On Thu, May 21, 2009 at 8:19 PM, Gary Herron <gher...@islandtraining.com> wrote: > MRAB wrote: >> >> Grant Edwards wrote: >>> >>> On 2009-05-21, Christian Heimes <li...@cheimes.de> wrote: >>>> >>>> seanm...@gmail.com schrieb: >>>>> >>>>> The explaination in my introductory Python book is not very >>>>> satisfying, and I am hoping someone can explain the following to me: >>>>> >>>>>>>> 4 / 5.0 >>>>> >>>>> 0.80000000000000004 >>>>> >>>>> 4 / 5.0 is 0.8. No more, no less. So what's up with that 4 at the end. >>>>> It bothers me. >>>> >>>> Welcome to IEEE 754 floating point land! :) >>>
FYI you can explore the various possible IEEE-style implementations with my python simulator of arbitrary floating or fixed precision numbers: http://www2.gsu.edu/~matrhc/binary.html -- http://mail.python.org/mailman/listinfo/python-list
