fixup: Make sure fill value is a float before checking if it's == 0

Author: bojidar-bg

src/zarr/core/buffer/core.py

@@ -523,8 +523,12 @@ def all_equal(self, other: Any, equal_nan: bool = True) -> bool:
         if other is None:
             # Handle None fill_value for Zarr V2
             return False
-        if other == 0.0 and self._data.dtype.kind not in ("U", "S", "T", "O", "V"):
-            # Handle positive and negative zero by comparing bit patterns:
+        # Handle positive and negative zero by comparing bit patterns:
+        if (
+            np.array(other).dtype.kind == "f"
+            and other == 0.0
+            and self._data.dtype.kind not in ("U", "S", "T", "O", "V")
+        ):
             return np.array_equiv(np.array(self._data).view("V"), np.array(other).view("V"))
         # use array_equal to obtain equal_nan=True functionality
         # Since fill-value is a scalar, isn't there a faster path than allocating a new array for fill value