On 2/8/07, William Stein <[EMAIL PROTECTED]> wrote: > I found it is as follows: (...)
Thanks for the pointers. > The approximate real number library mpfr that SAGE builds on defines > equality for approximate real numbers in SAGE. If you look at > the underlying binary representations of the above two numbers, > you'll see that they really are NOT equal, due to rounding errors: [snip] > GP/PARI, another piece of math software (included as part of SAGE), > also has this property: [snip] > So I'm not sure it's fair to say that "Sage does not handle > equality of reals very well". I apologize if it seemed that I was being negatively critical... It was not my intention. I do realize that it would be hard to keep track of all approximation errors. Best, Luis --~--~---------~--~----~------------~-------~--~----~ 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-support URLs: http://sage.math.washington.edu/sage/ and http://sage.scipy.org/sage/ -~----------~----~----~----~------~----~------~--~---
