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19361cb7 | 1 | /* Compatibility functions for floating point formatting, long double version. |
b168057a | 2 | Copyright (C) 1996-2015 Free Software Foundation, Inc. |
19361cb7 | 3 | This file is part of the GNU C Library. |
2064087b | 4 | |
19361cb7 | 5 | The GNU C Library is free software; you can redistribute it and/or |
41bdb6e2 AJ |
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. | |
2064087b | 9 | |
19361cb7 UD |
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 | |
41bdb6e2 | 13 | Lesser General Public License for more details. |
2064087b | 14 | |
41bdb6e2 | 15 | You should have received a copy of the GNU Lesser General Public |
59ba27a6 PE |
16 | License along with the GNU C Library; if not, see |
17 | <http://www.gnu.org/licenses/>. */ | |
2064087b | 18 | |
b113c12c UD |
19 | #include <float.h> |
20 | ||
2064087b RM |
21 | #define FLOAT_TYPE long double |
22 | #define FUNC_PREFIX q | |
23 | #define FLOAT_FMT_FLAG "L" | |
1cab5444 UD |
24 | /* Actually we have to write (LDBL_DIG + log10 (LDBL_MAX_10_EXP)) but |
25 | we don't have log10 available in the preprocessor. Since we cannot | |
26 | assume anything on the used `long double' format be generous. */ | |
b113c12c | 27 | #define MAXDIG (NDIGIT_MAX + 12) |
887e7ab6 | 28 | #define FCVT_MAXDIG (LDBL_MAX_10_EXP + MAXDIG) |
b113c12c UD |
29 | #if LDBL_MANT_DIG == 64 |
30 | # define NDIGIT_MAX 21 | |
f9a2a636 UD |
31 | #elif LDBL_MANT_DIG == 53 |
32 | # define NDIGIT_MAX 17 | |
33 | #elif LDBL_MANT_DIG == 113 | |
34 | # define NDIGIT_MAX 36 | |
5ce98c3f UD |
35 | #elif LDBL_MANT_DIG == 106 |
36 | # define NDIGIT_MAX 34 | |
f9a2a636 UD |
37 | #elif LDBL_MANT_DIG == 56 |
38 | # define NDIGIT_MAX 18 | |
b113c12c | 39 | #else |
f9a2a636 UD |
40 | /* See IEEE 854 5.6, table 2 for this formula. Unfortunately we need a |
41 | compile time constant here, so we cannot use it. */ | |
42 | # error "NDIGIT_MAX must be precomputed" | |
b113c12c UD |
43 | # define NDIGIT_MAX (lrint (ceil (M_LN2 / M_LN10 * LDBL_MANT_DIG + 1.0))) |
44 | #endif | |
2064087b RM |
45 | |
46 | #include "efgcvt.c" |