Re: How to avoid rounding problems when working with doubles

Hi

Javascript has some serious problems when working with floating numbers.

Javascript has no serious problems when working with floating numbers

 

Like if you enter the following into a javascript in any browser : 7.3 - 7

There is not such number 7.3 in floating point.

 

These will all give the result : 0.2999999999999998

This is a string, not the result of "-" operation.

Which problem ?

 

This problems is also visible in GWT : 

int test = 7;

double dTest = 7.3;

double result = dTest - test;

GWT.log("test result = " + result);

will also print out 0.2999999999999998

Again, there is not such number 7.3 in double precision. 

 

How does one avoid these problems in GWT, so that you can trust on the results you receive when calculating with floating point numbers ?

Which problems ? 

 

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