swrlb:pow negative value?

[vChavezB]

It would be nice if swrlb:pow would accept negative values.

I get an invalid math operation error with a negative pow value

https://github.com/protegeproject/swrlapi/blob/5b89d824541899255bc858aeca4a9c4f4b585882/src/main/java/org/swrlapi/builtins/swrlb/SWRLBuiltInLibraryImpl.java#L1527C6-L1527C8

It seems that BigDecimal requires a math context when using negative

https://stackoverflow.com/a/9932295

If not, by default a BigDecimal will only accept pow with positive numbers.

Alternative for my use case:

Add a second SWRL rule that processes negative pows with division (1/pow(10,x))

swrlb:lessThan(?power_neg,0) ^ swrlb:abs(?abs_val,?power_neg)^swrlb:pow(?pow_val,10,?abs_val) ^ swrlb:divide(?result,1.0000,pow_val) -> my_consequents_here