mirror of
https://github.com/tc39/test262.git
synced 2025-11-04 05:33:50 +01:00
62 lines
1.9 KiB
JavaScript
62 lines
1.9 KiB
JavaScript
// Copyright (C) 2017 Mozilla Corporation. All rights reserved.
|
|
// This code is governed by the BSD license found in the LICENSE file.
|
|
|
|
/*---
|
|
esid: sec-atomics.and
|
|
description: Test Atomics.and on arrays that allow atomic operations
|
|
includes: [testAtomics.js, testTypedArray.js]
|
|
features: [ArrayBuffer, arrow-function, Atomics, DataView, for-of, let, SharedArrayBuffer, TypedArray]
|
|
---*/
|
|
|
|
var sab = new SharedArrayBuffer(1024);
|
|
var ab = new ArrayBuffer(16);
|
|
var views = intArrayConstructors.slice();
|
|
|
|
testWithTypedArrayConstructors(function(TA) {
|
|
// Make it interesting - use non-zero byteOffsets and non-zero indexes.
|
|
|
|
var view = new TA(sab, 32, 20);
|
|
var control = new TA(ab, 0, 2);
|
|
|
|
view[8] = 0x33333333;
|
|
control[0] = 0x33333333;
|
|
assert.sameValue(Atomics.and(view, 8, 0x55555555), control[0],
|
|
"Result is subject to chopping");
|
|
|
|
control[0] = 0x11111111;
|
|
assert.sameValue(view[8], control[0]);
|
|
assert.sameValue(Atomics.and(view, 8, 0xF0F0F0F0), control[0],
|
|
"Result is subject to chopping");
|
|
|
|
control[0] = 0x10101010;
|
|
assert.sameValue(view[8], control[0]);
|
|
|
|
view[3] = -5;
|
|
control[0] = -5;
|
|
assert.sameValue(Atomics.and(view, 3, 0), control[0],
|
|
"Result is negative and subject to coercion");
|
|
assert.sameValue(view[3], 0);
|
|
|
|
control[0] = 12345;
|
|
view[3] = 12345;
|
|
assert.sameValue(Atomics.and(view, 3, 0), control[0],
|
|
"Result is subjective to chopping");
|
|
assert.sameValue(view[3], 0);
|
|
|
|
control[0] = 123456789;
|
|
view[3] = 123456789;
|
|
assert.sameValue(Atomics.and(view, 3, 0), control[0],
|
|
"Result is subjective to chopping");
|
|
assert.sameValue(view[3], 0);
|
|
|
|
// In-bounds boundary cases for indexing
|
|
testWithAtomicsInBoundsIndices(function(IdxGen) {
|
|
let Idx = IdxGen(view);
|
|
view.fill(0);
|
|
// Atomics.store() computes an index from Idx in the same way as other
|
|
// Atomics operations, not quite like view[Idx].
|
|
Atomics.store(view, Idx, 37);
|
|
assert.sameValue(Atomics.and(view, Idx, 0), 37);
|
|
});
|
|
}, views);
|