Slider issues in qt 5.8

[vishu_fcb]

I am using QT 5.8 , in which i am using the library qt quick controls 2.1
I am facing a wierd issue , when i try to access the slider value at 3.5 , it is dislaying it in recurring as 3.49999999999 and same is the issue at value 7 which is displaying as 6.99999999999999
I just wanted to know if its library issues ??
How can i resolve it ???

[jpnurmi]

Text {
    text: slider.value.toFixed(1)
}