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Posted to jira@arrow.apache.org by "Yibo Cai (Jira)" <ji...@apache.org> on 2021/07/23 02:15:00 UTC

[jira] [Created] (ARROW-13439) [C++] Unify BasicDecimal128 and BasicDecimal256 classes

Yibo Cai created ARROW-13439:
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             Summary: [C++] Unify BasicDecimal128 and BasicDecimal256 classes
                 Key: ARROW-13439
                 URL: https://issues.apache.org/jira/browse/ARROW-13439
             Project: Apache Arrow
          Issue Type: Improvement
          Components: C++
            Reporter: Yibo Cai


BasicDecimal128 uses two dedicated int64 (higher, lower) to store the value. It's possible to use std::array<uint64, 2> to store the value, just like BasicDecimal256 does, and to unify the two classes.
As decimal operations are quite expensive, guess this indirection won't cause performance loss.



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