From fae8369fba4a683783280b044915b11bbca07a44 Mon Sep 17 00:00:00 2001
From: Julian Taylor <jtaylor.debian@googlemail.com>
Date: Sun, 26 May 2013 17:03:51 +0200
Subject: ENH: implement may_share_memory in C

memmap needs to call it in __array_finalize__ to determine if it can
drop the references on copies.
The python version if may_share_memory caused significant slowdowns when
slicing these maps.

closes gh-3364
---
 numpy/core/numeric.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

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

diff --git a/numpy/core/numeric.py b/numpy/core/numeric.py
index a187d7c5b..bb2f3d28d 100644
--- a/numpy/core/numeric.py
+++ b/numpy/core/numeric.py
@@ -40,7 +40,7 @@ __all__ = ['newaxis', 'ndarray', 'flatiter', 'nditer', 'nested_iters', 'ufunc',
            'Inf', 'inf', 'infty', 'Infinity',
            'nan', 'NaN', 'False_', 'True_', 'bitwise_not',
            'CLIP', 'RAISE', 'WRAP', 'MAXDIMS', 'BUFSIZE', 'ALLOW_THREADS',
-           'ComplexWarning']
+           'ComplexWarning', 'may_share_memory']
 
 if sys.version_info[0] < 3:
     __all__.extend(['getbuffer', 'newbuffer'])
@@ -252,6 +252,7 @@ fromstring = multiarray.fromstring
 fromiter = multiarray.fromiter
 fromfile = multiarray.fromfile
 frombuffer = multiarray.frombuffer
+may_share_memory = multiarray.may_share_memory
 if sys.version_info[0] < 3:
     newbuffer = multiarray.newbuffer
     getbuffer = multiarray.getbuffer
-- 
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