if (SvNOK(sv)) {
            NV nv = SvNV(sv);
            if (may_die_on_overflow &&
                ( (nv < 0) || (nv >= NV_0x1p64)) ) overflow(aTHX_ out_of_bounds_error_u);
            return nv;
        }
   397:             return nv;
100045F6 DD 45 B0         fld         qword ptr [nv] 
100045F9 E8 6E 04 01 00   call        _ftol2 (10014A6Ch) 
100045FE EB 4D            jmp         1000464D