I'm trying to compile erfa for new Fedora that comes with gcc 6. This is causing a problem in one of the tests. In particular I see this problem in i386 (in x86_64 the test passes)

eraFk52h failed: rv want -7.6000000940000251859 got -7.6000000939851357629 (1/5.1e+11)
t_erfa_c validation failed!

The radial velocity is computed here