Hi Cristea, > Is this a bug of the compiler...? No. Certain optimizations can exacerbate code that poorly accommodates float peculiarities. > ...or the floating point representation differs from one compiler version to the other? No, not the representation. Probably the calculation. The problem is one-or-both of: + not all hardware is compliant with IEEE 754 calculations + not all code is written carefully to accommodate float peculiarities Please read the article What Every Computer Scientist Should Know About Floating-Point Arithmetic, by David Goldberg (1991). http://docs.sun.com/source/806-3568/ncg_goldberg.html HTH, --Eljay
