src/v8/test/mjsunit/regress/regress-6838-3.js

// Copyright 2017 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.

// Flags: --allow-natives-syntax

(function TestMathAbsReturningUnsigned() {
  function Module(stdlib) {
    "use asm";
    var abs=stdlib.Math.abs;
    function f(a, b) {
      a = a | 0;
      b = b | 0;
      return (abs(a >> 0) == (b >>> 0)) | 0;
    }
    return f;
  }
  var f = Module(this);
  assertEquals(0, f(1, 2));
  assertEquals(1, f(23, 23));
  assertEquals(1, f(-42, 42));
  assertEquals(1, f(-0x7fffffff, 0x7fffffff));
  assertEquals(1, f(-0x80000000, 0x80000000));
  assertTrue(%IsAsmWasmCode(Module));
})();

(function TestMathAbsOverflowSignedValue() {
  function Module(stdlib) {
    "use asm";
    var abs=stdlib.Math.abs;
    function f() {
      return (abs(-0x80000000) > 0) | 0;
    }
    return f;
  }
  var f = Module(this);
  assertEquals(1, f());
  assertTrue(%IsAsmWasmCode(Module));
})();