note the point of having log2

eaee1385 · Benjamin Peterson · 6348f0ec · eaee1385
Commit eaee1385 authored May 08, 2011 by Benjamin Peterson
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Doc/library/math.rst Doc/library/math.rst +2 -1

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--- a/Doc/library/math.rst
+++ b/Doc/library/math.rst
@@ -186,7 +186,8 @@ Power and logarithmic functions

 .. function:: log2(x)

-   Return the base-2 logarithm of *x*.
+   Return the base-2 logarithm of *x*. This is usually more accurate than
+   ``log(x, 2)``.

   .. versionadded:: 3.3