<!-- @license Apache-2.0 Copyright (c) 2018 The Stdlib Authors. Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License. --> # LOG10E > Base 10 logarithm of the mathematical constant [_e_][eulers-number]. <section class="usage"> ## Usage ```javascript var LOG10E = require( '@stdlib/constants/float64/log10-e' ); ``` #### LOG10E Base 10 logarithm of the mathematical constant [_e_][eulers-number]. ```javascript var bool = ( LOG10E === 0.4342944819032518 ); // returns true ``` </section> <!-- /.usage --> <section class="examples"> ## Examples <!-- TODO: better example --> <!-- eslint no-undef: "error" --> ```javascript var LOG10E = require( '@stdlib/constants/float64/log10-e' ); console.log( LOG10E ); // => 0.4342944819032518 ``` </section> <!-- /.examples --> <section class="links"> [eulers-number]: https://en.wikipedia.org/wiki/E_%28mathematical_constant%29 </section> <!-- /.links -->