In .NET 9.0 (14) new: multiplication of large number with bigmul () ()

Classes for all types Int32, UInt32, Int64 And UInt64 Provide each new method to each BigMul() As a result for multiplication Int64 And UInt64 Or Int128 And UInt128 Back (without overflow) was given.

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In .NET 9.0 (14) new: multiplication of large number with bigmul () ()

public void BigMul()
 {
  CUI.Demo();
 
  long Value1 = long.MaxValue;
  ulong Value2 = ulong.MaxValue;
 
  Console.WriteLine("Value1: " + Value1.ToString("#,0"));
  Console.WriteLine("Value2: " + Value2.ToString("#,0"));
 
  CUI.H1("Normale Multiplikation");
  Int128 e1 = Value1 * 2; // Überlauf! -2
  UInt128 e2 = Value2 * 2; // Überlauf! 18446744073709551614
 
  Console.WriteLine(e1.ToString("#,0")); // Überlauf! -2
  Console.WriteLine(e2.ToString("#,0")); // Überlauf! 18446744073709551614
 
  CUI.H1("Multiplikation mit BigMul()");
  Int128 e3 = Int64.BigMul(Value1, 2); // 18.446.744.073.709.551.614
  UInt128 e4 = UInt64.BigMul(Value2, 2); // 36.893.488.147.419.103.230
  Console.WriteLine(e3.ToString("#,0")); // 18.446.744.073.709.551.614
  Console.WriteLine(e4.ToString("#,0")); // 36.893.488.147.419.103.230
 }

(RME)