Best way to divide floats-CodePudding

I'm working on a REST API that syncs client with the server's time to keep the client in sync and avoid any connection issues. I encountered this issue while dividing floats (I was doing server time (epoch) calculations):

1672866847.265 (208420 / 1000) results in 1672867055.6850002 (which I know is IEEE 754)

mean while according to Google's calculator, it should be 1672867055.69

Is there a way to solve this issue?

CodePudding user response：

You can use toFixed(2) to get 2 decimal points:

console.log((1672866847.265 208420 / 1000).toFixed(2));

CodePudding user response：

If you want your result to be more reliable try first multiplying

console.log(1672866847.265   (208420 / 1000))
console.log((1672866847.265 * 1000   208420) / 1000)

You can also use a library

console.log(new Big(1672866847.265).plus(new Big(208420).div(1000)).toNumber())

<script src='https://cdn.jsdelivr.net/npm/[email protected]/big.min.js'></script>

CodePudding user response：

You can use round to avoid decimal values -

Math.round(1672867055.6850002);  // ans will be: 1672867056

To get value with two decimal point, you can mupltiply it by 100 and then divid it by 100

Math.round(1672867055.6850002 * 100)/100;   // ans will be: 1672867055.69