package main

import "fmt"

func main() {
	fmt.Printf("%.49f\n",14.4)
	fmt.Printf("%.49f\n", 10+14.4-10)
}
---------
14.4000000000000003552713678800500929355621337890625
14.4000000000000003552713678800500929355621337890625

Program exited.