Base 2 logarithm of Euler's number.
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> Base 2 logarithm of the mathematical constant [_e_][eulers-number].
``bash`
npm install @stdlib/constants-float64-log2-e
`javascript`
var LOG2E = require( '@stdlib/constants-float64-log2-e' );
#### LOG2E
Base 2 logarithm of the mathematical constant [_e_][eulers-number].
`javascript`
var bool = ( LOG2E === 1.4426950408889634 );
// returns true
`javascript
var LOG2E = require( '@stdlib/constants-float64-log2-e' );
console.log( LOG2E );
// => 1.4426950408889634
`
*
`c`
#include "stdlib/constants/float64/log2_e.h"
#### STDLIB_CONSTANT_FLOAT64_LOG2E
Macro for the base 2 logarithm of the mathematical constant [_e_][eulers-number].
*
- [@stdlib/constants-float64/e][@stdlib/constants/float64/e]: euler's number.
- [@stdlib/constants-float64/log10-e][@stdlib/constants/float64/log10-e]: base 10 logarithm of Euler's number.
*
This package is part of [stdlib][stdlib], a standard library for JavaScript and Node.js, with an emphasis on numerical and scientific computing. The library provides a collection of robust, high performance libraries for mathematics, statistics, streams, utilities, and more.
For more information on the project, filing bug reports and feature requests, and guidance on how to develop [stdlib][stdlib], see the main project [repository][stdlib].
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---
See [LICENSE][stdlib-license].
Copyright © 2016-2026. The Stdlib [Authors][stdlib-authors].
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[umd]: https://github.com/umdjs/umd
[es-module]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Modules
[deno-url]: https://github.com/stdlib-js/constants-float64-log2-e/tree/deno
[deno-readme]: https://github.com/stdlib-js/constants-float64-log2-e/blob/deno/README.md
[umd-url]: https://github.com/stdlib-js/constants-float64-log2-e/tree/umd
[umd-readme]: https://github.com/stdlib-js/constants-float64-log2-e/blob/umd/README.md
[esm-url]: https://github.com/stdlib-js/constants-float64-log2-e/tree/esm
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[stdlib-license]: https://raw.githubusercontent.com/stdlib-js/constants-float64-log2-e/main/LICENSE
[eulers-number]: https://en.wikipedia.org/wiki/E_%28mathematical_constant%29
[@stdlib/constants/float64/e]: https://www.npmjs.com/package/@stdlib/constants-float64-e
[@stdlib/constants/float64/log10-e]: https://www.npmjs.com/package/@stdlib/constants-float64-log10-e