On 2021-09-02, 18:11, "Gilles Sadowski" <gillese...@gmail.com> wrote:
WARNING - External email; exercise caution.
Le jeu. 2 sept. 2021 à 16:30, Erik Svensson <erik.svens...@nasdaq.com> a
écrit :
>
> Hi!
>
>
>
> I’ve implemented profiles, where you can choose to use either
AccurateMath or jlM and it works on j8.
Can you provide a link to the code?
https://github.com/perf-coder/commons-math/tree/math-profiles-j8-am
My changes are all in org.apache.commons.math4.legacy.core
The MathProfile.java API might warrant some work.
The MathProfile static block will check for a property (currently
org.apache.commons.math.provider ) which can have JDK_MATH as optional value.
All other values will default to AM as math provider.
For java 8, the code builds just fine and works as intended. For java versions
> 8, it will not build since AM doesn't implement all methods in StrictMath (or
so the tests say anyway).
NB that the code is not release-ready. I need to add doc:s.
Cheers
Erik Svensson
> Building on later versions of the jdk fails on the
AccurateMathTest.checkMissingAccurateMathClasses test (not surprise there).
>
> I can implement the missing methods using the same algorithms as OpenJDK,
Do you mean copying (Java?) code that is maintained somewhere else?
> we can remove the test or maybe something else?
Perhaps refactor the test using assumptions.[1]
> The second alternative depends on if AccurateMath is going to keep on
being a drop-in replacement for jlM.
"FastMath" was a rewrite of the functions defined in "java.lang.Math"
as of Java 8.
Its usefulness was in the implementations being equally or more
accurate and sometimes faster (on Java 5).
As mentioned in another thread, we should know whether that's still
the case in environments where the upcoming version of CM could
potentially be used.
>
> How do you guys want to play this?
>
[1]
https://junit.org/junit5/docs/current/user-guide/#writing-tests-assumptions
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