| // Copyright (C) 2017 Mozilla Corporation. All rights reserved. |
| // This code is governed by the BSD license found in the LICENSE file. |
| |
| /*--- |
| esid: sec-atomics.store |
| description: Test Atomics.store on arrays that allow atomic operations. |
| includes: [testAtomics.js, testTypedArray.js] |
| features: [SharedArrayBuffer, ArrayBuffer, DataView, Atomics, arrow-function, let, TypedArray, for-of] |
| ---*/ |
| |
| var sab = new SharedArrayBuffer(1024); |
| var ab = new ArrayBuffer(16); |
| |
| var int_views = [Int8Array, Uint8Array, Int16Array, Uint16Array, Int32Array, Uint32Array]; |
| |
| testWithTypedArrayConstructors(function(View) { |
| // Make it interesting - use non-zero byteOffsets and non-zero indexes. |
| |
| var view = new View(sab, 32, 20); |
| var control = new View(ab, 0, 2); |
| |
| for ( let val of [10, |
| -5, |
| 12345, |
| 123456789, |
| Math.PI, |
| "33", |
| { valueOf: () => 33 }, |
| undefined] ) |
| { |
| assert.sameValue(Atomics.store(view, 3, val), ToInteger(val), |
| "Atomics.store returns its third argument (" + val + ") converted to Integer, not the input value nor the value that was stored"); |
| |
| control[0] = val; |
| assert.sameValue(view[3], control[0]); |
| } |
| |
| // In-bounds boundary cases for indexing |
| testWithAtomicsInBoundsIndices(function(IdxGen) { |
| let Idx = IdxGen(view); |
| view.fill(0); |
| Atomics.store(view, Idx, 37); |
| assert.sameValue(Atomics.load(view, Idx), 37); |
| }); |
| }, int_views); |
| |
| function ToInteger(v) { |
| v = +v; |
| if (isNaN(v)) |
| return 0; |
| if (v == 0 || !isFinite(v)) |
| return v; |
| if (v < 0) |
| return -Math.floor(Math.abs(v)); |
| return Math.floor(v); |
| } |