using System;
using Unosquare.Swan.Abstractions;

namespace Unosquare.Swan {
  /// <summary>
  /// Fast, atomic double combining interlocked to write value and volatile to read values.
  /// </summary>
  public sealed class AtomicDouble : AtomicTypeBase<Double> {
    /// <summary>
    /// Initializes a new instance of the <see cref="AtomicDouble"/> class.
    /// </summary>
    /// <param name="initialValue">if set to <c>true</c> [initial value].</param>
    public AtomicDouble(Double initialValue = default)
        : base(BitConverter.DoubleToInt64Bits(initialValue)) {
      // placeholder
    }

    /// <inheritdoc/>
    protected override Double FromLong(Int64 backingValue) =>
        BitConverter.Int64BitsToDouble(backingValue);

    /// <inheritdoc/>
    protected override Int64 ToLong(Double value) =>
        BitConverter.DoubleToInt64Bits(value);
  }
}