In order to study value type, look at the.net CORE source INT defined in

 
[Serializable] 
[StructLayout (LayoutKind. Sequential)] 
[TypeForwardedFrom (" mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089 ")] 
Public readonly struct Int16: IComparable, IConvertible, IFormattable, IComparable IEquatable , ISpanFormattable 
{
Private readonly short m_value;//Do not rename (binary serialization) 

Public const short MaxValue=https://bbs.csdn.net/topics/(short) 0 x7fff; 
Public const short MinValue=https://bbs.csdn.net/topics/unchecked ((short) 0 x8000); 

//Compares this object to another object, returning an integer that 
//are the relationship. 
//Returns a value less than zero if this object 
//null is considered to be less than any instance. 
//If the object is not of type Int16, this method throws an ArgumentException. 
//
Public int CompareTo (object? Value) 
{
If (value=null https://bbs.csdn.net/topics/=
{
return 1; 
} 

If value is () 
{
Return m_value - ((short) value). M_value; 
} 

Throw new ArgumentException (SR. Arg_MustBeInt16); 
} 

Public int CompareTo (short value) 
{
Return m_value - value; 
} 

Public override bool Equals ([NotNullWhen (true)] object? Obj) 
{
if (! (obj is)) 
{
return false; 
} 
Return m_value=https://bbs.csdn.net/topics/=((short) obj). M_value; 
} 

M_value this variable assignment, how to operate it,
Another is the incoming are short type