RFR: 8355992: Add unsignedMultiplyExact and *powExact methods to Math and StrictMath

[Raffaello Giulietti]

On Fri, 2 May 2025 14:06:23 GMT, Per Minborg <pminborg at openjdk.org> wrote:

>> Add `powExact()` and `unsignedPowExact()` methods that operate on integer values arguments.
>> Further, add `unsignedMultiplyExact` methods as well.
>
> Maybe it is too late, but shouldn't there be a better way to structure all these methods and variants in Math and MathExact? x(), xExact() and all the different parameter types create a rather big Cartesian product.

@minborg I'm open to suggestions for the `pow` methods.
But for the `unsignedMultiplyExact` methods, as their signed counterparts are already in `[Strict]Math` since a long time, I think they should land there as well.

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PR Comment: https://git.openjdk.org/jdk/pull/25003#issuecomment-2847316992