<!-- @license Apache-2.0 Copyright (c) 2020 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. --> # isComposite > Test if a number is a composite. <section class="intro"> A **composite number** is defined as a positive integer value greater than `1` which has **at least** one divisor other than `1` and itself (i.e., an integer value which can be formed by multiplying two smaller positive integers). </section> <!-- /.intro --> <section class="usage"> ## Usage ```javascript var isComposite = require( '@stdlib/math/base/assert/is-composite' ); ``` #### isComposite( x ) Tests if a number is a composite. ```javascript var bool = isComposite( 4.0 ); // returns true ``` </section> <!-- /.usage --> <section class="notes"> </section> <!-- /.notes --> <section class="examples"> ## Examples <!-- eslint no-undef: "error" --> ```javascript var isComposite = require( '@stdlib/math/base/assert/is-composite' ); var bool = isComposite( 4.0 ); // returns true bool = isComposite( 7.0 ); // returns false bool = isComposite( NaN ); // returns false ``` </section> <!-- /.examples --> <section class="links"> </section> <!-- /.links -->