text: // Copyright (C) 2016 the V8 project authors. All rights reserved.
  // This code is governed by the BSD license found in the LICENSE file.
  /*---
  esid: sec-%typedarray%.prototype.reduceright
  description: >
    callbackfn arguments using custom accumulator
  info: >
    22.2.3.21 %TypedArray%.prototype.reduceRight ( callbackfn [ , initialValue ] )
  
    %TypedArray%.prototype.reduceRight is a distinct function that implements the
    same algorithm as Array.prototype.reduceRight as defined in 22.1.3.20 except
    that the this object's [[ArrayLength]] internal slot is accessed in place of
    performing a [[Get]] of "length".
  
    22.1.3.20 Array.prototype.reduceRight ( callbackfn [ , initialValue ] )
  
    ...
    8. Repeat, while k ≥ 0
      ...
      c. If kPresent is true, then
        i. Let kValue be ? Get(O, Pk).
        ii. Let accumulator be ? Call(callbackfn, undefined, « accumulator,
        kValue, k, O »).
      d. Decrease k by 1.
    ...
  includes: [testTypedArray.js]
  ---*/
  
  testWithTypedArrayConstructors(function(TA) {
    var sample = new TA([42, 43, 44]);
  
    var results = [];
  
    sample.reduceRight(function(accumulator) {
      results.push(arguments);
      return accumulator + 1;
    }, 7);
  
    assert.sameValue(results.length, 3, "results.length");
  
    assert.sameValue(results[0].length, 4, "results[0].length");
    assert.sameValue(results[0][0], 7, "results[0][0] - accumulator");
    assert.sameValue(results[0][1], 44, "results[0][1] - kValue");
    assert.sameValue(results[0][2], 2, "results[0][2] - k");
    assert.sameValue(results[0][3], sample, "results[0][3] - this");
  
    assert.sameValue(results[1].length, 4, "results[1].length");
    assert.sameValue(results[1][0], 8, "results[1][0] - accumulator");
    assert.sameValue(results[1][1], 43, "results[1][1] - kValue");
    assert.sameValue(results[1][2], 1, "results[1][2] - k");
    assert.sameValue(results[1][3], sample, "results[1][3] - this");
  
    assert.sameValue(results[2].length, 4, "results[2].length");
    assert.sameValue(results[2][0], 9, "results[2][0] - accumulator");
    assert.sameValue(results[2][1], 42, "results[2][1] - kValue");
    assert.sameValue(results[2][2], 0, "results[2][2] - k");
    assert.sameValue(results[2][3], sample, "results[2][3] - this");
  });
  