Mark Dickinson <dicki...@gmail.com> added the comment: Also, prec_log would need significant work to make it handle all the corner cases sensibly. For example:
Python 3.6.3 (default, Oct 5 2017, 23:34:28) [GCC 4.2.1 Compatible Apple LLVM 8.1.0 (clang-802.0.42)] on darwin Type "help", "copyright", "credits" or "license" for more information. >>> import math >>> def prec_log(x, y): ... a = math.log(x, y) ... return a + math.log(x / math.pow(y, a), y) ... >>> math.log(3**1000, 3) 999.9999999999999 >>> prec_log(3**1000, 3) Traceback (most recent call last): File "<stdin>", line 1, in <module> File "<stdin>", line 3, in prec_log OverflowError: math range error ---------- _______________________________________ Python tracker <rep...@bugs.python.org> <https://bugs.python.org/issue31980> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
