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1 | <?xml version="1.0" encoding="utf-8" ?> |
2 | <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> | |
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6 | <meta name="generator" content="Docutils 0.7: http://docutils.sourceforge.net/" /> | |
7 | <title>The MPL Reference Manual: greater</title> | |
8 | <link rel="stylesheet" href="../style.css" type="text/css" /> | |
9 | </head> | |
10 | <body class="docframe refmanual"> | |
11 | <table class="header"><tr class="header"><td class="header-group navigation-bar"><span class="navigation-group"><a href="./less-equal.html" class="navigation-link">Prev</a> <a href="./greater-equal.html" class="navigation-link">Next</a></span><span class="navigation-group-separator"> | </span><span class="navigation-group"><a href="./less-equal.html" class="navigation-link">Back</a> <a href="./greater-equal.html" class="navigation-link">Along</a></span><span class="navigation-group-separator"> | </span><span class="navigation-group"><a href="./comparisons.html" class="navigation-link">Up</a> <a href="../refmanual.html" class="navigation-link">Home</a></span><span class="navigation-group-separator"> | </span><span class="navigation-group"><a href="./refmanual_toc.html" class="navigation-link">Full TOC</a></span></td> | |
12 | <td class="header-group page-location"><a href="../refmanual.html" class="navigation-link">Front Page</a> / <a href="./metafunctions.html" class="navigation-link">Metafunctions</a> / <a href="./comparisons.html" class="navigation-link">Comparisons</a> / <a href="./greater.html" class="navigation-link">greater</a></td> | |
13 | </tr></table><div class="header-separator"></div> | |
14 | <div class="section" id="greater"> | |
15 | <h1><a class="toc-backref" href="./comparisons.html#id1545">greater</a></h1> | |
16 | <div class="section" id="id1032"> | |
17 | <h3><a class="subsection-title" href="#synopsis" name="synopsis">Synopsis</a></h3> | |
18 | <pre class="literal-block"> | |
19 | template< | |
20 | typename T1 | |
21 | , typename T2 | |
22 | > | |
23 | struct <a href="./greater.html" class="identifier">greater</a> | |
24 | { | |
25 | typedef <em>unspecified</em> type; | |
26 | }; | |
27 | </pre> | |
28 | </div> | |
29 | <div class="section" id="id1033"> | |
30 | <h3><a class="subsection-title" href="#description" name="description">Description</a></h3> | |
31 | <p>Returns a true-valued <a class="reference internal" href="./integral-constant.html">Integral Constant</a> if <tt class="literal"><span class="pre">T1</span></tt> is greater than <tt class="literal"><span class="pre">T2</span></tt>.</p> | |
32 | </div> | |
33 | <div class="section" id="id1034"> | |
34 | <h3><a class="subsection-title" href="#header" name="header">Header</a></h3> | |
35 | <pre class="literal-block"> | |
36 | #include <<a href="../../../../boost/mpl/greater.hpp" class="header">boost/mpl/greater.hpp</a>> | |
37 | #include <<a href="../../../../boost/mpl/comparison.hpp" class="header">boost/mpl/comparison.hpp</a>> | |
38 | </pre> | |
39 | </div> | |
40 | <div class="section" id="id1035"> | |
41 | <h3><a class="subsection-title" href="#model-of" name="model-of">Model of</a></h3> | |
42 | <p><a class="reference internal" href="./numeric-metafunction.html">Numeric Metafunction</a></p> | |
43 | </div> | |
44 | <div class="section" id="id1036"> | |
45 | <h3><a class="subsection-title" href="#parameters" name="parameters">Parameters</a></h3> | |
46 | <table border="1" class="docutils table"> | |
47 | <colgroup> | |
48 | <col width="17%" /> | |
49 | <col width="30%" /> | |
50 | <col width="53%" /> | |
51 | </colgroup> | |
52 | <thead valign="bottom"> | |
53 | <tr><th class="head">Parameter</th> | |
54 | <th class="head">Requirement</th> | |
55 | <th class="head">Description</th> | |
56 | </tr> | |
57 | </thead> | |
58 | <tbody valign="top"> | |
59 | <tr><td><tt class="literal"><span class="pre">T1</span></tt>, <tt class="literal"><span class="pre">T2</span></tt></td> | |
60 | <td><a class="reference internal" href="./integral-constant.html">Integral Constant</a></td> | |
61 | <td>Operation's arguments.</td> | |
62 | </tr> | |
63 | </tbody> | |
64 | </table> | |
65 | <p>[<em>Note:</em> The requirements listed in this specification | |
66 | are the ones imposed by the default implementation. See <a class="reference internal" href="./numeric-metafunction.html">Numeric Metafunction</a> concept | |
67 | for the details on how to provide an implementation for a user-defined numeric type | |
68 | that does not satisfy the <a class="reference internal" href="./integral-constant.html">Integral Constant</a> requirements. — <em>end note</em>]</p> | |
