zarr-developers · alimanfoo · Nov 23, 2018 · Nov 21, 2018 · Nov 21, 2018 · Nov 21, 2018
diff --git a/docs/release.rst b/docs/release.rst
@@ -29,6 +29,9 @@ Release notes
 * Add codec :class:`numcodecs.gzip.GZip` to replace ``gzip`` alias for ``zlib``,
   which was incorrect (by :user:`Jan Funke <funkey>`; :issue:`87`).
 
+* Corrects handling of ``NaT`` in ``datetime64`` and ``timedelta64`` in various
+  compressors (by :user:`John Kirkham <jakirkham>`; :issue:`127`).
+
 .. _release_0.5.5:
 
 0.5.5

diff --git a/fixture/blosc/array.09.npy b/fixture/blosc/array.09.npy
diff --git a/fixture/blosc/array.10.npy b/fixture/blosc/array.10.npy
diff --git a/fixture/blosc/array.11.npy b/fixture/blosc/array.11.npy
diff --git a/fixture/blosc/array.12.npy b/fixture/blosc/array.12.npy
diff --git a/fixture/blosc/codec.00/encoded.09.dat b/fixture/blosc/codec.00/encoded.09.dat
diff --git a/fixture/blosc/codec.00/encoded.10.dat b/fixture/blosc/codec.00/encoded.10.dat
diff --git a/fixture/blosc/codec.00/encoded.11.dat b/fixture/blosc/codec.00/encoded.11.dat
diff --git a/fixture/blosc/codec.00/encoded.12.dat b/fixture/blosc/codec.00/encoded.12.dat
diff --git a/fixture/blosc/codec.01/encoded.09.dat b/fixture/blosc/codec.01/encoded.09.dat
diff --git a/fixture/blosc/codec.01/encoded.10.dat b/fixture/blosc/codec.01/encoded.10.dat
diff --git a/fixture/blosc/codec.01/encoded.11.dat b/fixture/blosc/codec.01/encoded.11.dat
diff --git a/fixture/blosc/codec.01/encoded.12.dat b/fixture/blosc/codec.01/encoded.12.dat
diff --git a/fixture/blosc/codec.02/encoded.09.dat b/fixture/blosc/codec.02/encoded.09.dat
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diff --git a/fixture/bz2/array.09.npy b/fixture/bz2/array.09.npy
diff --git a/fixture/bz2/array.10.npy b/fixture/bz2/array.10.npy
diff --git a/fixture/bz2/array.11.npy b/fixture/bz2/array.11.npy
diff --git a/fixture/bz2/array.12.npy b/fixture/bz2/array.12.npy
diff --git a/fixture/bz2/codec.00/encoded.09.dat b/fixture/bz2/codec.00/encoded.09.dat
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diff --git a/fixture/bz2/codec.02/encoded.09.dat b/fixture/bz2/codec.02/encoded.09.dat
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diff --git a/fixture/bz2/codec.03/encoded.12.dat b/fixture/bz2/codec.03/encoded.12.dat
diff --git a/fixture/gzip/array.09.npy b/fixture/gzip/array.09.npy
diff --git a/fixture/gzip/array.10.npy b/fixture/gzip/array.10.npy
diff --git a/fixture/gzip/array.11.npy b/fixture/gzip/array.11.npy
diff --git a/fixture/gzip/array.12.npy b/fixture/gzip/array.12.npy
diff --git a/fixture/gzip/codec.00/encoded.09.dat b/fixture/gzip/codec.00/encoded.09.dat
diff --git a/fixture/gzip/codec.00/encoded.10.dat b/fixture/gzip/codec.00/encoded.10.dat
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diff --git a/fixture/lz4/array.09.npy b/fixture/lz4/array.09.npy
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diff --git a/fixture/zstd/codec.03/encoded.09.dat b/fixture/zstd/codec.03/encoded.09.dat
diff --git a/fixture/zstd/codec.03/encoded.10.dat b/fixture/zstd/codec.03/encoded.10.dat
diff --git a/fixture/zstd/codec.03/encoded.11.dat b/fixture/zstd/codec.03/encoded.11.dat
diff --git a/fixture/zstd/codec.03/encoded.12.dat b/fixture/zstd/codec.03/encoded.12.dat
diff --git a/fixture/zstd/codec.04/encoded.09.dat b/fixture/zstd/codec.04/encoded.09.dat
diff --git a/fixture/zstd/codec.04/encoded.10.dat b/fixture/zstd/codec.04/encoded.10.dat
diff --git a/fixture/zstd/codec.04/encoded.11.dat b/fixture/zstd/codec.04/encoded.11.dat
diff --git a/fixture/zstd/codec.04/encoded.12.dat b/fixture/zstd/codec.04/encoded.12.dat
diff --git a/fixture/zstd/codec.05/encoded.09.dat b/fixture/zstd/codec.05/encoded.09.dat
diff --git a/fixture/zstd/codec.05/encoded.10.dat b/fixture/zstd/codec.05/encoded.10.dat
diff --git a/fixture/zstd/codec.05/encoded.11.dat b/fixture/zstd/codec.05/encoded.11.dat
diff --git a/fixture/zstd/codec.05/encoded.12.dat b/fixture/zstd/codec.05/encoded.12.dat
diff --git a/fixture/zstd/codec.06/encoded.09.dat b/fixture/zstd/codec.06/encoded.09.dat
diff --git a/fixture/zstd/codec.06/encoded.10.dat b/fixture/zstd/codec.06/encoded.10.dat
diff --git a/fixture/zstd/codec.06/encoded.11.dat b/fixture/zstd/codec.06/encoded.11.dat
diff --git a/fixture/zstd/codec.06/encoded.12.dat b/fixture/zstd/codec.06/encoded.12.dat
diff --git a/numcodecs/compat.py b/numcodecs/compat.py
@@ -102,5 +102,5 @@ def ensure_text(l, encoding='utf-8'):
 
