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git.ipfire.org Git - thirdparty/glibc.git/blob - sysdeps/ia64/fpu/printf_fphex.c
1 /* Print floating point number in hexadecimal notation according to ISO C99.
2 Copyright (C) 2000, 2005 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <http://www.gnu.org/licenses/>. */
19 #ifndef LONG_DOUBLE_DENORM_BIAS
20 # define LONG_DOUBLE_DENORM_BIAS (IEEE854_LONG_DOUBLE_BIAS - 1)
23 #define PRINT_FPHEX_LONG_DOUBLE \
25 /* The "strange" 80 bit format on ia64 has an explicit \
26 leading digit in the 64 bit mantissa. */ \
27 unsigned long long int num; \
29 num = (((unsigned long long int) fpnum.ldbl.ieee.mantissa0) << 32 \
30 | fpnum.ldbl.ieee.mantissa1); \
32 zero_mantissa = num == 0; \
34 numstr = _itoa_word (num, numbuf + sizeof numbuf, 16, \
36 wnumstr = _itowa_word (num, \
37 wnumbuf + sizeof (wnumbuf) / sizeof (wchar_t), \
38 16, info->spec == 'A'); \
40 /* Fill with zeroes. */ \
41 while (numstr > numbuf + (sizeof numbuf - 64 / 4)) \
47 /* We use a full nibble for the leading digit. */ \
48 leading = *numstr++; \
50 /* We have 3 bits from the mantissa in the leading nibble. \
51 Therefore we are here using `IEEE854_LONG_DOUBLE_BIAS + 3'. */ \
52 exponent = fpnum.ldbl.ieee.exponent; \
60 /* This is a denormalized number. */ \
62 /* This is a hook for the m68k long double format, where the \
63 exponent bias is the same for normalized and denormalized \
65 exponent = LONG_DOUBLE_DENORM_BIAS + 3; \
68 else if (exponent >= IEEE854_LONG_DOUBLE_BIAS + 3) \
71 exponent -= IEEE854_LONG_DOUBLE_BIAS + 3; \
76 exponent = -(exponent - (IEEE854_LONG_DOUBLE_BIAS + 3)); \
80 #include <stdio-common/printf_fphex.c>