On Feb 10, 2007, at 9:40 PM, Carl Witty wrote:
> Some IEEE doubles are exact -- you can't tell just by looking at it > whether a value of 0.5 is intended to be exact or approximate. True. Can I check I understand the point of real interval arithmetic. I've never done any computational work with such objects, and generally I even stay away from floating point like the plague :-). I presume the idea is that you take some algorithm which normally operates on reals, and you would like to be able to just "run it" on real intervals instead, so that if you have some idea of the error in your input data then the system automatically gives you proven error bounds in the output. Is that the basic idea? I take it the whole real interval thing is not just some academic curiosity. David --~--~---------~--~----~------------~-------~--~----~ To post to this group, send email to [email protected] To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/sage-devel URLs: http://sage.scipy.org/sage/ and http://modular.math.washington.edu/sage/ -~----------~----~----~----~------~----~------~--~---
