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https://issues.apache.org/jira/browse/ARROW-7011?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17089080#comment-17089080
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Jacek Pliszka commented on ARROW-7011:
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Would it be enough to:
multiply by 10**scale, cast to integer, cast to decimal128, corect the scale ?
> [C++] Implement casts from float/double to decimal128
> -----------------------------------------------------
>
> Key: ARROW-7011
> URL: https://issues.apache.org/jira/browse/ARROW-7011
> Project: Apache Arrow
> Issue Type: New Feature
> Components: C++
> Reporter: Wes McKinney
> Priority: Major
>
> see also ARROW-5905, ARROW-7010
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