RFR: 8361213: J2DAnalyzer should emit the score as a decimal

[Eric Caspole]

On Tue, 1 Jul 2025 20:52:50 GMT, Jonas Norlinder <duke at openjdk.org> wrote:

>> As mentioned in the bug, I think it would be better to always emit the score as decimal instead of sometimes decimal, sometimes scientific notation.
>
> src/demo/share/java2d/J2DBench/src/j2dbench/report/J2DAnalyzer.java line 273:
> 
>> 271:                 double overallscore = totalscore[i]/numtests[i];
>> 272:                 System.out.println("    Number of tests:  "+numtests[i]);
>> 273:                 System.out.printf("    Overall average:  %10.4f%n", overallscore);
> 
> double overallscore = 2.4322;
>         System.out.println("    Overall average:  "+overallscore); // before
>         System.out.printf("    Overall average:  %20.4f%n", overallscore); // after
> 
> 
> leads to
> 
>     Overall average:  2.4322 // before
>     Overall average:                2.4322 // after
> 
> 
> should it be a fixed 10 width here?

I am not sure what you mean, but with the 10, the scores line up with the rest of the minor stats when it is monospace font like this example -


Summary:
  vimg_text_noaa: 
    Number of tests:  2
    Overall average:  20002.7449
    Best spread:      1.3% variance
    Worst spread:     3.62% variance
    (Basis for results comparison)

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PR Review Comment: https://git.openjdk.org/jdk/pull/26076#discussion_r2180257723