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xrange.html 13 KB
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    24. 

  24. </div>
    25. 

  25. <div class="refentry">
    26. 

  26. <a name="boost.unit_test.data.xrange"></a><div class="titlepage"></div>
    27. 

  27. <div class="refnamediv">
    28. 

  28. <h2><span class="refentrytitle">Function xrange</span></h2>
    29. 

  29. <p>boost::unit_test::data::xrange &#8212; Creates a range (sequence) dataset. </p>
    30. 

  30. </div>
    31. 

  31. <h2 xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="refsynopsisdiv-title">Synopsis</h2>
    32. 

  32. <div xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="refsynopsisdiv"><pre class="synopsis"><span class="comment">// In header: &lt;<a class="link" href="../../../header/boost/test/data/monomorphic/generators/xrange_hpp.html" title="Header &lt;boost/test/data/monomorphic/generators/xrange.hpp&gt;">boost/test/data/monomorphic/generators/xrange.hpp</a>&gt;
    33. 

  33. 

  34. </span>
    35. 

  35. <span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> SampleType<span class="special">,</span> <span class="keyword">typename</span> Params<span class="special">&gt;</span> 
    36. 

  36.   <a class="link" href="monomorphic/generated_by.html" title="Class template generated_by">monomorphic::generated_by</a><span class="special">&lt;</span> <a class="link" href="monomorphic/xrange_t.html" title="Class template xrange_t">monomorphic::xrange_t</a><span class="special">&lt;</span> <span class="identifier">SampleType</span> <span class="special">&gt;</span> <span class="special">&gt;</span> 
    37. 

  37.   <span class="identifier">xrange</span><span class="special">(</span><span class="identifier">Params</span> <span class="keyword">const</span> <span class="special">&amp;</span> params<span class="special">)</span><span class="special">;</span>
    38. 

  38. <span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> SampleType<span class="special">&gt;</span> 
    39. 

  39.   <a class="link" href="monomorphic/generated_by.html" title="Class template generated_by">monomorphic::generated_by</a><span class="special">&lt;</span> <a class="link" href="monomorphic/xrange_t.html" title="Class template xrange_t">monomorphic::xrange_t</a><span class="special">&lt;</span> <span class="identifier">SampleType</span> <span class="special">&gt;</span> <span class="special">&gt;</span> 
    40. 

  40.   <span class="identifier">xrange</span><span class="special">(</span><span class="identifier">SampleType</span> <span class="keyword">const</span> <span class="special">&amp;</span> end_val<span class="special">)</span><span class="special">;</span>
    41. 

  41. <span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> SampleType<span class="special">,</span> <span class="keyword">typename</span> Params<span class="special">&gt;</span> 
    42. 

  42.   <span class="identifier">enable_if_c</span><span class="special">&lt;</span> <a class="link" href="../../nfp/is_named_param_pack.html" title="Struct template is_named_param_pack">nfp::is_named_param_pack</a><span class="special">&lt;</span> <span class="identifier">Params</span> <span class="special">&gt;</span><span class="special">::</span><span class="identifier">value</span><span class="special">,</span> <a class="link" href="monomorphic/generated_by.html" title="Class template generated_by">monomorphic::generated_by</a><span class="special">&lt;</span> <a class="link" href="monomorphic/xrange_t.html" title="Class template xrange_t">monomorphic::xrange_t</a><span class="special">&lt;</span> <span class="identifier">SampleType</span> <span class="special">&gt;</span> <span class="special">&gt;</span> <span class="special">&gt;</span><span class="special">::</span><span class="identifier">type</span> 
    43. 

  43.   <span class="identifier">xrange</span><span class="special">(</span><span class="identifier">SampleType</span> <span class="keyword">const</span> <span class="special">&amp;</span> end_val<span class="special">,</span> <span class="identifier">Params</span> <span class="keyword">const</span> <span class="special">&amp;</span> params<span class="special">)</span><span class="special">;</span>
    44. 

  44. <span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> SampleType<span class="special">&gt;</span> 
    45. 

  45.   <a class="link" href="monomorphic/generated_by.html" title="Class template generated_by">monomorphic::generated_by</a><span class="special">&lt;</span> <a class="link" href="monomorphic/xrange_t.html" title="Class template xrange_t">monomorphic::xrange_t</a><span class="special">&lt;</span> <span class="identifier">SampleType</span> <span class="special">&gt;</span> <span class="special">&gt;</span> 
    46. 

  46.   <span class="identifier">xrange</span><span class="special">(</span><span class="identifier">SampleType</span> <span class="keyword">const</span> <span class="special">&amp;</span> begin_val<span class="special">,</span> <span class="identifier">SampleType</span> <span class="keyword">const</span> <span class="special">&amp;</span> end_val<span class="special">)</span><span class="special">;</span>
    47. 

  47. <span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> SampleType<span class="special">,</span> <span class="keyword">typename</span> StepType<span class="special">&gt;</span> 
    48. 

  48.   <a class="link" href="monomorphic/generated_by.html" title="Class template generated_by">monomorphic::generated_by</a><span class="special">&lt;</span> <a class="link" href="monomorphic/xrange_t.html" title="Class template xrange_t">monomorphic::xrange_t</a><span class="special">&lt;</span> <span class="identifier">SampleType</span> <span class="special">&gt;</span> <span class="special">&gt;</span> 
    49. 

