gotour complex pow

gocomplex.go

package main

import(
    "fmt"
	  "math/cmplx"
)

func Cbrt(x complex128) complex128 {
    t := x
    for idx:=0; idx<1000; idx++ {
    	x = x - (x*x*x-t)/(3*x*x) 
    }
    return x
}

func main() {
    input := complex(8, 0)
    fmt.Println(Cbrt(input))
    fmt.Println(cmplx.Pow(Cbrt(input),complex(3,0)))
}