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annotate 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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68
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
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1 /* Header file for constants used in floating point <-> decimal conversions.
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
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2 Copyright (C) 1995, 1996, 1997, 1998, 1999, 2002, 2003
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
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3 Free Software Foundation, Inc.
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
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4 This file is part of the GNU C Library.
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5
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
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6 The GNU C Library is free software; you can redistribute it and/or
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
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7 modify it under the terms of the GNU Lesser General Public
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
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8 License as published by the Free Software Foundation; either
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
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9 version 2.1 of the License, or (at your option) any later version.
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10
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
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11 The GNU C Library is distributed in the hope that it will be useful,
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12 but WITHOUT ANY WARRANTY; without even the implied warranty of
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
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13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
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14 Lesser General Public License for more details.
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15
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16 You should have received a copy of the GNU Lesser General Public
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
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17 License along with the GNU C Library; if not, write to the Free
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
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18 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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19 02111-1307 USA. */
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20
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
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21 #ifndef _FPIOCONST_H
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22 #define _FPIOCONST_H
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23
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24 #include <float.h>
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25 #include <math.h>
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26
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27
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28 /* These values are used by __printf_fp, where they are noncritical (if the
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
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29 value is not large enough, it will just be slower); and by
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
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30 strtof/strtod/strtold, where it is critical (it's used for overflow
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31 detection).
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32
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33 XXX These should be defined in <float.h>. For the time being, we have the
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
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34 IEEE754 values here. */
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35
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36 #define FLT128_MAX_10_EXP_LOG 12 /* = floor(log_2(FLT128_MAX_10_EXP)) */
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37
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38
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39 /* The array with the number representation. */
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40 #define __tens __quadmath_tens
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41 extern const mp_limb_t __tens[] attribute_hidden;
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42
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43 /* Table of powers of ten. This is used by __printf_fp and by
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44 strtof/strtod/strtold. */
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45 struct mp_power
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46 {
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47 size_t arrayoff; /* Offset in `__tens'. */
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48 mp_size_t arraysize; /* Size of the array. */
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49 int p_expo; /* Exponent of the number 10^(2^i). */
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50 int m_expo; /* Exponent of the number 10^-(2^i-1). */
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51 };
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52 #define _fpioconst_pow10 __quadmath_fpioconst_pow10
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53 extern const struct mp_power _fpioconst_pow10[FLT128_MAX_10_EXP_LOG + 1]
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54 attribute_hidden;
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55
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56 /* The constants in the array `_fpioconst_pow10' have an offset. */
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57 #if BITS_PER_MP_LIMB == 32
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58 # define _FPIO_CONST_OFFSET 2
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59 #else
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60 # define _FPIO_CONST_OFFSET 1
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61 #endif
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62
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63
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64 #endif /* fpioconst.h */