| // 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.lastindexof |
| description: -0 fromIndex becomes 0 |
| info: | |
| 22.2.3.17 %TypedArray%.prototype.lastIndexOf ( searchElement [ , fromIndex ] ) |
| |
| %TypedArray%.prototype.lastIndexOf is a distinct function that implements the |
| same algorithm as Array.prototype.lastIndexOf as defined in 22.1.3.15 except |
| that the this object's [[ArrayLength]] internal slot is accessed in place of |
| performing a [[Get]] of "length". |
| |
| 22.1.3.15 Array.prototype.lastIndexOf ( searchElement [ , fromIndex ] ) |
| |
| ... |
| 5. If n ≥ 0, then |
| a. If n is -0, let k be +0; else let k be min(n, len - 1). |
| ... |
| includes: [testTypedArray.js] |
| features: [TypedArray] |
| ---*/ |
| |
| testWithTypedArrayConstructors(function(TA) { |
| var sample; |
| |
| sample = new TA([42, 43]); |
| assert.sameValue(sample.lastIndexOf(42, -0), 0, "-0 [0]"); |
| assert.sameValue(sample.lastIndexOf(43, -0), -1, "-0 [1]"); |
| }); |
