[thirdparty/glibc.git] / sysdeps / ieee754 / ldbl-128 / printf_fphex.c

/* 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)

#include <stdio-common/printf_fphex.c>
Commit	Line	Data
abfbdde1	1	/* Print floating point number in hexadecimal notation according to
ec751a23	2	ISO C99.
d4697bc9	3	Copyright (C) 1997-2014 Free Software Foundation, Inc.
abfbdde1 UD	4	This file is part of the GNU C Library.
	5
	6	The GNU C Library is free software; you can redistribute it and/or
41bdb6e2 AJ	7	modify it under the terms of the GNU Lesser General Public
	8	License as published by the Free Software Foundation; either
	9	version 2.1 of the License, or (at your option) any later version.
abfbdde1 UD	10
	11	The GNU C Library is distributed in the hope that it will be useful,
	12	but WITHOUT ANY WARRANTY; without even the implied warranty of
	13	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
41bdb6e2	14	Lesser General Public License for more details.
abfbdde1	15
41bdb6e2	16	You should have received a copy of the GNU Lesser General Public
59ba27a6 PE	17	License along with the GNU C Library; if not, see
59ba27a6 PE	18	<http://www.gnu.org/licenses/>. */
abfbdde1 UD	19
	20	#define PRINT_FPHEX_LONG_DOUBLE \
	21	do { \
	22	/* We have 112 bits of mantissa plus one implicit digit. Since \
	23	112 bits are representable without rest using hexadecimal \
	24	digits we use only the implicit digits for the number before \
	25	the decimal point. */ \
	26	unsigned long long int num0, num1; \
1b6adf88 AM	27	union ieee854_long_double u; \
1b6adf88 AM	28	u.d = fpnum.ldbl; \
abfbdde1 UD	29	\
	30	assert (sizeof (long double) == 16); \
	31	\
1b6adf88 AM	32	num0 = (((unsigned long long int) u.ieee.mantissa0) << 32 \
	33	\| u.ieee.mantissa1); \
	34	num1 = (((unsigned long long int) u.ieee.mantissa2) << 32 \
	35	\| u.ieee.mantissa3); \
abfbdde1 UD	36	\
	37	zero_mantissa = (num0\|num1) == 0; \
	38	\
	39	if (sizeof (unsigned long int) > 6) \
faf2289f UD	40	{ \
	41	numstr = _itoa_word (num1, numbuf + sizeof numbuf, 16, \
	42	info->spec == 'A'); \
8a0759d1	43	wnumstr = _itowa_word (num1, \
b15cb495 UD	44	wnumbuf + sizeof (wnumbuf) / sizeof (wchar_t),\
b15cb495 UD	45	16, info->spec == 'A'); \
faf2289f	46	} \
abfbdde1	47	else \
faf2289f UD	48	{ \
	49	numstr = _itoa (num1, numbuf + sizeof numbuf, 16, \
	50	info->spec == 'A'); \
b15cb495 UD	51	wnumstr = _itowa (num1, \
	52	wnumbuf + sizeof (wnumbuf) / sizeof (wchar_t), \
	53	16, info->spec == 'A'); \
faf2289f	54	} \
abfbdde1 UD	55	\
abfbdde1 UD	56	while (numstr > numbuf + (sizeof numbuf - 64 / 4)) \
faf2289f UD	57	{ \
	58	*--numstr = '0'; \
	59	*--wnumstr = L'0'; \
	60	} \
abfbdde1 UD	61	\
abfbdde1 UD	62	if (sizeof (unsigned long int) > 6) \
faf2289f UD	63	{ \
	64	numstr = _itoa_word (num0, numstr, 16, info->spec == 'A'); \
	65	wnumstr = _itowa_word (num0, wnumstr, 16, info->spec == 'A'); \
	66	} \
abfbdde1	67	else \
faf2289f UD	68	{ \
	69	numstr = _itoa (num0, numstr, 16, info->spec == 'A'); \
	70	wnumstr = _itowa (num0, wnumstr, 16, info->spec == 'A'); \
	71	} \
abfbdde1 UD	72	\
	73	/* Fill with zeroes. */ \
	74	while (numstr > numbuf + (sizeof numbuf - 112 / 4)) \
faf2289f UD	75	{ \
	76	*--numstr = '0'; \
	77	*--wnumstr = L'0'; \
	78	} \
abfbdde1	79	\
1b6adf88	80	leading = u.ieee.exponent == 0 ? '0' : '1'; \
abfbdde1	81	\
1b6adf88	82	exponent = u.ieee.exponent; \
abfbdde1 UD	83	\
	84	if (exponent == 0) \
	85	{ \
	86	if (zero_mantissa) \
	87	expnegative = 0; \
	88	else \
	89	{ \
	90	/* This is a denormalized number. */ \
	91	expnegative = 1; \
	92	exponent = IEEE854_LONG_DOUBLE_BIAS - 1; \
	93	} \
	94	} \
	95	else if (exponent >= IEEE854_LONG_DOUBLE_BIAS) \
	96	{ \
	97	expnegative = 0; \
	98	exponent -= IEEE854_LONG_DOUBLE_BIAS; \
	99	} \
	100	else \
	101	{ \
	102	expnegative = 1; \
	103	exponent = -(exponent - IEEE854_LONG_DOUBLE_BIAS); \
	104	} \
	105	} while (0)
	106
2826ac7e	107	#include <stdio-common/printf_fphex.c>