Remove mlab.exp_safe

dstansby · dstansby · commit 9aaf9fc5df4b · 2018-09-29T11:05:09.000+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
@@ -4,6 +4,7 @@ Removal of deprecated :mod:`matplotlib.mlab` code
 Lots of code inside the :mod:`matplotlib.mlab` module which was deprecated
 in Matplotlib 2.2 has been removed. See below for a list:
 
+- `mlab.exp_safe` (use numpy.exp instead)
 - `mlab.logspace` (use numpy.logspace 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
@@ -1247,30 +1247,6 @@ def movavg(x, n):
 """
 
 
-# *****************************************************************************
-# Globals
-# ****************************************************************************
-# function definitions
-exp_safe_MIN = math.log(2.2250738585072014e-308)
-exp_safe_MAX = 1.7976931348623157e+308
-
-
-@cbook.deprecated("2.2", 'numpy.exp')
-def exp_safe(x):
-    """
-    Compute exponentials which safely underflow to zero.
-
-    Slow, but convenient to use. Note that numpy provides proper
-    floating point exception handling with access to the underlying
-    hardware.
-    """
-
-    if type(x) is np.ndarray:
-        return np.exp(np.clip(x, exp_safe_MIN, exp_safe_MAX))
-    else:
-        return math.exp(x)
-
-
 @cbook.deprecated("2.2", alternative='numpy.array(list(map(...)))')
 def amap(fn, *args):
     """
diff --git a/lib/matplotlib/pylab.py b/lib/matplotlib/pylab.py
@@ -231,7 +231,6 @@
 from matplotlib.mlab import (
     amap, base_repr, binary_repr, csv2rec,
     demean, detrend, detrend_linear, detrend_mean, detrend_none,
-    exp_safe,
     frange,
     identity, ispower2, isvector, l1norm,
     l2norm, log2, movavg, norm_flat,
