LibTest/core/int/operator_unary_minus_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 The unary '-' operator. 
 * @description Checks that this operator returns correct value.
 * @author vasya
 * @reviewer msyabro
 * @reviewer rodionov
 */
import "../../../Utils/expect.dart";

List<int> v;

main() {
  v=[0, 1, 10, 2147483647, 4294967295, 9223372036854775807, 147808829414345923316083210206383297601];
  Expect.equals(0, -v[0]);
  Expect.equals(0, -(-v[0]));
  Expect.equals(-1, -v[1]);
  Expect.equals(1, -(-v[1]));
  Expect.equals(-10, -v[2]);
  Expect.equals(-2147483647, -(v[3]));
  Expect.equals(-4294967295, -(v[4]));
  Expect.equals(-9223372036854775807, -(v[5]));
  Expect.equals(9223372036854775807, -(-(v[5])));
  Expect.equals(-147808829414345923316083210206383297601, -(v[6]));
  // -(-x) = x
  for(int i = 0; i <= 1000; i++) {
    int num = 1 << i;
    Expect.equals(num, -(-num));
    num = -1 << i;
    Expect.equals(num, -(-num));
  }
}