inRange.js
 1  var baseInRange = require('./_baseInRange'),
 2      toFinite = require('./toFinite'),
 3      toNumber = require('./toNumber');
 4  
 5  /**
 6   * Checks if `n` is between `start` and up to, but not including, `end`. If
 7   * `end` is not specified, it's set to `start` with `start` then set to `0`.
 8   * If `start` is greater than `end` the params are swapped to support
 9   * negative ranges.
10   *
11   * @static
12   * @memberOf _
13   * @since 3.3.0
14   * @category Number
15   * @param {number} number The number to check.
16   * @param {number} [start=0] The start of the range.
17   * @param {number} end The end of the range.
18   * @returns {boolean} Returns `true` if `number` is in the range, else `false`.
19   * @see _.range, _.rangeRight
20   * @example
21   *
22   * _.inRange(3, 2, 4);
23   * // => true
24   *
25   * _.inRange(4, 8);
26   * // => true
27   *
28   * _.inRange(4, 2);
29   * // => false
30   *
31   * _.inRange(2, 2);
32   * // => false
33   *
34   * _.inRange(1.2, 2);
35   * // => true
36   *
37   * _.inRange(5.2, 4);
38   * // => false
39   *
40   * _.inRange(-3, -2, -6);
41   * // => true
42   */
43  function inRange(number, start, end) {
44    start = toFinite(start);
45    if (end === undefined) {
46      end = start;
47      start = 0;
48    } else {
49      end = toFinite(end);
50    }
51    number = toNumber(number);
52    return baseInRange(number, start, end);
53  }
54  
55  module.exports = inRange;