text: #ifndef _FLOAT_H_
  #define _FLOAT_H_
  
  #define FLT_RADIX 2
  
  /* IEEE float */
  #define FLT_MANT_DIG 24
  #define FLT_DIG 6
  #define FLT_ROUNDS 1
  #define FLT_EPSILON 1.19209290e-07F
  #define FLT_MIN_EXP (-125)
  #define FLT_MIN 1.17549435e-38F
  #define FLT_MIN_10_EXP (-37)
  #define FLT_MAX_EXP 128
  #define FLT_MAX 3.40282347e+38F
  #define FLT_MAX_10_EXP 38
  
  /* IEEE double */
  #define DBL_MANT_DIG 53
  #define DBL_DIG 15
  #define DBL_EPSILON 2.2204460492503131e-16
  #define DBL_MIN_EXP (-1021)
  #define DBL_MIN 2.2250738585072014e-308
  #define DBL_MIN_10_EXP (-307)
  #define DBL_MAX_EXP 1024
  #define DBL_MAX 1.7976931348623157e+308
  #define DBL_MAX_10_EXP 308
  
  /* horrible intel long double */
  #if defined __i386__ || defined __x86_64__
  
  #define LDBL_MANT_DIG 64
  #define LDBL_DIG 18
  #define LDBL_EPSILON 1.08420217248550443401e-19L
  #define LDBL_MIN_EXP (-16381)
  #define LDBL_MIN 3.36210314311209350626e-4932L
  #define LDBL_MIN_10_EXP (-4931)
  #define LDBL_MAX_EXP 16384
  #define LDBL_MAX 1.18973149535723176502e+4932L
  #define LDBL_MAX_10_EXP 4932
  
  #elif defined __aarch64__ || defined __riscv
  /*
   * Use values from:
   * gcc -dM -E -xc /dev/null | grep LDBL | sed -e "s/__//g"
   */
  #define LDBL_MANT_DIG 113
  #define LDBL_DIG 33
  #define LDBL_EPSILON 1.92592994438723585305597794258492732e-34L
  #define LDBL_MIN_EXP (-16381)
  #define LDBL_MIN 3.36210314311209350626267781732175260e-4932L
  #define LDBL_MIN_10_EXP (-4931)
  #define LDBL_MAX_EXP 16384
  #define LDBL_MAX 1.18973149535723176508575932662800702e+4932L
  #define LDBL_MAX_EXP 16384
  
  #else
  
  /* same as IEEE double */
  #define LDBL_MANT_DIG 53
  #define LDBL_DIG 15
  #define LDBL_EPSILON 2.2204460492503131e-16L
  #define LDBL_MIN_EXP (-1021)
  #define LDBL_MIN 2.2250738585072014e-308L
  #define LDBL_MIN_10_EXP (-307)
  #define LDBL_MAX_EXP 1024
  #define LDBL_MAX 1.7976931348623157e+308L
  #define LDBL_MAX_10_EXP 308
  
  #endif
  
  #endif /* _FLOAT_H_ */
  