> > 0.9999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999
> > 999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999
> > 999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999
> > 999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999
> > 999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999
> 1にならないな

Don't Trust Floating Point Numbers

参考：2004/02/20(金)03時01分54秒