 def handle_datetime(buf):
     if hasattr(buf, 'dtype') and buf.dtype.kind in 'Mm':
-        return buf.view('u8')
+        return buf.view('i8')
     return buf
diff --git a/numcodecs/compat_ext.c b/numcodecs/compat_ext.c
diff --git a/numcodecs/compat_ext.pyx b/numcodecs/compat_ext.pyx
@@ -21,7 +21,7 @@ cdef class Buffer:
         self.released = False
         if hasattr(obj, 'dtype'):
             if obj.dtype.kind in 'Mm':
-                obj = obj.view('u8')
+                obj = obj.view('i8')
             elif obj.dtype.kind == 'O':
                 raise ValueError('cannot obtain buffer from object array')
         if PY2 and isinstance(obj, array.array):

diff --git a/numcodecs/tests/test_blosc.py b/numcodecs/tests/test_blosc.py
@@ -47,6 +47,10 @@
     np.random.randint(0, 2**60, size=1000, dtype='u8').view('m8[ns]'),
     np.random.randint(0, 2**25, size=1000, dtype='u8').view('M8[m]'),
     np.random.randint(0, 2**25, size=1000, dtype='u8').view('m8[m]'),
+    (-np.random.randint(-2**30, 2**30, size=1000, dtype='i8')).view('M8[ns]'),
+    (-np.random.randint(-2**30, 2**30, size=1000, dtype='i8')).view('m8[ns]'),
+    (-np.random.randint(-2**12, 2**13, size=1000, dtype='i8')).view('M8[m]'),
+    (-np.random.randint(-2**12, 2**13, size=1000, dtype='i8')).view('m8[m]'),
 ]
 
 

diff --git a/numcodecs/tests/test_bz2.py b/numcodecs/tests/test_bz2.py
@@ -34,6 +34,10 @@
     np.random.randint(0, 2**60, size=1000, dtype='u8').view('m8[ns]'),
     np.random.randint(0, 2**25, size=1000, dtype='u8').view('M8[m]'),
     np.random.randint(0, 2**25, size=1000, dtype='u8').view('m8[m]'),
+    (-np.random.randint(-2**30, 2**30, size=1000, dtype='i8')).view('M8[ns]'),
+    (-np.random.randint(-2**30, 2**30, size=1000, dtype='i8')).view('m8[ns]'),
+    (-np.random.randint(-2**12, 2**13, size=1000, dtype='i8')).view('M8[m]'),
+    (-np.random.randint(-2**12, 2**13, size=1000, dtype='i8')).view('m8[m]'),
 ]
 
