System.Numerics.BigIntegerBuilder.ShiftLeft C# (CSharp) Méthode

        public void ShiftLeft(int cbit) {
            if (cbit <= 0) {
                if (cbit < 0) {
                    this.ShiftRight(-cbit);
                }
            }
            else {
                this.ShiftLeft(cbit / 0x20, cbit % 0x20);
            }
        }

 public static void GCD(ref BigIntegerBuilder reg1, ref BigIntegerBuilder reg2)
 {
     if (((reg1._iuLast > 0) && (reg1._rgu[0] == 0)) || ((reg2._iuLast > 0) && (reg2._rgu[0] == 0)))
     {
         int num  = reg1.MakeOdd();
         int num2 = reg2.MakeOdd();
         LehmerGcd(ref reg1, ref reg2);
         int cbit = Math.Min(num, num2);
         if (cbit > 0)
         {
             reg1.ShiftLeft(cbit);
         }
     }
     else
     {
         LehmerGcd(ref reg1, ref reg2);
     }
 }