esnext.math.imulh.js

var $ = require('../internals/export');

// `Math.imulh` method
// https://gist.github.com/BrendanEich/4294d5c212a6d2254703
// TODO: Remove from `core-js@4`
$({ target: 'Math', stat: true }, {
  imulh: function imulh(u, v) {
    var UINT16 = 0xFFFF;
    var $u = +u;
    var $v = +v;
    var u0 = $u & UINT16;
    var v0 = $v & UINT16;
    var u1 = $u >> 16;
    var v1 = $v >> 16;
    var t = (u1 * v0 >>> 0) + (u0 * v0 >>> 16);
    return u1 * v1 + (t >> 16) + ((u0 * v1 >>> 0) + (t & UINT16) >> 16);
  }
});