postgres-github.git / summary / log / commit / refs

commit    d58ec50e0faae364fa59cdb88eba7e23b55ab583
Author:   Dean Rasheed <dean.a.rasheed@gmail.com>
Date:     Wed Jun 03 08:01:13 2026 +0000

    Improve overflow/underflow handling in regr_r2().
    
    Commit 6498287696d improved corr()'s final function to cope with
    overflow/underflow in the final calculation, and clamped its result to
    [-1, 1] in case of roundoff error. Improve regr_r2() in a similar way,
    clamping its result to [0, 1].
    
    Arguably this is a bug fix, but given the lack of prior complaints,
    refrain from back-patching, as we did with 6498287696d.
    
    Reported-by: Chengpeng Yan <chengpeng_yan@outlook.com>
    Author: Chengpeng Yan <chengpeng_yan@outlook.com>
    Reviewed-by: Dean Rasheed <dean.a.rasheed@gmail.com>
    Reviewed-by: Tom Lane <tgl@sss.pgh.pa.us>
    Discussion: https://postgr.es/m/33E01656-BB3B-46E9-A41F-24A01A7C35F4@outlook.com