/* 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/>.  */

#define PRINT_FPHEX_LONG_DOUBLE \
do {                                                                          \
      /* We have 112 bits of mantissa plus one implicit digit.  Since         \
         112 bits are representable without rest using hexadecimal            \
         digits we use only the implicit digits for the number before         \
         the decimal point.  */                                               \
      unsigned long long int num0, num1;                                      \
      union ieee854_long_double u;                                            \
      u.d = fpnum.ldbl;                                                       \
                                                                              \
      assert (sizeof (long double) == 16);                                    \
                                                                              \
      num0 = (((unsigned long long int) u.ieee.mantissa0) << 32               \
             | u.ieee.mantissa1);                                             \
      num1 = (((unsigned long long int) u.ieee.mantissa2) << 32               \
             | u.ieee.mantissa3);                                             \
                                                                              \
      zero_mantissa = (num0|num1) == 0;                                       \
                                                                              \
      if (sizeof (unsigned long int) > 6)                                     \
        {                                                                     \
          numstr = _itoa_word (num1, numbuf + sizeof numbuf, 16,              \
                               info->spec == 'A');                            \
          wnumstr = _itowa_word (num1,                                        \
                                 wnumbuf + sizeof (wnumbuf) / sizeof (wchar_t),\
                                 16, info->spec == 'A');                      \
        }                                                                     \
      else                                                                    \
        {                                                                     \
          numstr = _itoa (num1, numbuf + sizeof numbuf, 16,                   \
                          info->spec == 'A');                                 \
          wnumstr = _itowa (num1,                                             \
                            wnumbuf + sizeof (wnumbuf) / sizeof (wchar_t),    \
                            16, info->spec == 'A');                           \
        }                                                                     \
                                                                              \
      while (numstr > numbuf + (sizeof numbuf - 64 / 4))                      \
        {                                                                     \
          *--numstr = '0';                                                    \
          *--wnumstr = L'0';                                                  \
        }                                                                     \
                                                                              \
      if (sizeof (unsigned long int) > 6)                                     \
        {                                                                     \
          numstr = _itoa_word (num0, numstr, 16, info->spec == 'A');          \
          wnumstr = _itowa_word (num0, wnumstr, 16, info->spec == 'A');       \
        }                                                                     \
      else                                                                    \
        {                                                                     \
          numstr = _itoa (num0, numstr, 16, info->spec == 'A');               \
          wnumstr = _itowa (num0, wnumstr, 16, info->spec == 'A');            \
        }                                                                     \
                                                                              \
      /* Fill with zeroes.  */                                                \
      while (numstr > numbuf + (sizeof numbuf - 112 / 4))                     \
        {                                                                     \
          *--numstr = '0';                                                    \
          *--wnumstr = L'0';                                                  \
        }                                                                     \
                                                                              \
      leading = u.ieee.exponent == 0 ? '0' : '1';                             \
                                                                              \
      exponent = u.ieee.exponent;                                             \
                                                                              \
      if (exponent == 0)                                                      \
        {                                                                     \
          if (zero_mantissa)                                                  \
            expnegative = 0;                                                  \
          else                                                                \
            {                                                                 \
              /* This is a denormalized number.  */                           \
              expnegative = 1;                                                \
              exponent = IEEE854_LONG_DOUBLE_BIAS - 1;                        \
            }                                                                 \
        }                                                                     \
      else if (exponent >= IEEE854_LONG_DOUBLE_BIAS)                          \
        {                                                                     \
          expnegative = 0;                                                    \
          exponent -= IEEE854_LONG_DOUBLE_BIAS;                               \
        }                                                                     \
      else                                                                    \
        {                                                                     \
          expnegative = 1;                                                    \
          exponent = -(exponent - IEEE854_LONG_DOUBLE_BIAS);                  \
        }                                                                     \
} while (0)