| Addition(DoubleDouble, DoubleDouble) | Computes the sum of two double double numbers. |
| Division(DoubleDouble, DoubleDouble) | Computes the quotient of two double double numbers. |
| Equality(DoubleDouble, DoubleDouble) | Determines whether two double double values are equal. |
| (DoubleDouble to Double) | Converts a double double value to a double value. |
| GreaterThan(DoubleDouble, DoubleDouble) | Determines whether the first value is greater than the second value. |
| GreaterThanOrEqual(DoubleDouble, DoubleDouble) | Determines whether the first value is greater than or equal to the second value. |
| (Double to DoubleDouble) | Converts a double value to a double double value. |
| Inequality(DoubleDouble, DoubleDouble) | Determines whether two double double values are unequal. |
| LessThan(DoubleDouble, DoubleDouble) | Determines whether the first value is less than the second value. |
| LessThanOrEqual(DoubleDouble, DoubleDouble) | Determines whether the first value is less than or equal to the second value. |
| Multiply(DoubleDouble, DoubleDouble) | Computes the product of two double double numbers. |
| Subtraction(DoubleDouble, DoubleDouble) | Computes the difference of two double double numbers. |
| UnaryNegation(DoubleDouble) | Negates a double double number. |