FPE_FLTUND_TRAP
#define FPE_FLTUND_TRAP 0x5 /* floating underflow */
#define FPE_FLTUND_TRAP 0x5 /* floating underflow */
#define FPE_FLTUND_TRAP 0xcc /* [floating underflow] */
#define FPE_FLTUND_TRAP 0xcc /* [floating underflow] */