CODEWITHSUNDEEP
go
Eddie Curtis
Eddie Curtis

Reputation: 1237

How do you calculate the square root of a Big Int in Go?

I'm attempting to calculate the square root of a Big Int in Go, but I'm not sure if I'm using the function correctly (or even the correct function).

Here is what I have so far:

package main

import (
    "fmt"
    "math/big"
)

func main() {
    x := big.NewInt(10)
    fmt.Print(x.ModSqrt(big.NewInt(2), big.NewInt(1)))
}

I am trying to calculate the square root of 10, but the output of this code is <nil>.

Can someone please explain how to use this method correctly as I don't understand the documentation and I can't find any usages of this elsewhere that might help me understand how to use the method?

Upvotes: 0

Views: 585

Answers (1)

user2357112
user2357112

Reputation: 281519

The big package contains nothing for taking square roots. You'll have to implement it yourself. ModSqrt, in particular, is useless to you; it's a modular arithmetic thing.

Upvotes: 2

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