macro FLT_RADIX

constant FLT_ROUNDS

macro FLT_MANT_DIG
macro DBL_MANT_DIG
macro LDBL_MANT_DIG

macro FLT_DIG
macro DBL_DIG
macro LDBL_DIG

macro FLT_MIN_EXP
macro DBL_MIN_EXP
macro LDBL_MIN_EXP

macro FLT_MIN_10_EXP
macro DBL_MIN_10_EXP
macro LDBL_MIN_10_EXP

macro FLT_MAX_EXP
macro DBL_MAX_EXP
macro LDBL_MAX_EXP

macro FLT_MAX_10_EXP
macro DBL_MAX_10_EXP
macro LDBL_MAX_10_EXP

macro FLT_MAX
macro DBL_MAX
macro LDBL_MAX

macro FLT_EPSILON
macro DBL_EPSILON
macro LDBL_EPSILON

macro FLT_MIN
macro DBL_MIN
macro LDBL_MIN

allow *_t