projects / thirdparty / glibc.git / blame
| Commit | Line | Data |
|---|---|---|
| 19361cb7 UD |
1 | /* Compatibility functions for floating point formatting, reentrant, |
| 2 | long double versions. | |
| 688903eb | 3 | Copyright (C) 1996-2018 Free Software Foundation, Inc. |
| 19361cb7 | 4 | This file is part of the GNU C Library. |
| 2064087b | 5 | |
| 19361cb7 | 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. | |
| 2064087b | 10 | |
| 19361cb7 UD |
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. |
| 2064087b | 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/>. */ | |
| 2064087b | 19 | |
| b113c12c UD |
20 | #include <float.h> |
| 21 | ||
| 2064087b RM |
22 | #define FLOAT_TYPE long double |
| 23 | #define FUNC_PREFIX q | |
| 24 | #define FLOAT_FMT_FLAG "L" | |
| 25 | #define FLOAT_NAME_EXT l | |
| 7d585303 | 26 | #define FLOAT_MIN_10_EXP LDBL_MIN_10_EXP |
| b113c12c UD |
27 | #if LDBL_MANT_DIG == 64 |
| 28 | # define NDIGIT_MAX 21 | |
| f9a2a636 UD |
29 | #elif LDBL_MANT_DIG == 53 |
| 30 | # define NDIGIT_MAX 17 | |
| 31 | #elif LDBL_MANT_DIG == 113 | |
| 32 | # define NDIGIT_MAX 36 | |
| 5ce98c3f UD |
33 | #elif LDBL_MANT_DIG == 106 |
| 34 | # define NDIGIT_MAX 34 | |
| f9a2a636 UD |
35 | #elif LDBL_MANT_DIG == 56 |
| 36 | # define NDIGIT_MAX 18 | |
| b113c12c | 37 | #else |
| f9a2a636 UD |
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" | |
| b113c12c UD |
41 | # define NDIGIT_MAX (lrint (ceil (M_LN2 / M_LN10 * LDBL_MANT_DIG + 1.0))) |
| 42 | #endif | |
| 7d585303 UD |
43 | #if LDBL_MIN_10_EXP == -37 |
| 44 | # define FLOAT_MIN_10_NORM 1.0e-37L | |
| f964490f RM |
45 | #elif LDBL_MIN_10_EXP == -291 |
| 46 | # define FLOAT_MIN_10_NORM 1.0e-291L | |
| 7d585303 UD |
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 | |
| 2064087b RM |
56 | |
| 57 | #include "efgcvt_r.c" |