Go suffers from this problem too. It uses an arbitrary number representation for constants only, which are computed at compile-time.

For example, the following code:

package main

import "fmt"

func main() {

    x := 14.4;
    y := 10.0;

    fmt.Printf("%.49f\n", x)
    fmt.Printf("%.49f\n", x+y-y)
}
[download]

14.4000000000000003552713678800500929355621337890625
14.3999999999999985789145284797996282577514648437500
[download]