Google the general question of why you should never use binary floating point (double or float) for currency calculations.
e.g.: http://stackoverflow.com/questions/3730019/why-not-use-double-or-float-to-represent-currency On Tuesday, January 12, 2016 at 3:28:31 AM UTC-8, Frank wrote: > > Javascript has some serious problems when working with floating numbers. > > Like if you enter the following into a javascript in any browser : 7.3 - 7 > These will all give the result : 0.2999999999999998 > > > 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 > > > How does one avoid these problems in GWT, so that you can trust on the > results you receive when calculating with floating point numbers ? > > > > FYI : The specific use case that I have is that users enter a time in > decimals hours in a textbox. And I must recalculate this to minutes. > For example when the user enters 7.5, this should give 450 minutes. > But with all these rounding problems this often goes of by one minute... > -- You received this message because you are subscribed to the Google Groups "GWT Users" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at https://groups.google.com/group/google-web-toolkit. For more options, visit https://groups.google.com/d/optout.
