden ratio][phi] can be defined algebraically as
## Usage
```javascript
var PHI = require( '@stdlib/constants/float64/phi' );
```
#### PHI
The [golden ratio][phi-value].
```javascript
var bool = ( PHI === 1.618033988749895 );
// returns true
```
## Examples
```javascript
var PHI = require( '@stdlib/constants/float64/phi' );
console.log( PHI );
// => 1.618033988749895
```
[phi]: http://en.wikipedia.org/wiki/Golden_ratio
[phi-value]: http://oeis.org/A001622
