LibTest/core/int/operator_OR_A01_t01.dart

/*
 * Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
 * for details. All rights reserved. Use of this source code is governed by a
 * BSD-style license that can be found in the LICENSE file.
 */
/**
 * @assertion This operator implements a bit-wise OR operation.
 * @description Checks that this operator returns correct value.
 * @author vasya
 * @reviewer msyabro
 * @reviewer rodionov
 */
import "../../../Utils/expect.dart";

void main() {
  Expect.equals(0, 0 | 0);
  Expect.equals(1, 0 | 1);
  Expect.equals(1, 1 | 0);
  Expect.equals(1, 1 | 1);    

  Expect.equals(27, 25 | 3);
  Expect.equals(15, 15 | 9);
  
  Expect.equals(3, 3 | 3);
  Expect.equals(3, 3 | 2);
  Expect.equals(3, 1 | 2);
  Expect.equals(3, 0 | 3);

  // check int32
  Expect.equals(0x180000000, 0x100000000 | 0x80000000);
  // check int64
  Expect.equals(0x18000000000000000, 0x10000000000000000 | 0x8000000000000000);
  
  Expect.equals(0x7fffffffffffffffff, 0x7fffffffffffffffff | 400000000000000000);

  // assuming a large int is represented using minimum number of bytes required and the leftmost bit stands for the sign
  int bignum = 0x265ABCF6285BC6235DCBA78638653786378;
  Expect.equals(bignum, bignum | bignum);
  Expect.equals(-1, bignum | (-1 - bignum));
}