Go BigInt

A BigInt implementation written in Go as practice. BigInt values are stored as strings in this implementation. A boolean flag called negative is used to indicate if a value is positive or negative.

To create a new BigInt use NewBigInt(v string) this method creates a new BigInt object from a string of numbers. It will check that the v string is a valid input. Create values with a string like "1234054" to mark a new value as negative prepend a dash "-5009054", This will set BigInt.negative to true.

Methods called on BigInt b

These methods are called on a BigInt object called b in this example. The value of b is altered depending on the operation.

ToString() Return a string of the BigInt with a minus sign appended for negative values.

Negate() Reverses the polarity of the BigInt. Positive values will be negated. Negative values will become positive.

CompareTo(x *BigInt) is used to compate two BigInt values b and x. Returns -1 if b < x. Returns 0 of b == x. Returns 1 if b > x.

Add(x *BigInt) Add the value of x to BigInt b.

Subtract(x *BigInt) Subtract the value of x from BigInt b.

Multiply(x *BigInt) Multiply BigInt b by the value of x.

DivideByInt(divisor int) Divide BigInt b by the value of the integer divisor.

Divide(x *BigInt) Divide BigInt b by the value of x.