Adrien Grand created LUCENE-7517:
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             Summary: Explore making Scorer.score() return a double
                 Key: LUCENE-7517
                 URL: https://issues.apache.org/jira/browse/LUCENE-7517
             Project: Lucene - Core
          Issue Type: Wish
            Reporter: Adrien Grand
            Priority: Minor


Follow-up to 
http://search-lucene.com/m/l6pAi1BoyPJ1vr2382&subj=Re+JENKINS+EA+Lucene+Solr+master+Linux+64bit+jdk+9+ea+140+Build+18103+Unstable+.

We could make Scorer.score() return a double in order to lose less accuracy 
when combining scores together, while still using floats on TopDocs and more 
generally all parts of the code that need to store scores.



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