general.html

<cxx-clause id="parallel.general">
  <h1>General</h1>
  <cxx-section id="parallel.general.namespaces">
    <h1>Namespaces and headers</h1>

    <p>Since the extensions described in this Technical Specification are
    experimental and not part of the C++ Standard Library, they should not be
    declared directly within namespace <code>std</code>. Unless otherwise specified, all
    components described in this Technical Specification are declared in namespace 
    <code>std::experimental::parallel::v2</code>.</p>

    <cxx-note>
    Once standardized, the components described by this Technical Specification are expected to be promoted to namespace <code>std</code>. 
    </cxx-note>

    <p>Unless otherwise specified, references to such entities described in this
    Technical Specification are assumed to be qualified with
    <code>std::experimental::parallel::v2</code>, and references to entities described in the C++
    Standard Library are assumed to be qualified with <code>std::</code>.</p>

    <p>Extensions that are expected to eventually be added to an existing header
    <code>&lt;meow&gt;</code> are provided inside the <code>&lt;experimental/meow&gt;</code> header,
    which shall include the standard contents of <code>&lt;meow&gt;</code> as if by</p>

<pre>
<code>    #include &lt;meow&gt;</code>
</pre>
  </cxx-section>

  <cxx-section id="parallel.general.features">
    <h1>Feature-testing recommendations</h1>     
    <p>An implementation that provides support for this Technical Specification shall define the feature test macro(s) in Table 1.</p>

    <del>
    <table is="cxx-table" class="column-rules">
      <caption>Feature Test Macro(s)</caption>

      <thead>
        <tr>
          <th>Name</th>
          <th>Value</th>
          <th>Header</th>
        </tr>
        <tr>
          <td><code>__cpp_lib_experimental_parallel_algorithm</code></td>
          <td>201505</td>
          <td>
            <code>&lt;experimental/algorithm&gt;</code><br>
            <code>&lt;experimental/exception_list&gt;</code><br>
            <code>&lt;experimental/execution_policy&gt;</code><br>
            <code>&lt;experimental/numeric&gt;</code>
          </td>
        </tr>
        <tr>
          <td><code>__cpp_lib_experimental_parallel_task_block</code></td>
          <td>201510</td>
          <td>
            <code>&lt;experimental/task_block&gt;</code><br>
          </td>
        </tr>
      </thead>
    </table>
    </del>

    <ins>
    <table is="cxx-table" class="column-rules">
      <caption>Feature Test Macro(s)</caption>

      <thead>
        <tr>
          <th>Doc. No.</th>
          <th>Title</th>
          <th>Primary Section</th>
          <th>Macro Name</th>
          <th>Value</th>
          <th>Header</th>
        </tr>
        <tr>
          <td>N4505</td>
          <td>Working Draft, Technical Specification for C++ Extensions for Parallelism</td>
          <td><cxx-ref to="parallel.alg"</cxx-ref></td>
          <td><code>__cpp_lib_experimental_parallel_algorithm</code></td>
          <td>201505</td>
          <td>
            <code>&lt;experimental/algorithm&gt;</code><br>
            <code>&lt;experimental/exception_list&gt;</code><br>
            <code>&lt;experimental/execution_policy&gt;</code><br>
            <code>&lt;experimental/numeric&gt;</code>
          </td>
        </tr>
        <tr>
          <td>P0155R0</td>
          <td>Task Block R5</td>
          <td><cxx-ref to="parallel.task_block"></cxx-ref></td>
          <td><code>__cpp_lib_experimental_parallel_task_block</code></td>
          <td>201510</td>
          <td>
            <code>&lt;experimental/task_block&gt;</code><br>
          </td>
        </tr>
        <tr>
          <td>P0076R4</td>
          <td>Vector and Wavefront Policies</td>
          <td><cxx-ref to="parallel.execpol.unseq"</cxx-ref>, <cxx-ref to="parallel.execpol.vec"</cxx-ref></td>
          <td><code>__cpp_lib_experimental_execution_vector_policy</code></td>
          <td>201707</td>
          <td>
            <code>&lt;experimental/algorithm&gt;</code><br>
            <code>&lt;experimental/execution&gt;</code><br>
          </td>
        </tr>
      </thead>
    </table>
    <ins>
  </cxx-section>
</cxx-clause>