public BigInteger[] DivideAndRemainder(BigInteger val)
{
if (val.sign == 0)
{
throw new ArithmeticException("Division by zero error");
}
BigInteger[] integerArray = new BigInteger[2];
if (this.sign == 0)
{
integerArray[0] = Zero;
integerArray[1] = Zero;
return integerArray;
}
if (val.QuickPow2Check())
{
int n = val.Abs().BitLength - 1;
BigInteger integer = this.Abs().ShiftRight(n);
int[] numArray = this.LastNBits(n);
integerArray[0] = (val.sign == this.sign) ? integer : integer.Negate();
integerArray[1] = new BigInteger(this.sign, numArray, true);
return integerArray;
}
int[] x = (int[])this.magnitude.Clone();
int[] mag = this.Divide(x, val.magnitude);
integerArray[0] = new BigInteger(this.sign * val.sign, mag, true);
integerArray[1] = new BigInteger(this.sign, x, true);
return integerArray;
}
public BigInteger Remainder(BigInteger n)
{
int[] numArray;
if (n.sign == 0)
{
throw new ArithmeticException("Division by zero error");
}
if (this.sign == 0)
{
return Zero;
}
if (n.magnitude.Length == 1)
{
int m = n.magnitude[0];
if (m > 0)
{
if (m != 1)
{
int num2 = this.Remainder(m);
if (num2 != 0)
{
return new BigInteger(this.sign, new int[] { num2 }, false);
}
}
return Zero;
}
}
if (CompareNoLeadingZeroes(0, this.magnitude, 0, n.magnitude) < 0)
{
return this;
}
if (n.QuickPow2Check())
{
numArray = this.LastNBits(n.Abs().BitLength - 1);
}
else
{
numArray = (int[])this.magnitude.Clone();
numArray = this.Remainder(numArray, n.magnitude);
}
return new BigInteger(this.sign, numArray, true);
}
public BigInteger Divide(BigInteger val)
{
if (val.sign == 0)
{
throw new ArithmeticException("Division by zero error");
}
if (this.sign == 0)
{
return Zero;
}
if (val.QuickPow2Check())
{
BigInteger integer = this.Abs().ShiftRight(val.Abs().BitLength - 1);
if (val.sign != this.sign)
{
return integer.Negate();
}
return integer;
}
int[] x = (int[])this.magnitude.Clone();
return new BigInteger(this.sign * val.sign, this.Divide(x, val.magnitude), true);
}
public BigInteger Multiply(BigInteger val)
{
if ((this.sign == 0) || (val.sign == 0))
{
return Zero;
}
if (val.QuickPow2Check())
{
BigInteger integer = this.ShiftLeft(val.Abs().BitLength - 1);
if (val.sign <= 0)
{
return integer.Negate();
}
return integer;
}
if (this.QuickPow2Check())
{
BigInteger integer2 = val.ShiftLeft(this.Abs().BitLength - 1);
if (this.sign <= 0)
{
return integer2.Negate();
}
return integer2;
}
int num = ((this.BitLength + val.BitLength) / 0x20) + 1;
int[] w = new int[num];
if (val == this)
{
Square(w, this.magnitude);
}
else
{
Multiply(w, this.magnitude, val.magnitude);
}
return new BigInteger(this.sign * val.sign, w, true);
}