Question

How to calculate power for large numbers in Go

Answer 1

package main

import (
    "fmt"
    "math/big"
)

func CalculateLargeNumbersPower(base int64, exponent int64) *big.Int {
    b := big.NewInt(base)
    result := new(big.Int).Exp(b, big.NewInt(exponent), nil)
    return result
}

func main() {
    for _, n := range []int64{15, 100} {
        power := CalculateLargeNumbersPower(2, n)
        fmt.Printf("2^%d = %s\n", n, power.String())
    }
}



/*
run:

2^15 = 32768
2^100 = 1267650600228229401496703205376

*/

 

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