*/

package com.google.common.util.concurrent;

import static com.google.common.base.Preconditions.checkNotNull;
import static java.lang.Double.doubleToRawLongBits;
import static java.lang.Double.longBitsToDouble;

import com.google.common.annotations.GwtIncompatible;
import com.google.common.annotations.J2ktIncompatible;
import com.google.common.primitives.ImmutableLongArray;

import static java.lang.Double.MIN_EXPONENT;
import static java.lang.Double.POSITIVE_INFINITY;
import static java.lang.Double.doubleToRawLongBits;
import static java.lang.Double.isNaN;
import static java.lang.Double.longBitsToDouble;
import static java.lang.Math.getExponent;
import static java.lang.Math.max;

import com.google.common.annotations.GwtIncompatible;
import com.google.common.annotations.VisibleForTesting;
import java.math.BigInteger;

import static java.lang.Double.MIN_EXPONENT;
import static java.lang.Double.POSITIVE_INFINITY;
import static java.lang.Double.doubleToRawLongBits;
import static java.lang.Double.isNaN;
import static java.lang.Double.longBitsToDouble;
import static java.lang.Math.getExponent;
import static java.lang.Math.max;

import com.google.common.annotations.GwtIncompatible;
import com.google.common.annotations.VisibleForTesting;
import java.math.BigInteger;

    hasher.putFloat(Float.intBitsToFloat(0x04030201));
    hasher.assertBytes(new byte[] {1, 2, 3, 4});
  }

  public void testDouble() {
    TestHasher hasher = new TestHasher();
    hasher.putDouble(Double.longBitsToDouble(0x0807060504030201L));
    hasher.assertBytes(new byte[] {1, 2, 3, 4, 5, 6, 7, 8});
  }

  public void testCorrectExceptions() {
    TestHasher hasher = new TestHasher();

    out.writeShort((short) 50000);
    out.writeInt(0xCAFEBABE);
    out.writeLong(0xDEADBEEFCAFEBABEL);
    out.writeUTF("Herby Derby");
    out.writeFloat(Float.intBitsToFloat(0xCAFEBABE));
    out.writeDouble(Double.longBitsToDouble(0xDEADBEEFCAFEBABEL));
  }

  public void testReadFully() throws IOException {
    DataInput in = new LittleEndianDataInputStream(new ByteArrayInputStream(data));
    byte[] b = new byte[data.length];

     * @param si the starting index in the source array
     * @return the decoded double value
     */
    public static double dec_doublele(final byte[] src, final int si) {
        return Double.longBitsToDouble(dec_uint64le(src, si));
    }

    /**
     * Decodes a double value from big-endian byte order.
     *
     * @param src the source byte array
     * @param si the starting index in the source array

     * @param si the starting index in the source array
     * @return the decoded double value
     */
    public static double dec_doublele(final byte[] src, final int si) {
        return Double.longBitsToDouble(dec_uint64le(src, si));
    }

    /**
     * Decodes a double value from big-endian byte order.
     *
     * @param src the source byte array
     * @param si the starting index in the source array

   * @throws IOException if an I/O error occurs
   */
  @CanIgnoreReturnValue // to skip some bytes
  @Override
  public double readDouble() throws IOException {
    return Double.longBitsToDouble(readLong());
  }

  @CanIgnoreReturnValue // to skip a field
  @Override
  public String readUTF() throws IOException {
    return new DataInputStream(in).readUTF();
  }

  /**

    HashCode unused = sink.hash();
    sink.assertInvariants(4);
    sink.assertBytes(new byte[] {1, 2, 3, 4});
  }

  public void testDouble() {
    Sink sink = new Sink(8);
    sink.putDouble(Double.longBitsToDouble(0x0807060504030201L));
    HashCode unused = sink.hash();
    sink.assertInvariants(8);
    sink.assertBytes(new byte[] {1, 2, 3, 4, 5, 6, 7, 8});
  }

  public void testCorrectExceptions() {

        fractionalBuilder.add(d * scale).add(-d * scale);
      }
    }
    for (int i = Double.MIN_EXPONENT; i <= Double.MAX_EXPONENT; i++) {
      for (int direction : new int[] {1, -1}) {
        double d = Double.longBitsToDouble(Double.doubleToLongBits(Math.scalb(1.0, i)) + direction);
        // Math.nextUp/nextDown
        if (d != Math.rint(d)) {
          fractionalBuilder.add(d);
        }
      }
    }
    for (double d :