> That is, configure and build like this: > > ##### > sh ./Configure -des -Dusedevel -Duse64bitall && make test_prep > ##### > > ... and then run: > > ##### > cd t;./perl harness -v ../ext/POSIX/t/math.t;cd - > ##### To the OP: If you're able to do that, and it fixes the problem, could you also provide the 'perl -V' output for this new build. Also (as a stab in the dark), on your first build, could you confirm that tanh(-1) and tanh(-1.0) are both returning the same incorrect value of 0.761594155955765. The value should be -0.761594155955765. Cheers, Rob --- via perlbug: queue: perl5 status: open https://rt.perl.org/Ticket/Display.html?id=134171Thread Next