  49.   <span class="identifier">xrange</span><span class="special">(</span><span class="identifier">SampleType</span> <span class="keyword">const</span> <span class="special">&amp;</span> begin_val<span class="special">,</span> <span class="identifier">SampleType</span> <span class="keyword">const</span> <span class="special">&amp;</span> end_val<span class="special">,</span> 
    50. 

  50.          <span class="identifier">StepType</span> <span class="keyword">const</span> <span class="special">&amp;</span> step_val<span class="special">)</span><span class="special">;</span></pre></div>
    51. 

  51. <div class="refsect1">
    52. 

  52. <a name="idm45313893078240"></a><h2>Description</h2>
    53. 

  53. <p>The following overloads are available: </p>
    54. 

  54. <pre class="programlisting"><span class="keyword">auto</span> <span class="identifier">d</span> <span class="special">=</span> <span class="identifier">xrange</span><span class="special">(</span><span class="special">)</span><span class="special">;</span>
    55. 

  55. <span class="keyword">auto</span> <span class="identifier">d</span> <span class="special">=</span> <span class="identifier">xrange</span><span class="special">(</span><span class="identifier">end_val</span><span class="special">)</span><span class="special">;</span>
    56. 

  56. <span class="keyword">auto</span> <span class="identifier">d</span> <span class="special">=</span> <span class="identifier">xrange</span><span class="special">(</span><span class="identifier">end_val</span><span class="special">,</span> <span class="identifier">param</span><span class="special">)</span><span class="special">;</span>
    57. 

  57. <span class="keyword">auto</span> <span class="identifier">d</span> <span class="special">=</span> <span class="identifier">xrange</span><span class="special">(</span><span class="identifier">begin_val</span><span class="special">,</span> <span class="identifier">end_val</span><span class="special">)</span><span class="special">;</span>
    58. 

  58. <span class="keyword">auto</span> <span class="identifier">d</span> <span class="special">=</span> <span class="identifier">xrange</span><span class="special">(</span><span class="identifier">begin_val</span><span class="special">,</span> <span class="identifier">end_val</span><span class="special">,</span> <span class="identifier">step_val</span><span class="special">)</span><span class="special">;</span>
    59. 

  59. <span class="keyword">auto</span> <span class="identifier">d</span> <span class="special">=</span> <span class="identifier">xrange</span><span class="special">(</span><span class="identifier">param</span><span class="special">)</span><span class="special">;</span>
    60. 

  60. </pre>
    61. 

  61. <div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
    62. 

  62. <li class="listitem"><p><code class="computeroutput">begin_val</code> indicates the start of the sequence (default to 0).</p></li>
    63. 

  63. <li class="listitem"><p><code class="computeroutput">end_val</code> is the end of the sequence. If ommited, the dataset has infinite size.<br>
    64. 

  64. </p></li>
    65. 

  65. <li class="listitem"><p><code class="computeroutput">step_val</code> is the step between two consecutive elements of the sequence, and defaults to 1.<br>
    66. 

  66. </p></li>
    67. 

  67. <li class="listitem">
    68. 

  68. <p><code class="computeroutput">param</code> is the named parameters that describe the sequence. The following parameters are accepted:</p>
    69. 

  69. <div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: circle; ">
    70. 

  70. <li class="listitem"><p><code class="computeroutput">begin:</code> same meaning <code class="computeroutput">begin_val</code> </p></li>
    71. 

  71. <li class="listitem"><p><code class="computeroutput">end:</code> same meaning as <code class="computeroutput">end_val</code> </p></li>
    72. 

  72. <li class="listitem"><p><code class="computeroutput">step:</code> same meaning as <code class="computeroutput">step_val</code> </p></li>
    73. 

  73. </ul></div>
    74. 

  74. <p>
    75. 

  75. </p>
    76. 

  76. </li>
    77. 

  77. </ul></div>
    78. 

  78. <p>
    79. 

  79. </p>
    80. 

  80. <p>The returned value is an object that implements the dataset API.</p>
    81. 

  81. <div class="note"><table border="0" summary="Note">
    82. 

  82. <tr>
    83. 

  83. <td rowspan="2" align="center" valign="top" width="25"><img alt="[Note]" src="../../../../../../../doc/src/images/note.png"></td>
    84. 

  84. <th align="left">Note</th>
    85. 

  85. </tr>
    86. 

  86. <tr><td align="left" valign="top"><p>the step size cannot be null, and it should be positive if <code class="computeroutput">begin_val</code> &lt; <code class="computeroutput">end_val</code>, negative otherwise. </p></td></tr>
    87. 

  87. </table></div>
    88. 

  88. <p>
    89. 

  89. </p>
    90. 

  90. </div>
    91. 

  91. </div>
    92. 

  92. <table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
    93. 

  93. <td align="left"></td>
    94. 

  94. <td align="right"><div class="copyright-footer">Copyright &#169; 2001-2019 Boost.Test
    95. 

  95.       contributors<p>
    96. 

  96.         Distributed under the Boost Software License, Version 1.0. (See accompanying
    97. 

  97.         file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
    98. 

  98.       </p>
    99. 

  99. </div></td>
    100. 

  100. </tr></table>
    101. 

  101. <hr>
    102. 

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    103. 

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