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annotate lib/search.in.h @ 11224:5aa57cee93aa

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avoid gcc 3.4.3 bug on long double NaN on Irix 6.5 * tests/nan.h (NaNl): Rewrite as function on Irix, to avoid compilation bug by using runtime conversion. * m4/isfinite.m4 (gl_ISFINITE): Likewise. * m4/isnanl.m4 (gl_FUNC_ISNANL): Likewise. * modules/ceill-tests (Files): Use nan.h. * modules/floorl-tests (Files): Likewise. * modules/frexpl-tests (Files): Likewise. * modules/isnanl-tests (Files): Likewise. * modules/ldexpl-tests (Files): Likewise. * modules/roundl-tests (Files): Likewise. * modules/truncl-tests (Files): Likewise. * tests/test-ceill.c (main): Use a working NaN. * tests/test-floorl.c (main): Likewise. * tests/test-frexpl.c (main): Likewise. * tests/test-isnan.c (test_long_double): Likewise. * tests/test-isnanl.h (main): Likewise. * tests/test-ldexpl.h (main): Likewise. * tests/test-roundl.h (main): Likewise. * tests/test-truncl.h (main): Likewise. See http://lists.gnu.org/archive/html/bug-gnulib/2009-02/msg00190.html. Signed-off-by: Eric Blake <ebb9@byu.net>
author Eric Blake <ebb9@byu.net>
date Thu, 26 Feb 2009 20:18:42 -0700
parents 8668b19a7032
children e8d2c6fc33ad
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1 /* A GNU-like <search.h>.
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2
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3 Copyright (C) 2007-2008 Free Software Foundation, Inc.
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4
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5 This program is free software: you can redistribute it and/or modify
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6 it under the terms of the GNU General Public License as published by
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7 the Free Software Foundation; either version 3 of the License, or
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8 (at your option) any later version.
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9
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10 This program is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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13 GNU General Public License for more details.
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14
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15 You should have received a copy of the GNU General Public License
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16 along with this program. If not, see <http://www.gnu.org/licenses/>. */
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17
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18 #ifndef _GL_SEARCH_H
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19
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20 /* The include_next requires a split double-inclusion guard. */
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21 #if @HAVE_SEARCH_H@
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22 # if __GNUC__ >= 3
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23 @PRAGMA_SYSTEM_HEADER@
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24 # endif
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25 # @INCLUDE_NEXT@ @NEXT_SEARCH_H@
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26 #endif
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27
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28 #ifndef _GL_SEARCH_H
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29 #define _GL_SEARCH_H
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31
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32 /* The definition of GL_LINK_WARNING is copied here. */
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33
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34
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35 #ifdef __cplusplus
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36 extern "C" {
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37 #endif
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39
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40 #if @GNULIB_TSEARCH@
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41 # if @REPLACE_TSEARCH@
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42 # define tsearch rpl_tsearch
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43 # define tfind rpl_tfind
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44 # define tdelete rpl_tdelete
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45 # define twalk rpl_twalk
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46 # endif
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47 # if !@HAVE_TSEARCH@ || @REPLACE_TSEARCH@
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48
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49 /* See <http://www.opengroup.org/susv3xbd/search.h.html>,
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50 <http://www.opengroup.org/susv3xsh/tsearch.html>
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51 for details. */
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52
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53 # if !@HAVE_TSEARCH@
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54 typedef enum
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55 {
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56 preorder,
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57 postorder,
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58 endorder,
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59 leaf
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60 }
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61 VISIT;
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62 # endif
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63
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64 /* Searches an element in the tree *VROOTP that compares equal to KEY.
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65 If one is found, it is returned. Otherwise, a new element equal to KEY
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66 is inserted in the tree and is returned. */
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67 extern void * tsearch (const void *key, void **vrootp,
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68 int (*compar) (const void *, const void *));
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69
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70 /* Searches an element in the tree *VROOTP that compares equal to KEY.
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71 If one is found, it is returned. Otherwise, NULL is returned. */
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72 extern void * tfind (const void *key, void *const *vrootp,
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73 int (*compar) (const void *, const void *));
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74
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75 /* Searches an element in the tree *VROOTP that compares equal to KEY.
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76 If one is found, it is removed from the tree, and its parent node is
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77 returned. Otherwise, NULL is returned. */
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78 extern void * tdelete (const void *key, void **vrootp,
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79 int (*compar) (const void *, const void *));
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80
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81 /* Perform a depth-first, left-to-right traversal of the tree VROOT.
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82 The ACTION function is called:
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83 - for non-leaf nodes: 3 times, before the left subtree traversal,
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84 after the left subtree traversal but before the right subtree traversal,
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85 and after the right subtree traversal,
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86 - for leaf nodes: once.
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87 The arguments passed to ACTION are:
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88 1. the node; it can be casted to a 'const void * const *', i.e. into a
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89 pointer to the key,
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90 2. an indicator which visit of the node this is,
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91 3. the level of the node in the tree (0 for the root). */
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92 extern void twalk (const void *vroot,
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93 void (*action) (const void *, VISIT, int));
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94
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95 # endif
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96 #elif defined GNULIB_POSIXCHECK
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97 # undef tsearch
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98 # define tsearch(k,v,c) \
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99 (GL_LINK_WARNING ("tsearch is unportable - " \
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100 "use gnulib module tsearch for portability"), \
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101 tsearch (k, v, c))
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102 # undef tfind
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103 # define tfind(k,v,c) \
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104 (GL_LINK_WARNING ("tfind is unportable - " \
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105 "use gnulib module tsearch for portability"), \
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106 tfind (k, v, c))
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107 # undef tdelete
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108 # define tdelete(k,v,c) \
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109 (GL_LINK_WARNING ("tdelete is unportable - " \
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110 "use gnulib module tsearch for portability"), \
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111 tdelete (k, v, c))
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112 # undef twalk
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113 # define twalk(v,a) \
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114 (GL_LINK_WARNING ("twalk is unportable - " \
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115 "use gnulib module tsearch for portability"), \
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116 twalk (v, a))
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117 #endif
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118
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119
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120 #ifdef __cplusplus
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121 }
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122 #endif
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123
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124 #endif /* _GL_SEARCH_H */
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125 #endif /* _GL_SEARCH_H */