kou commented on PR #34919:
URL: https://github.com/apache/arrow/pull/34919#issuecomment-1501420706

   @anthonylouisbsb @projjal @praveenbingo You changed our vendored 
double-conversion in #9816. Is the change still needed?
   
   Some Gandiva tests failed by upgrading vendored double-conversion (the 
change is revered): 
   
   
https://ci.appveyor.com/project/ApacheSoftwareFoundation/arrow/builds/46724699#L2520
   
   ```text
   [ RUN      ] TestGdvFnStubs.TestCastVARCHARFromFloat
   C:/projects/arrow/cpp/src/gandiva/gdv_function_stubs_test.cc(400): error: 
Expected equality of these values:
     std::string(out_str, out_len)
       Which is: "1E-5"
     "1.0E-5"
   [  FAILED  ] TestGdvFnStubs.TestCastVARCHARFromFloat (0 ms)
   [ RUN      ] TestGdvFnStubs.TestCastVARCHARFromDouble
   C:/projects/arrow/cpp/src/gandiva/gdv_function_stubs_test.cc(435): error: 
Expected equality of these values:
     std::string(out_str, out_len)
       Which is: "1E-5"
     "1.0E-5"
   [  FAILED  ] TestGdvFnStubs.TestCastVARCHARFromDouble (0 ms)
   ```
   
   If you really need the change, could you improve double-conversion in 
upstream instead of changing vendored double-conversion.


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