fixing tests for windows: not using native 'L', but standard '=Q' as format string

Author: realead

pandas/tests/test_algos.py

@@ -1100,8 +1100,10 @@ def test_add_signed_zeros(self):
 
     def test_add_different_nans(self):
         # create different nans from bit-patterns:
-        NAN1 = struct.unpack("d", struct.pack("L", 0x7ff8000000000000))[0]
-        NAN2 = struct.unpack("d", struct.pack("L", 0x7ff8000000000001))[0]
+        NAN1 = struct.unpack("d", struct.pack("=Q", 0x7ff8000000000000))[0]
+        NAN2 = struct.unpack("d", struct.pack("=Q", 0x7ff8000000000001))[0]
+        assert NAN1 != NAN1
+        assert NAN2 != NAN2
         # default hash function would lead to different hash-buckets
         # for NAN1 and NAN2 even if there are only 4 buckets:
         m = ht.Float64HashTable()