/* Macro to print floating point numbers in hexadecimal notation.

   Copyright (C) 2017-2018 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(FLOAT, VAR, IEEE854_UNION, IEEE854_BIAS)		      \

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_UNION u;						      \

      u.d = VAR;							      \

									      \

      assert (sizeof (FLOAT) == 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_BIAS - 1;				      \

	    }								      \

	}								      \

      else if (exponent >= IEEE854_BIAS)				      \

	{								      \

	  expnegative = 0;						      \

	  exponent -= IEEE854_BIAS;					      \

	}								      \

      else								      \

	{								      \

	  expnegative = 1;						      \

	  exponent = -(exponent - IEEE854_BIAS);			      \

	}								      \

} while (0)