go-tour/sqrt.go

package main

import (
	"fmt"
)

func Sqrt(x float64) float64 {
	z := 1.0;
	for count := 0; count < 10; count++ {
		z -= (z*z - x) / (2*z);
	}
	return z;
}

func main() {
	fmt.Println(Sqrt(2));
}