1/* Compatibility functions for floating point formatting, reentrant,
2 long double versions.
3 Copyright (C) 1996-2019 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