FE_UNDERFLOW
#define FE_UNDERFLOW 0x0008
#define FE_UNDERFLOW 0x00000008
#define FE_UNDERFLOW 32
#define FE_UNDERFLOW 0x08000000
#define FE_UNDERFLOW 0x0002
#define FE_UNDERFLOW 0x00000080
#define FE_UNDERFLOW 0x10
#define FE_UNDERFLOW 0x10