node_modules/lodash-node/underscore/utilities/random.js

/**
 * Lo-Dash 2.4.1 (Custom Build) <http://lodash.com/>
 * Build: `lodash modularize underscore exports="node" -o ./underscore/`
 * Copyright 2012-2013 The Dojo Foundation <http://dojofoundation.org/>
 * Based on Underscore.js 1.5.2 <http://underscorejs.org/LICENSE>
 * Copyright 2009-2013 Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
 * Available under MIT license <http://lodash.com/license>
 */
var baseRandom = require('../internals/baseRandom');

/** Native method shortcuts */
var floor = Math.floor;

/* Native method shortcuts for methods with the same name as other `lodash` methods */
var nativeRandom = Math.random;

/**
 * Produces a random number between `min` and `max` (inclusive). If only one
 * argument is provided a number between `0` and the given number will be
 * returned. If `floating` is truey or either `min` or `max` are floats a
 * floating-point number will be returned instead of an integer.
 *
 * @static
 * @memberOf _
 * @category Utilities
 * @param {number} [min=0] The minimum possible value.
 * @param {number} [max=1] The maximum possible value.
 * @param {boolean} [floating=false] Specify returning a floating-point number.
 * @returns {number} Returns a random number.
 * @example
 *
 * _.random(0, 5);
 * // => an integer between 0 and 5
 *
 * _.random(5);
 * // => also an integer between 0 and 5
 *
 * _.random(5, true);
 * // => a floating-point number between 0 and 5
 *
 * _.random(1.2, 5.2);
 * // => a floating-point number between 1.2 and 5.2
 */
function random(min, max) {
  if (min == null && max == null) {
    max = 1;
  }
  min = +min || 0;
  if (max == null) {
    max = min;
    min = 0;
  } else {
    max = +max || 0;
  }
  return min + floor(nativeRandom() * (max - min + 1));
}

module.exports = random;