enum fp_pi_type
{
    fp_pi_infinite = 0, 
    fp_pi_66 = 1, 
    fp_pi_53 = 2
};
struct _iobuf {
  int _cnt;
  unsigned char *_ptr;
  unsigned char *_base;
  int _bufsiz;
  short _flag;
  char _file;
}
;
enum fp_direction_type
{
    fp_nearest = 0, 
    fp_tozero = 1, 
    fp_positive = 2, 
    fp_negative = 3
};
enum fp_precision_type
{
    fp_extended = 0, 
    fp_single = 1, 
    fp_double = 2, 
    fp_precision_3 = 3
};
enum fp_class_type
{
    fp_zero = 0, 
    fp_subnormal = 1, 
    fp_normal = 2, 
    fp_infinity = 3, 
    fp_quiet = 4, 
    fp_signaling = 5
};