reign/lib/hash-functions/integer/index.js

A persistent, typed-objects implementation.

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.default = hashInteger;

var _performance = require("../../performance");

/**
 * From https://github.com/v8/v8/blob/master/src/js/collection.js
 */
function hashInteger(input) {
  let hash = input;
  hash = hash ^ 0;
  hash = ~hash + (hash << 15);
  hash = hash ^ hash >>> 12;
  hash = hash + (hash << 2);
  hash = hash ^ hash >>> 4;
  hash = hash * 2057 | 0;
  hash = hash ^ hash >>> 16;
  return hash & 0x3fffffff;
}

(0, _performance.forceInline)(hashInteger);