wesm commented on a change in pull request #7507:
URL: https://github.com/apache/arrow/pull/7507#discussion_r513785728
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File path: cpp/src/arrow/array/util.h
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@@ -37,6 +37,11 @@ namespace arrow {
ARROW_EXPORT
std::shared_ptr<Array> MakeArray(const std::shared_ptr<ArrayData>& data);
+/// \brief Swap endian of each element in a generic ArrayData
+/// \param[in] data the array contents to be swapped
+ARROW_EXPORT
+void SwapEndianArrayData(std::shared_ptr<ArrayData>& data);
Review comment:
Also since this allocates memory it needs to be able to fail
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