C# extensions for converting between UInt32 and UInt16

IntExtensions.cs

/// <summary>
/// Joins two 16bit integers to a single 32bit value.
/// </summary>
/// <param name="int1">The integer to use for the high bits.</param>
/// <param name="int2">The integer to use for the low bits.</param>
/// <returns>An unsigned 32bit integer.</returns>
public static UInt32 Join(this UInt16 int1, UInt16 int2)
{
    return (uint) ((int1 << 16) | int2);
}

/// <summary>
/// Splits a single 32bit integer to two unsigned 16bit integers.
/// </summary>
/// <param name="int1">The 32bit integer to be split.</param>
/// <returns>Two unsigned 16bit integers. The high bits are placed
/// in Item1, the lower in Item2.</returns>
public static (UInt16, UInt16) Split(this UInt32 int1)
{
    var high = System.Convert.ToUInt16((int1 >> 16) & 0xffff);
    var low = System.Convert.ToUInt16(int1 & 0xffff);

    return (high, low);
}