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+// 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: returns -1 if the element if not found
+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).
+ 6. Else n < 0,
+ a. Let k be len + n.
+ 7. Repeat, while k ≥ 0
+ ...
+ 8. Return -1.
+includes: [testBigIntTypedArray.js]
+features: [BigInt, TypedArray]
+---*/
+
+testWithBigIntTypedArrayConstructors(function(TA) {
+ var sample;
+
+ sample = new TA([42n, 43n, 42n, 41n]);
+ assert.sameValue(sample.lastIndexOf(44n), -1, "lastIndexOf(44)");
+ assert.sameValue(sample.lastIndexOf(44n, -4), -1, "lastIndexOf(44, -4)");
+ assert.sameValue(sample.lastIndexOf(44n, -5), -1, "lastIndexOf(44, -5)");
+ assert.sameValue(sample.lastIndexOf(42n, -5), -1, "lastIndexOf(42, -5)");
+ assert.sameValue(sample.lastIndexOf(43n, -4), -1, "lastIndexOf(43, -4)");
+ assert.sameValue(sample.lastIndexOf(43n, -5), -1, "lastIndexOf(43, -5)");
+ assert.sameValue(sample.lastIndexOf(41n, 0), -1, "lastIndexOf(41, 0)");
+ assert.sameValue(sample.lastIndexOf(41n, 1), -1, "lastIndexOf(41, 1)");
+ assert.sameValue(sample.lastIndexOf(41n, 2), -1, "lastIndexOf(41, 2)");
+ assert.sameValue(sample.lastIndexOf(43n, 0), -1, "lastIndexOf(43, 0)");
+});
+
+reportCompare(0, 0);