Inaccurate Logarithm in Python

Question

I work daily with Python 2.4 at my company. I used the versatile logarithm function \'log\' from the standard math library, and when I entered log(2**31, 2) it returned 31.0

Answer 1

You should read "What Every Computer Scientist Should Know About Floating-Point Arithmetic".

http://docs.sun.com/source/806-3568/ncg_goldberg.html