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abfbdde1 | 1 | /* Print floating point number in hexadecimal notation according to |
ec751a23 | 2 | ISO C99. |
568035b7 | 3 | Copyright (C) 1997-2013 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 |
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; \ |
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),\ |
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 | \ |
56 | while (numstr > numbuf + (sizeof numbuf - 64 / 4)) \ | |
faf2289f UD |
57 | { \ |
58 | *--numstr = '0'; \ | |
59 | *--wnumstr = L'0'; \ | |
60 | } \ | |
abfbdde1 UD |
61 | \ |
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> |