On May 21, 3:22 pm, Marc Christiansen <[EMAIL PROTECTED]> wrote: > On my system, it works: > > Python 2.5.2 (r252:60911, May 21 2008, 18:49:26) > [GCC 4.1.2 (Gentoo 4.1.2 p1.0.2)] on linux2 > Type "help", "copyright", "credits" or "license" for more information. > >>> a = 1e16 - 2.; a > 9999999999999998.0 > >>> a + 0.9999 > 9999999999999998.0 > > Marc
Thanks for all the replies! It's good to know that it's not just me. :-) After a bit (well, quite a lot) of Googling, it looks as though this might be known problem with gcc on older Intel processors: those using an x87-style FPU instead of SSE2 for floating-point. This gcc 'bug' looks relevant: http://gcc.gnu.org/bugzilla/show_bug.cgi?id=323 Now that I've got confirmation I'll open a Python bug report: it's not clear how to fix this, or whether it's worth fixing, but it seems like something that should be documented somewhere... Thanks again, everyone! Mark -- http://mail.python.org/mailman/listinfo/python-list
