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1 <html>
2 <head>
3 <title>BOOST_PP_REPEAT_FROM_TO_D_z</title>
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7 <div style="margin-left: 0px;">
8 The <b>BOOST_PP_REPEAT_FROM_TO_D_<i>z</i></b> macro represents a fast horizontal repetition construct.&nbsp;
9 It reenters both <b>BOOST_PP_REPEAT</b> and <b>BOOST_PP_WHILE</b> with maximum efficiency.
10 </div>
11 <h4>Usage</h4>
12 <div class="code">
13 <b>BOOST_PP_REPEAT_FROM_TO_D_<i>z</i></b>(<i>d</i>, <i>first</i>, <i>last</i>, <i>macro</i>, <i>data</i>)
14 </div>
15 <h4>Arguments</h4>
16 <dl>
17 <dt>z</dt>
18 <dd>
19 The next available <b>BOOST_PP_REPEAT</b> dimension.
20 </dd>
21 <dt>d</dt>
22 <dd>
23 The next available <b>BOOST_PP_WHILE</b> iteration.
24 </dd>
25 <dt>first</dt>
26 <dd>
27 The lower bound of the repetition.&nbsp;
28 Valid values range from <i>0</i> to <b>BOOST_PP_LIMIT_MAG</b>.
29 </dd>
30 <dt>last</dt>
31 <dd>
32 The upper bound of the repetition.
33 Valid values range from <i>0</i> to <b>BOOST_PP_LIMIT_MAG</b>.
34 </dd>
35 <dt>macro</dt>
36 <dd>
37 A ternary operation of the form <i>macro</i>(<i>z</i>, <i>n</i>, <i>data</i>).&nbsp;
38 This macro is expanded by <b>BOOST_PP_REPEAT</b> with the next available repetition depth,
39 the current repetition number, and the auxiliary <i>data</i> argument.&nbsp;
40 </dd>
41 <dt>data</dt>
42 <dd>
43 Auxiliary data passed to <i>macro</i>.
44 </dd>
45 </dl>
46 <h4>Remarks</h4>
47 <div>
48 This macro expands to the sequence:
49 <div>
50 <i>macro</i>(<i>z</i>, <i>first</i>, <i>data</i>) <i>macro</i>(<i>z</i>, <i>first</i> + <i>1</i>, <i>data</i>) ... <i>macro</i>(<i>z</i>, <i>last</i> - <i>1</i>, <i>data</i>)
51 </div>
52 </div>
53 <div>
54 The number of repetitions (i.e. <i>last</i> - <i>first</i>) must not exceed <b>BOOST_PP_LIMIT_REPEAT</b>.
55 </div>
56 <div>
57 The <i>z</i> value that is passed to <i>macro</i> represents the next available repetition dimension.&nbsp;
58 Other macros that have <b>_Z</b> suffix variants internally use <b>BOOST_PP_REPEAT</b>--for example, <b>BOOST_PP_ENUM_PARAMS</b> and <b>BOOST_PP_ENUM_PARAMS_Z</b>.&nbsp;
59 Using these <b>_Z</b> versions is not strictly necessary, but passing the <i>z</i> value (that is passed to <i>macro</i>) to these macros allows them to reenter <b>BOOST_PP_REPEAT</b> with maximum efficiency.
60 </div>
61 <h4>See Also</h4>
62 <ul>
63 <li><a href="limit_mag.html">BOOST_PP_LIMIT_MAG</a></li>
64 <li><a href="limit_repeat.html">BOOST_PP_LIMIT_REPEAT</a></li>
65 <li><a href="repeat_from_to.html">BOOST_PP_REPEAT_FROM_TO</a></li>
66 <li><a href="repeat_from_to_d.html">BOOST_PP_REPEAT_FROM_TO_D</a></li>
67 </ul>
68 <h4>Requirements</h4>
69 <div>
70 <b>Header:</b> &nbsp;<a href="../headers/repetition/repeat_from_to.html">&lt;boost/preprocessor/repetition/repeat_from_to.hpp&gt;</a>
71 </div>
72 <hr size="1">
73 <div style="margin-left: 0px;">
74 <i>© Copyright <a href="http://www.housemarque.com" target="_top">Housemarque Oy</a> 2002</i>
75 </br><i>© Copyright Paul Mensonides 2002</i>
76 </div>
77 <div style="margin-left: 0px;">
78 <p><small>Distributed under the Boost Software License, Version 1.0. (See
79 accompanying file <a href="../../../../LICENSE_1_0.txt">LICENSE_1_0.txt</a> or
80 copy at <a href=
81 "http://www.boost.org/LICENSE_1_0.txt">www.boost.org/LICENSE_1_0.txt</a>)</small></p>
82 </div>
83 </body>
84 </html>