/** * @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. */ 'use strict'; // MODULES // var floor = require( '@stdlib/math-base-special-floor' ); // MAIN // /** * Tests if a finite double-precision floating-point number is an integer. * * @param {number} x - value to test * @returns {boolean} boolean indicating whether the value is an integer * * @example * var bool = isInteger( 1.0 ); * // returns true * * @example * var bool = isInteger( 3.14 ); * // returns false */ function isInteger( x ) { return (floor(x) === x); } // EXPORTS // module.exports = isInteger;