在比较之前将浮点值转换为按位整数有什么好处？

问：

当我们在 c# 中比较从 proto 文件生成的同一类的两个对象时，我们可以使用 since grpc protobuf 覆盖来比较每个字段。Equals()Equals()

但是，对于浮点型和双精度型字段， 有这样的 ProtobufEqualityComparers：

  /// <summary>
  /// Provides a central place to implement equality comparisons, primarily for bitwise float/double equality.
  /// </summary>
  public static class ProtobufEqualityComparers
  {
    /// <summary>
    /// Returns an equality comparer for <typeparamref name="T" /> suitable for Protobuf equality comparisons.
    /// This is usually just the default equality comparer for the type, but floating point numbers are compared
    /// bitwise.
    /// </summary>
    /// <typeparam name="T">The type of equality comparer to return.</typeparam>
    /// <returns>The equality comparer.</returns>
    public static EqualityComparer<T> GetEqualityComparer<T>()
    {
      if (typeof (T) == typeof (double))
        return (EqualityComparer<T>) ProtobufEqualityComparers.BitwiseDoubleEqualityComparer;
      if (typeof (T) == typeof (float))
        return (EqualityComparer<T>) ProtobufEqualityComparers.BitwiseSingleEqualityComparer;
      if (typeof (T) == typeof (double?))
        return (EqualityComparer<T>) ProtobufEqualityComparers.BitwiseNullableDoubleEqualityComparer;
      return !(typeof (T) == typeof (float?)) ? EqualityComparer<T>.Default : (EqualityComparer<T>) ProtobufEqualityComparers.BitwiseNullableSingleEqualityComparer;
    }

具体而言，有一个用于双精度值的 BitwiseDoubleEqualityComparer，以及用于浮点值的 BitwiseSingleEqualityComparer。

我们为什么需要它们？

我相信 BitwiseDoubleEqualityComparer 和 BitwiseSingleEqualityComparer 在比较浮点数时无法解决精度问题。