[math] 49 Junit test failures in 4.0 beta

[François Laferrière]

When running Junit tests on ACM 4.0-snapshot I get a lot of failures. Mostly (I 
supect) due to roundoff error beyond the tolerance of individual test. Is it 
just a problem on my computer (Ubuntu 22.04, Eclipse 4.23, 
java-18-openJdk-amd64 with JavaSE-1.8 compliance) or a general problem (that 
should eventually be fixed).
many thanks in advance
François Laferrière