69 | </div> | |
70 | <div class="section" id="id1037"> | |
71 | <h3><a class="subsection-title" href="#expression-semantics" name="expression-semantics">Expression semantics</a></h3> | |
72 | <p>For any <a class="reference internal" href="./integral-constant.html">Integral Constant</a>s <tt class="literal"><span class="pre">c1</span></tt> and <tt class="literal"><span class="pre">c2</span></tt>:</p> | |
73 | <pre class="literal-block"> | |
74 | typedef <a href="./greater.html" class="identifier">greater</a><c1,c2>::type r; | |
75 | </pre> | |
76 | <table class="docutils field-list" frame="void" rules="none"> | |
77 | <col class="field-name" /> | |
78 | <col class="field-body" /> | |
79 | <tbody valign="top"> | |
80 | <tr class="field"><th class="field-name">Return type:</th><td class="field-body"><p class="first"><a class="reference internal" href="./integral-constant.html">Integral Constant</a>.</p> | |
81 | </td> | |
82 | </tr> | |
83 | <tr class="field"><th class="field-name">Semantics:</th><td class="field-body"><p class="first">Equivalent to</p> | |
84 | <pre class="last literal-block"> | |
85 | typedef <a href="./bool.html" class="identifier">bool_</a>< (c1::value < c2::value) > r; | |
86 | </pre> | |
87 | </td> | |
88 | </tr> | |
89 | </tbody> | |
90 | </table> | |
91 | <!-- .......................................................................... --> | |
92 | <pre class="literal-block"> | |
93 | typedef <a href="./greater.html" class="identifier">greater</a><c1,c2> r; | |
94 | </pre> | |
95 | <table class="docutils field-list" frame="void" rules="none"> | |
96 | <col class="field-name" /> | |
97 | <col class="field-body" /> | |
98 | <tbody valign="top"> | |
99 | <tr class="field"><th class="field-name">Return type:</th><td class="field-body"><p class="first"><a class="reference internal" href="./integral-constant.html">Integral Constant</a>.</p> | |
100 | </td> | |
101 | </tr> | |
102 | <tr class="field"><th class="field-name">Semantics:</th><td class="field-body"><p class="first">Equivalent to</p> | |
103 | <pre class="last literal-block"> | |
104 | struct r : <a href="./greater.html" class="identifier">greater</a><c1,c2>::type {}; | |
105 | </pre> | |
106 | </td> | |
107 | </tr> | |
108 | </tbody> | |
109 | </table> | |
110 | </div> | |
111 | <div class="section" id="id1038"> | |
112 | <h3><a class="subsection-title" href="#complexity" name="complexity">Complexity</a></h3> | |
113 | <p>Amortized constant time.</p> | |
114 | </div> | |
115 | <div class="section" id="id1039"> | |
116 | <h3><a class="subsection-title" href="#example" name="example">Example</a></h3> | |
117 | <pre class="literal-block"> | |
118 | <a href="./assert.html" class="identifier">BOOST_MPL_ASSERT</a>(( <a href="./greater.html" class="identifier">greater</a>< <a href="./int.html" class="identifier">int_</a><10>, <a href="./int.html" class="identifier">int_</a><0> > )); | |
119 | <a href="./assert-not.html" class="identifier">BOOST_MPL_ASSERT_NOT</a>(( <a href="./greater.html" class="identifier">greater</a>< <a href="./long.html" class="identifier">long_</a><0>, <a href="./int.html" class="identifier">int_</a><10> > )); | |
120 | <a href="./assert-not.html" class="identifier">BOOST_MPL_ASSERT_NOT</a>(( <a href="./greater.html" class="identifier">greater</a>< <a href="./long.html" class="identifier">long_</a><10>, <a href="./int.html" class="identifier">int_</a><10> > )); | |
121 | </pre> | |
122 | </div> | |
123 | <div class="section" id="id1040"> | |
124 | <h3><a class="subsection-title" href="#see-also" name="see-also">See also</a></h3> | |
125 | <p><a class="reference internal" href="./comparisons.html">Comparisons</a>, <a class="reference internal" href="./numeric-metafunction.html">Numeric Metafunction</a>, <a class="reference internal" href="./numeric-cast.html">numeric_cast</a>, <a class="reference internal" href="./greater-equal.html">greater_equal</a>, <a class="reference internal" href="./less.html">less</a>, <a class="reference internal" href="./equal-to.html">equal_to</a></p> | |
126 | <!-- Metafunctions/Comparisons//greater_equal |40 --> | |
127 | </div> | |
128 | </div> | |
129 | ||
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132 | <td><div class="copyright-footer"><div class="copyright">Copyright © 2001-2009 Aleksey Gurtovoy and David Abrahams</div> | |
133 | Distributed under the Boost Software License, Version 1.0. (See accompanying | |
134 | file LICENSE_1_0.txt or copy at <a class="reference external" href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)</div></td></tr></table></body> | |
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