You can have a look to BigDecimal, and some 3rd party libraries like gmp (there are java bindings). But JavaEE isnt linked to that at all.
Le 13 mars 2018 05:58, "David Jencks" <david.a.jen...@gmail.com> a écrit : > As Romain said in response to your previous question, the capabilities > provided as part of any software implemented on top of the jre, such as > tomee or openejb, don’t affect arithmetic operations in the jre in any way. > After carefully analyzing your actual needs you might investigate the > BigInteger and BigDecimal classes to see if they will support whatever you > are trying to do. I don’t think you will find any way to exactly model the > set of real numbers, rational numbers, or even integers on any computer > built now or in the future. > > Btw while not an expert I don’t think your example illustrates overflow of > underflow but rather that decimal fractions can’t be converted accurately > to finite binary fractions. This is why eg cobol used binary coded decimal. > > David Jencks > Sent from my iPhone > > > On Mar 12, 2018, at 8:37 PM, A Z <powerus...@live.com.au> wrote: > > > > -Do floats and doubles in TomEE, as well as in OpenEJB, > > > > still have the same floating point overflow and underflow > > > > arithmetic phenomena as in Java Standard Edition? > > > > > > -I refer to the following kind of phenomonen: > > > > > > Double a = 0.1; > > > > > > Double b = 0.1; > > > > > > Double x = a*b; > > > > > > out.println(x == 0.01); //actually prints false. > > > > > > > > -Do TomEE or OpenEJB have some option to get > > > > rid of overflow and underflow entirely, by means of some kind > > > > of option? If so, what is that? > > > > > > >
