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Fixed issue causing logarithm of base 0 to not give either of the possible correct answers. #39547

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9 changes: 8 additions & 1 deletion src/sage/misc/functional.py
Original file line number Diff line number Diff line change
Expand Up @@ -1148,9 +1148,16 @@ def log(*args, **kwds):
-Infinity
sage: log(int(0), 1/2)
+Infinity

Check if sub-issue detailed in :issue:`38971` is fixed::

sage: log(6, base=0)
0
sage: log(e, base=0)
0
"""
base = kwds.pop('base', None)
if base:
if base is not None:
args = args + (base,)
if not args:
raise TypeError("log takes at least 1 arguments (0 given)")
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