[issue11888] Add C99's log2() function to the math library

[STINNER Victor]

STINNER Victor <victor.stinner at haypocalc.com> added the comment:

By the way, issue11888.patch is just fine: you can commit it. I like your frexp "trick" to improve the accuracy.

----------

_______________________________________
Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue11888>
_______________________________________