# Half ln(2) > One half times the [natural logarithm][@stdlib/math/base/special/ln] of 2.

## Usage ```javascript var HALF_LN2 = require( '@stdlib/constants/float64/half-ln-two' ); ``` #### HALF_LN2 One half times the [natural logarithm][@stdlib/math/base/special/ln] of `2`. ```javascript var bool = ( HALF_LN2 === 3.46573590279972654709e-01 ); // returns true ```

## Examples ```javascript var HALF_LN2 = require( '@stdlib/constants/float64/half-ln-two' ); console.log( HALF_LN2 ); // => 3.46573590279972654709e-01 ```

[@stdlib/math/base/special/ln]: https://www.npmjs.com/package/@stdlib/math-base-special-ln