On Wed, 18 Sep 2024 14:22:16 GMT, Emanuel Peter <epe...@openjdk.org> wrote:

> > > Do we have tests for the publically exposed methods in this new file? Or 
> > > are they only implicitly tested through the VectorAPI, and its tests? 
> > > `src/jdk.incubator.vector/share/classes/jdk/incubator/vector/VectorMath.java`
> > > Why is this even called `VectorMath`? Because those ops are not at all 
> > > restricted to vectorization, right?
> > 
> > 
> > Nomenclature is suggested by Paul.
> 
> @PaulSandoz Do you want to limit these **scalar** operations to a class name 
> that implies **vector** use?
> 
> > We have sufficient test coverage of these APIs in JTREG tests.
> 
> @jatin-bhateja I can't see any dedicated JTREG tests to the `VectorMath` 
> methods. I only see the VectorAPI tests. Can you point me to the `VectorMath` 
> tests? I'd like to review them.

Hi @eme64 , @PaulSandoz  
Yes dedicated test for each of newly added VectorMath operation is justified 
here.

Thanks, let me know if there are other comments.

 

> > > > > Why is this even called `VectorMath`? Because those ops are not at 
> > > > > all restricted to vectorization, right?
> > > > 
> > > > 
> > > > Nomenclature is suggested by Paul.
> > > 
> > > 
> > > @PaulSandoz Do you want to limit these **scalar** operations to a class 
> > > name that implies **vector** use?
> > 
> > 
> > It's whatever math functions are required to in support of vector 
> > operations (as the JavaDoc indicates) that are not provided by other 
> > classes such as the boxed primitives or `java.lang.Math`.
> 
> Ok. I suppose these methods could eventually be moved to `java.lang.Math` or 
> some other `java.lang` class, when the VectorAPI goes out of incubator mode?
> 
> I feel like these saturating operations, and also the unsigned ops could find 
> a more wider use, away from (explicit) vector usage. For example, the 
> saturating operations are nice because they prevent overflows, and in some 
> cases that would be very nice to have readily available.

Hi @eme64 , yes that what our extended plan is, for this patch we want to 
restrict its use to VectorAPI. 

> > > Do we have tests for the publically exposed methods in this new file? Or 
> > > are they only implicitly tested through the VectorAPI, and its tests? 
> > > `src/jdk.incubator.vector/share/classes/jdk/incubator/vector/VectorMath.java`
> > > Why is this even called `VectorMath`? Because those ops are not at all 
> > > restricted to vectorization, right?
> > 
> > 
> > Nomenclature is suggested by Paul.
> 
> @PaulSandoz Do you want to limit these **scalar** operations to a class name 
> that implies **vector** use?
> 
> > We have sufficient test coverage of these APIs in JTREG tests.
> 
> @jatin-bhateja I can't see any dedicated JTREG tests to the `VectorMath` 
> methods. I only see the VectorAPI tests. Can you point me to the `VectorMath` 
> tests? I'd like to review them.

@eme64 , @PaulSandoz , I agree that explicit test for all newly added 
VectorMath operation for all integral types is justified here.

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

PR Comment: https://git.openjdk.org/jdk/pull/20507#issuecomment-2360118143

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