# Natural logarithm of π > Natural logarithm of the mathematical constant [π][pi].

## Usage ```javascript var LN_PI = require( '@stdlib/constants/float64/ln-pi' ); ``` #### LN_PI Natural logarithm of the mathematical constant [π][pi]. ```javascript var bool = ( LN_PI === 1.1447298858494002 ); // returns true ```

## Examples ```javascript var LN_PI = require( '@stdlib/constants/float64/ln-pi' ); console.log( LN_PI ); // => 1.1447298858494002 ```

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