From c251a51022117fe3a104be8e35b084c7de7205fb Mon Sep 17 00:00:00 2001
From: Tyler Reddy <tyler.je.reddy@gmail.com>
Date: Wed, 2 Jan 2019 16:07:22 -0800
Subject: BUG: NaT now sorts to end of arrays

* added unit tests for NaT sorting
to the ends of arrays

* NaT now treated as largest integer
for sorting purposes, so that it sorts
to end of arrays for consistency with
NaN
---
 numpy/core/fromnumeric.py | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'numpy/core/fromnumeric.py')

diff --git a/numpy/core/fromnumeric.py b/numpy/core/fromnumeric.py
index 6e5f3dabf..d454480a8 100644
--- a/numpy/core/fromnumeric.py
+++ b/numpy/core/fromnumeric.py
@@ -944,6 +944,10 @@ def sort(a, axis=-1, kind=None, order=None):
     'mergesort' and 'stable' are mapped to radix sort for integer data types. Radix sort is an
     O(n) sort instead of O(n log n).
 
+    .. versionchanged:: 1.17.0
+
+    NaT now sorts to the end of arrays for consistency with NaN.
+
     Examples
     --------
     >>> a = np.array([[1,4],[3,1]])
-- 
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