v8/test/mjsunit/asm/zero-extend.js

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// Copyright 2014 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
var stdlib = this;
var buffer = new ArrayBuffer(64 * 1024);
var foreign = {}
var zext8 = (function Module(stdlib, foreign, heap) {
"use asm";
function zext8(i) {
i = i|0;
return i & 0xff;
}
return { zext8: zext8 };
})(stdlib, foreign, buffer).zext8;
assertEquals(0, zext8(0));
assertEquals(0, zext8(0x100));
assertEquals(0xff, zext8(-1));
assertEquals(0xff, zext8(0xff));
var zext16 = (function Module(stdlib, foreign, heap) {
"use asm";
function zext16(i) {
i = i|0;
return i & 0xffff;
}
return { zext16: zext16 };
})(stdlib, foreign, buffer).zext16;
assertEquals(0, zext16(0));
assertEquals(0, zext16(0x10000));
assertEquals(0xffff, zext16(-1));
assertEquals(0xffff, zext16(0xffff));