public static BigDouble Multiply(BigDouble left, BigDouble right)
{
BigDouble bd = new BigDouble(
left.Value * right.Value,
left.Exp + right.Exp);
bd.Simplify();
return(bd);
}
public static BigDouble Divide(BigDouble dividend, BigDouble divisor)
{
if (divisor == 0)
{
throw new DivideByZeroException();
}
BigDouble bd = new BigDouble(
dividend.Value / divisor.Value,
dividend.Exp - divisor.Exp);
bd.Simplify();
return(bd);
}
public static BigDouble operator+(BigDouble a, BigDouble b)
{
if (a.Exp == b.Exp)
{
BigDouble m = new BigDouble();
m.Exp = a.Exp;
m.Value = a.Value + b.Value;
m.Simplify();
return(m);
}
else if (a.Exp > b.Exp)
{
// a is bigger
ulong deltaExp = a.Exp - b.Exp;
if (deltaExp <= 16)
{
double bX = b.Value / Math.Pow(10, deltaExp);
BigDouble m = new BigDouble();
m.Exp = a.Exp;
m.Value = a.Value + bX;
m.Simplify();
return(m);
}
else
{
return(a);
}
}
else
{
// b is bigger
ulong deltaExp = b.Exp - a.Exp;
if (deltaExp <= 16)
{
double aX = a.Value / Math.Pow(10, deltaExp);
BigDouble m = new BigDouble();
m.Exp = b.Exp;
m.Value = b.Value + aX;
m.Simplify();
return(m);
}
else
{
return(b);
}
}
}