}

  /**
   * Common interface for retrieving a 64-bit long from a little-endian byte array.
   *
   * <p>This abstraction allows us to use single-instruction load and put when available, or fall
   * back on the slower approach of using Longs.fromBytes(byte...).
   */
  private interface LittleEndianBytes {
    long getLongLittleEndian(byte[] array, int offset);

      for (int j = 0; j < dataSize; ++j) {
        dataset.addEntries(helper);
      }
      dummy ^= helper.toString().hashCode();
    }
    return dummy;
  }

  // When omitEmptyValues() is released, remove this method and add a new @Param "omitEmptyValues".

              }
            });

    assertTrue(at.compareAndSet(1.0, 2.0));
    awaitTermination(t);
    assertBitEquals(3.0, at.get());
  }

  /** repeated weakCompareAndSet succeeds in changing value when equal to expected */
  public void testWeakCompareAndSet() {
    double prev = Math.E;
    double unused = Math.E + Math.PI;
    AtomicDouble at = new AtomicDouble(prev);
    for (double x : VALUES) {

  }

  /**
   * Common interface for retrieving a 64-bit long from a little-endian byte array.
   *
   * <p>This abstraction allows us to use single-instruction load and put when available, or fall
   * back on the slower approach of using Longs.fromBytes(byte...).
   */
  private interface LittleEndianBytes {
    long getLongLittleEndian(byte[] array, int offset);

    } catch (Throwable reflectionFailure) { // sneaky checked exception
      // Some Android 5.0.x Samsung devices have bugs in JDK reflection APIs that cause
      // getDeclaredField to throw a NoSuchFieldException when the field is definitely there.
      // For these users fallback to a suboptimal implementation, based on synchronized. This will
      // be a definite performance hit to those users.

  // Run Enums.getIfPresent on that other TestEnum and then return a WeakReference containing the
  // new ClassLoader. If Enums.getIfPresent does caching that prevents the shadow TestEnum
  // (and therefore its ClassLoader) from being unloaded, then this WeakReference will never be
  // cleared.
  @J2ktIncompatible
  @GwtIncompatible // weak references

 * </ul>
 *
 * To force selection of our fallback strategies we load {@link AbstractFuture} (and all of {@code
 * com.google.common.util.concurrent}) in degenerate class loaders which make certain platform
 * classes unavailable. Then we construct a test suite so we can run the normal AbstractFutureTest
 * test methods in these degenerate classloaders.
 */

public class AbstractFutureFallbackAtomicHelperTest extends TestCase {

    } catch (Throwable reflectionFailure) { // sneaky checked exception
      // Some Android 5.0.x Samsung devices have bugs in JDK reflection APIs that cause
      // getDeclaredField to throw a NoSuchFieldException when the field is definitely there.
      // For these users fallback to a suboptimal implementation, based on synchronized. This will
      // be a definite performance hit to those users.

      for (int j = 0; j < dataSize; ++j) {
        dataset.addEntries(helper);
      }
      dummy ^= helper.toString().hashCode();
    }
    return dummy;
  }

  // When omitEmptyValues() is released, remove this method and add a new @Param "omitEmptyValues".

 * </ul>
 *
 * To force selection of our fallback strategies we load {@link AbstractFuture} (and all of {@code
 * com.google.common.util.concurrent}) in degenerate class loaders which make certain platform
 * classes unavailable. Then we construct a test suite so we can run the normal AbstractFutureTest
 * test methods in these degenerate classloaders.
 */

public class AbstractFutureFallbackAtomicHelperTest extends TestCase {