VECI_FP_SNAN
[VECI_FP_SNAN] = badtrap,
vectab[VECI_FP_SNAN] = fpfault;
vectab[VECI_FP_SNAN] = FP_SNAN_HANDLER40;
vectab[VECI_FP_SNAN] = FP_SNAN_HANDLER60;