Mark Dickinson <dicki...@gmail.com> added the comment: > In Python, exp2(x) can be spelled 2.0**x. What would exp2(x) gain us?
Not much, I suspect. :) I'd expect (but am mostly guessing) exp2(x) to have better accuracy than pow(2.0, x) for some math libraries; I'd further guess that it's somewhat more likely to give exact results for (small) integral x. Similarly for log2: log2(n) should be a touch more accurate than log(n)/log(2), and the time you're most likely to notice the difference is when n is an exact power of 2. But we've already got the 'bit_length' method for integers, which fills some of the potential uses for log2. So unless there's a feeling that these functions are needed, I'd rather leave them out. ---------- _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue3366> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
