On Thu, 19 Feb 2026 17:20:14 GMT, Michael Strauß <[email protected]> wrote:

>> modules/javafx.graphics/src/main/java/com/sun/javafx/css/parser/CssNumberParser.java
>>  line 304:
>> 
>>> 302:      * @see <a href="https://arxiv.org/pdf/2101.11408";>Number Parsing 
>>> at a Gigabyte per Second</a>
>>> 303:      */
>>> 304:     private static final long[] T = new long[] {
>> 
>> Warning about a large binary blob of unknown origin in the source.
>> 
>> I suggest we do two things here:
>> 1. add a comment explaining what it is and how it is computed in general 
>> terms
>> 2. provide the code that generates it, so it can be reviewed at the source 
>> level.  For example, it might be in a form of a unit test which generates 
>> the array and compares it to the one here.
>
> I think the comment already explains what it is, including a link to a script 
> that generates it. The script itself is now in the `powersOfFive()` unit test.

you are right.  do you think it would make sense to point to the code (test) 
that generates the table in the comment?

>> modules/javafx.graphics/src/test/java/test/com/sun/javafx/css/parser/CssNumberParserTest.java
>>  line 234:
>> 
>>> 232:             double expected = Double.parseDouble(number);
>>> 233:             double actual = parseDouble(number);
>>> 234:             assertEquals(Double.doubleToRawLongBits(expected), 
>>> Double.doubleToRawLongBits(actual));
>> 
>> would it be possible in these fuzzing tests (which are great, by the way!) 
>> add a check for a few values adjacent to each point (i.e. +1 ulp, +2 ulp, -1 
>> ulp, -2 ulp)?
>
> For what purpose? The numbers are already random, adding or subtracting a bit 
> doesn't change that.

to ensure the behavior of adjacent values, as it is not covered just by the 
random numbers (what is the probability of selecting two adjacent random 
values?)

-------------

PR Review Comment: https://git.openjdk.org/jfx/pull/2069#discussion_r2829603130
PR Review Comment: https://git.openjdk.org/jfx/pull/2069#discussion_r2829593218

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