The double Bessel functions follow the system libc.prx: FreeBSD msun
e_j0.c, e_j1.c and e_jn.c with every multiply-add the console fuses
done as one FMA, and the console's constant results for zero and
negative arguments of the second kind.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>