/* Print floating point number in hexadecimal notation according to ISO C99.
   Copyright (C) 1997-2014 Free Software Foundation, Inc.
   This file is part of the GNU C Library.

   The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public
   License along with the GNU C Library; if not, see
   <http://www.gnu.org/licenses/>.  */

#ifndef LONG_DOUBLE_DENORM_BIAS
# define LONG_DOUBLE_DENORM_BIAS (IEEE854_LONG_DOUBLE_BIAS - 1)
#endif

#define PRINT_FPHEX_LONG_DOUBLE \
do {                                                                          \
      /* The "strange" 80 bit format on ix86 and m68k has an explicit         \
         leading digit in the 64 bit mantissa.  */                            \
      unsigned long long int num;                                             \
      union ieee854_long_double u;                                            \
      u.d = fpnum.ldbl;                                                       \
                                                                              \
      num = (((unsigned long long int) u.ieee.mantissa0) << 32                \
             | u.ieee.mantissa1);                                             \
                                                                              \
      zero_mantissa = num == 0;                                               \
                                                                              \
      if (sizeof (unsigned long int) > 6)                                     \
        {                                                                     \
          numstr = _itoa_word (num, numbuf + sizeof numbuf, 16,               \
                               info->spec == 'A');                            \
          wnumstr = _itowa_word (num,                                         \
                                 wnumbuf + sizeof (wnumbuf) / sizeof (wchar_t),\
                                 16, info->spec == 'A');                      \
        }                                                                     \
      else                                                                    \
        {                                                                     \
          numstr = _itoa (num, numbuf + sizeof numbuf, 16, info->spec == 'A');\
          wnumstr = _itowa (num,                                              \
                            wnumbuf + sizeof (wnumbuf) / sizeof (wchar_t),    \
                            16, info->spec == 'A');                           \
        }                                                                     \
                                                                              \
      /* Fill with zeroes.  */                                                \
      while (numstr > numbuf + (sizeof numbuf - 64 / 4))                      \
        {                                                                     \
          *--numstr = '0';                                                    \
          *--wnumstr = L'0';                                                  \
        }                                                                     \
                                                                              \
      /* We use a full nibble for the leading digit.  */                      \
      leading = *numstr++;                                                    \
      wnumstr++;                                                              \
                                                                              \
      /* We have 3 bits from the mantissa in the leading nibble.              \
         Therefore we are here using `IEEE854_LONG_DOUBLE_BIAS + 3'.  */      \
      exponent = u.ieee.exponent;                                             \
                                                                              \
      if (exponent == 0)                                                      \
        {                                                                     \
          if (zero_mantissa)                                                  \
            expnegative = 0;                                                  \
          else                                                                \
            {                                                                 \
              /* This is a denormalized number.  */                           \
              expnegative = 1;                                                \
              /* This is a hook for the m68k long double format, where the    \
                 exponent bias is the same for normalized and denormalized    \
                 numbers.  */                                                 \
              exponent = LONG_DOUBLE_DENORM_BIAS + 3;                         \
            }                                                                 \
        }                                                                     \
      else if (exponent >= IEEE854_LONG_DOUBLE_BIAS + 3)                      \
        {                                                                     \
          expnegative = 0;                                                    \
          exponent -= IEEE854_LONG_DOUBLE_BIAS + 3;                           \
        }                                                                     \
      else                                                                    \
        {                                                                     \
          expnegative = 1;                                                    \
          exponent = -(exponent - (IEEE854_LONG_DOUBLE_BIAS + 3));            \
        }                                                                     \
} while (0)