 

diff --git a/numcodecs/tests/test_gzip.py b/numcodecs/tests/test_gzip.py
@@ -36,6 +36,10 @@
     np.random.randint(0, 2**60, size=1000, dtype='u8').view('m8[ns]'),
     np.random.randint(0, 2**25, size=1000, dtype='u8').view('M8[m]'),
     np.random.randint(0, 2**25, size=1000, dtype='u8').view('m8[m]'),
+    (-np.random.randint(-2**30, 2**30, size=1000, dtype='i8')).view('M8[ns]'),
+    (-np.random.randint(-2**30, 2**30, size=1000, dtype='i8')).view('m8[ns]'),
+    (-np.random.randint(-2**12, 2**13, size=1000, dtype='i8')).view('M8[m]'),
+    (-np.random.randint(-2**12, 2**13, size=1000, dtype='i8')).view('m8[m]'),
 ]
 
 

diff --git a/numcodecs/tests/test_lz4.py b/numcodecs/tests/test_lz4.py
@@ -37,6 +37,10 @@
     np.random.randint(0, 2**60, size=1000, dtype='u8').view('m8[ns]'),
     np.random.randint(0, 2**25, size=1000, dtype='u8').view('M8[m]'),
     np.random.randint(0, 2**25, size=1000, dtype='u8').view('m8[m]'),
+    (-np.random.randint(-2**30, 2**30, size=1000, dtype='i8')).view('M8[ns]'),
+    (-np.random.randint(-2**30, 2**30, size=1000, dtype='i8')).view('m8[ns]'),
+    (-np.random.randint(-2**12, 2**13, size=1000, dtype='i8')).view('M8[m]'),
+    (-np.random.randint(-2**12, 2**13, size=1000, dtype='i8')).view('m8[m]'),
 ]
 
 

diff --git a/numcodecs/tests/test_lzma.py b/numcodecs/tests/test_lzma.py
@@ -42,6 +42,10 @@
     np.random.randint(0, 2**60, size=1000, dtype='u8').view('m8[ns]'),
     np.random.randint(0, 2**25, size=1000, dtype='u8').view('M8[m]'),
     np.random.randint(0, 2**25, size=1000, dtype='u8').view('m8[m]'),
+    (-np.random.randint(-2**30, 2**30, size=1000, dtype='i8')).view('M8[ns]'),
+    (-np.random.randint(-2**30, 2**30, size=1000, dtype='i8')).view('m8[ns]'),
+    (-np.random.randint(-2**12, 2**13, size=1000, dtype='i8')).view('M8[m]'),
+    (-np.random.randint(-2**12, 2**13, size=1000, dtype='i8')).view('m8[m]'),
 ]
 
 

diff --git a/numcodecs/tests/test_zlib.py b/numcodecs/tests/test_zlib.py
@@ -36,6 +36,10 @@
     np.random.randint(0, 2**60, size=1000, dtype='u8').view('m8[ns]'),
     np.random.randint(0, 2**25, size=1000, dtype='u8').view('M8[m]'),
     np.random.randint(0, 2**25, size=1000, dtype='u8').view('m8[m]'),
+    (-np.random.randint(-2**30, 2**30, size=1000, dtype='i8')).view('M8[ns]'),
+    (-np.random.randint(-2**30, 2**30, size=1000, dtype='i8')).view('m8[ns]'),
+    (-np.random.randint(-2**12, 2**13, size=1000, dtype='i8')).view('M8[m]'),
+    (-np.random.randint(-2**12, 2**13, size=1000, dtype='i8')).view('m8[m]'),
 ]
 
 

diff --git a/numcodecs/tests/test_zstd.py b/numcodecs/tests/test_zstd.py
@@ -37,6 +37,10 @@
     np.random.randint(0, 2**60, size=1000, dtype='u8').view('m8[ns]'),
     np.random.randint(0, 2**25, size=1000, dtype='u8').view('M8[m]'),
     np.random.randint(0, 2**25, size=1000, dtype='u8').view('m8[m]'),
+    (-np.random.randint(-2**30, 2**30, size=1000, dtype='i8')).view('M8[ns]'),
+    (-np.random.randint(-2**30, 2**30, size=1000, dtype='i8')).view('m8[ns]'),
+    (-np.random.randint(-2**12, 2**13, size=1000, dtype='i8')).view('M8[m]'),
+    (-np.random.randint(-2**12, 2**13, size=1000, dtype='i8')).view('m8[m]'),
 ]