1 | /* Compatibility functions for floating point formatting, reentrant, |
2 | long double versions. |
3 | Copyright (C) 1996-2017 Free Software Foundation, Inc. |
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 |
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. |
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 |
14 | Lesser General Public License for more details. |
15 | |
16 | You should have received a copy of the GNU Lesser General Public |
17 | License along with the GNU C Library; if not, see |
18 | <http://www.gnu.org/licenses/>. */ |
19 | |
20 | #include <float.h> |
21 | |
22 | #define FLOAT_TYPE long double |
23 | #define FUNC_PREFIX q |
24 | #define FLOAT_FMT_FLAG "L" |
25 | #define FLOAT_NAME_EXT l |
26 | #define FLOAT_MIN_10_EXP LDBL_MIN_10_EXP |
27 | #if LDBL_MANT_DIG == 64 |
28 | # define NDIGIT_MAX 21 |
29 | #elif LDBL_MANT_DIG == 53 |
30 | # define NDIGIT_MAX 17 |
31 | #elif LDBL_MANT_DIG == 113 |
32 | # define NDIGIT_MAX 36 |
33 | #elif LDBL_MANT_DIG == 106 |
34 | # define NDIGIT_MAX 34 |
35 | #elif LDBL_MANT_DIG == 56 |
36 | # define NDIGIT_MAX 18 |
37 | #else |
38 | /* See IEEE 854 5.6, table 2 for this formula. Unfortunately we need a |
39 | compile time constant here, so we cannot use it. */ |
40 | # error "NDIGIT_MAX must be precomputed" |
41 | # define NDIGIT_MAX (lrint (ceil (M_LN2 / M_LN10 * LDBL_MANT_DIG + 1.0))) |
42 | #endif |
43 | #if LDBL_MIN_10_EXP == -37 |
44 | # define FLOAT_MIN_10_NORM 1.0e-37L |
45 | #elif LDBL_MIN_10_EXP == -291 |
46 | # define FLOAT_MIN_10_NORM 1.0e-291L |
47 | #elif LDBL_MIN_10_EXP == -307 |
48 | # define FLOAT_MIN_10_NORM 1.0e-307L |
49 | #elif LDBL_MIN_10_EXP == -4931 |
50 | # define FLOAT_MIN_10_NORM 1.0e-4931L |
51 | #else |
52 | /* libc can't depend on libm. */ |
53 | # error "FLOAT_MIN_10_NORM must be precomputed" |
54 | # define FLOAT_MIN_10_NORM exp10l (LDBL_MIN_10_EXP) |
55 | #endif |
56 | |
57 | #include "efgcvt_r.c" |
58 | |