docs: function buildMathAliases() {
    defineInstanceSimilar(sugarNumber, 'abs pow sin asin cos acos tan atan exp pow sqrt', function(methods, name) {
      methods[name] = function(n, arg) {
        // Note that .valueOf() here is only required due to a
        // very strange bug in iOS7 that only occurs occasionally
        // in which Math.abs() called on non-primitive numbers
        // returns a completely different number (Issue #400)
        return Math[name](n.valueOf(), arg);
      };
    });
  }