Golang大整数到二进制字符串

I see it's simple to convert golang's big int (math/big package) to a string, but is there any straightforward way of converting a big int to a binary string?

Should be as easy as this:

i := big.NewInt(2014)
s := fmt.Sprintf("%b", i) // 11111011110

fmt.Println(s)

Hope this is what you are looking for.