Remove mlab.ispower2

dstansby · dstansby · commit a934ad8d7e24 · 2018-09-29T11:05:10.000+01:00
diff --git a/doc/api/next_api_changes/2018-09-18-DS.rst b/doc/api/next_api_changes/2018-09-18-DS.rst
@@ -15,6 +15,7 @@ in Matplotlib 2.2 has been removed. See below for a list:
 - `mlab.identity` (use numpy.identity instead)
 - `mlab.base_repr`
 - `mlab.binary_repr`
+- `mlab.ispower2`
 - `mlab.log2` (use numpy.log2 instead)
 - `mlab.cohere_pairs` (use scipy.signal.coherence instead)
 - `mlab.entropy` (use scipy.stats.entropy instead)
diff --git a/lib/matplotlib/mlab.py b/lib/matplotlib/mlab.py
@@ -1247,21 +1247,6 @@ def movavg(x, n):
 """
 
 
-@cbook.deprecated("2.2")
-def ispower2(n):
-    """
-    Returns the log base 2 of *n* if *n* is a power of 2, zero otherwise.
-
-    Note the potential ambiguity if *n* == 1: 2**0 == 1, interpret accordingly.
-    """
-
-    bin_n = binary_repr(n)[1:]
-    if '1' in bin_n:
-        return 0
-    else:
-        return len(bin_n)
-
-
 @cbook.deprecated("2.2")
 def isvector(X):
     """
diff --git a/lib/matplotlib/pylab.py b/lib/matplotlib/pylab.py
@@ -231,7 +231,7 @@
 from matplotlib.mlab import (
     csv2rec,
     demean, detrend, detrend_linear, detrend_mean, detrend_none,
-    ispower2, isvector,
+    isvector,
     movavg,
     window_hanning, window_none)
 
