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comparison libquadmath/printf/fpioconst.h @ 68:561a7518be6b

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update gcc-4.6
author Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
date Sun, 21 Aug 2011 07:07:55 +0900
parents
children 04ced10e8804
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67:f6334be47118 68:561a7518be6b
1 /* Header file for constants used in floating point <-> decimal conversions.
2 Copyright (C) 1995, 1996, 1997, 1998, 1999, 2002, 2003
3 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, write to the Free
18 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
19 02111-1307 USA. */
20
21 #ifndef _FPIOCONST_H
22 #define _FPIOCONST_H
23
24 #include <float.h>
25 #include <math.h>
26
27
28 /* These values are used by __printf_fp, where they are noncritical (if the
29 value is not large enough, it will just be slower); and by
30 strtof/strtod/strtold, where it is critical (it's used for overflow
31 detection).
32
33 XXX These should be defined in <float.h>. For the time being, we have the
34 IEEE754 values here. */
35
36 #define FLT128_MAX_10_EXP_LOG 12 /* = floor(log_2(FLT128_MAX_10_EXP)) */
37
38
39 /* The array with the number representation. */
40 #define __tens __quadmath_tens
41 extern const mp_limb_t __tens[] attribute_hidden;
42
43 /* Table of powers of ten. This is used by __printf_fp and by
44 strtof/strtod/strtold. */
45 struct mp_power
46 {
47 size_t arrayoff; /* Offset in `__tens'. */
48 mp_size_t arraysize; /* Size of the array. */
49 int p_expo; /* Exponent of the number 10^(2^i). */
50 int m_expo; /* Exponent of the number 10^-(2^i-1). */
51 };
52 #define _fpioconst_pow10 __quadmath_fpioconst_pow10
53 extern const struct mp_power _fpioconst_pow10[FLT128_MAX_10_EXP_LOG + 1]
54 attribute_hidden;
55
56 /* The constants in the array `_fpioconst_pow10' have an offset. */
57 #if BITS_PER_MP_LIMB == 32
58 # define _FPIO_CONST_OFFSET 2
59 #else
60 # define _FPIO_CONST_OFFSET 1
61 #endif
62
63
64 #endif /* fpioconst.h */