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annotate lib/stdio-impl.h @ 16433:ddc2bee9e4f8

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roundl-ieee tests: More tests. * tests/test-roundl-ieee.c: Include isnanl-nolibm.h, infinity.h, nan.h. (main): Add tests for [MX] shaded specification in POSIX. * modules/roundl-ieee-tests (Files): Add tests/infinity.h, tests/nan.h. (Depends-on): Add isnanl-nolibm.
author Bruno Haible <bruno@clisp.org>
date Sun, 26 Feb 2012 14:27:44 +0100
parents ecfc57537d99
children 498a2211d839
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1 /* Implementation details of FILE streams.
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2 Copyright (C) 2007-2008, 2010-2012 Free Software Foundation, Inc.
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3
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4 This program is free software: you can redistribute it and/or modify
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5 it under the terms of the GNU General Public License as published by
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6 the Free Software Foundation; either version 3 of the License, or
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7 (at your option) any later version.
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8
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9 This program is distributed in the hope that it will be useful,
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10 but WITHOUT ANY WARRANTY; without even the implied warranty of
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11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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12 GNU General Public License for more details.
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13
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14 You should have received a copy of the GNU General Public License
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15 along with this program. If not, see <http://www.gnu.org/licenses/>. */
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16
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17 /* Many stdio implementations have the same logic and therefore can share
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18 the same implementation of stdio extension API, except that some fields
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19 have different naming conventions, or their access requires some casts. */
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20
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21
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22 /* BSD stdio derived implementations. */
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23
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24 #if defined __NetBSD__ /* NetBSD */
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25 /* Get __NetBSD_Version__. */
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26 # include <sys/param.h>
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27 #endif
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28
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29 #include <errno.h> /* For detecting Plan9. */
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30
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31 #if defined __sferror || defined __DragonFly__ /* FreeBSD, NetBSD, OpenBSD, DragonFly, MacOS X, Cygwin */
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32
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33 # if defined __DragonFly__ /* DragonFly */
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34 /* See <http://www.dragonflybsd.org/cvsweb/src/lib/libc/stdio/priv_stdio.h?rev=HEAD&content-type=text/x-cvsweb-markup>. */
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35 # define fp_ ((struct { struct __FILE_public pub; \
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36 struct { unsigned char *_base; int _size; } _bf; \
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37 void *cookie; \
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38 void *_close; \
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39 void *_read; \
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40 void *_seek; \
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41 void *_write; \
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42 struct { unsigned char *_base; int _size; } _ub; \
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43 int _ur; \
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44 unsigned char _ubuf[3]; \
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45 unsigned char _nbuf[1]; \
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46 struct { unsigned char *_base; int _size; } _lb; \
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47 int _blksize; \
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48 fpos_t _offset; \
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49 /* More fields, not relevant here. */ \
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50 } *) fp)
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51 /* See <http://www.dragonflybsd.org/cvsweb/src/include/stdio.h?rev=HEAD&content-type=text/x-cvsweb-markup>. */
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52 # define _p pub._p
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53 # define _flags pub._flags
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54 # define _r pub._r
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55 # define _w pub._w
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56 # else
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57 # define fp_ fp
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58 # endif
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59
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60 # if (defined __NetBSD__ && __NetBSD_Version__ >= 105270000) || defined __OpenBSD__ /* NetBSD >= 1.5ZA, OpenBSD */
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61 /* See <http://cvsweb.netbsd.org/bsdweb.cgi/src/lib/libc/stdio/fileext.h?rev=HEAD&content-type=text/x-cvsweb-markup>
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62 and <http://www.openbsd.org/cgi-bin/cvsweb/src/lib/libc/stdio/fileext.h?rev=HEAD&content-type=text/x-cvsweb-markup> */
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63 struct __sfileext
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64 {
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65 struct __sbuf _ub; /* ungetc buffer */
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66 /* More fields, not relevant here. */
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67 };
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68 # define fp_ub ((struct __sfileext *) fp->_ext._base)->_ub
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69 # else /* FreeBSD, NetBSD <= 1.5Z, DragonFly, MacOS X, Cygwin */
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70 # define fp_ub fp_->_ub
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71 # endif
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72
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73 # define HASUB(fp) (fp_ub._base != NULL)
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74
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75 #endif
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76
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77
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78 /* SystemV derived implementations. */
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79
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80 #ifdef __TANDEM /* NonStop Kernel */
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81 # ifndef _IOERR
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82 /* These values were determined by the program 'stdioext-flags' at
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83 <http://lists.gnu.org/archive/html/bug-gnulib/2010-12/msg00165.html>. */
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84 # define _IOERR 0x40
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85 # define _IOREAD 0x80
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86 # define _IOWRT 0x4
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87 # define _IORW 0x100
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88 # endif
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89 #endif
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90
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91 #if defined _IOERR
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92
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93 # if defined __sun && defined _LP64 /* Solaris/{SPARC,AMD64} 64-bit */
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94 # define fp_ ((struct { unsigned char *_ptr; \
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95 unsigned char *_base; \
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96 unsigned char *_end; \
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97 long _cnt; \
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98 int _file; \
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99 unsigned int _flag; \
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100 } *) fp)
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101 # else
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102 # define fp_ fp
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103 # endif
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104
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105 # if defined _SCO_DS /* OpenServer */
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106 # define _cnt __cnt
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107 # define _ptr __ptr
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108 # define _base __base
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109 # define _flag __flag
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110 # endif
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111
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112 #endif