Plan 9 from Bell Labs’s /usr/web/sources/contrib/fernan/nhc98/docs/fig4.html

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<table borderwidth=0 border=1>
  <tr>
    <th align=left>
      standard DIS
    </th><th align=left>
      Haskell type
    </th><th align=left>
      C type
    </th><th align=left>
      comments
    </th>
  </tr><tr>
    <td align=left>
      int i
    </td><td align=left>
      Int
    </td><td align=left>
      <tt>int</tt>
    </td><td align=left>
      
    </td>
  </tr><tr>
    <td align=left>
      char c
    </td><td align=left>
      Char
    </td><td align=left>
      <tt>char</tt>
    </td><td align=left>
      
    </td>
  </tr><tr>
    <td align=left>
      bool b
    </td><td align=left>
      Bool
    </td><td align=left>
      <tt>int</tt>
    </td><td align=left>
      0 for False, 1 for True
    </td>
  </tr><tr>
    <td align=left>
      float f
    </td><td align=left>
      Float
    </td><td align=left>
      <tt>float</tt>
    </td><td align=left>
      
    </td>
  </tr><tr>
    <td align=left>
      double d
    </td><td align=left>
      Double
    </td><td align=left>
      <tt>double</tt>
    </td><td align=left>
      
    </td>
  </tr><tr>
    <td align=left>
      string s
    </td><td align=left>
      String
    </td><td align=left>
      <tt>char*</tt>
    </td><td align=left>
      Persistence not required in either direction
    </td>
  </tr><tr>
    <td align=left>
      addr a
    </td><td align=left>
      Addr
    </td><td align=left>
      <tt>void*</tt>
    </td><td align=left>
      An immovable C address
    </td>
  </tr><tr>
    <td align=left>
      foreign f r
    </td><td align=left>
      ForeignObj
    </td><td align=left>
      <tt>void*</tt>
    </td><td align=left>
      r is the finalisation routine
    </td>
  </tr><tr>
    <td align=left>
      stable s
    </td><td align=left>
      a
    </td><td align=left>
      <tt>HaskellRef</tt>
    </td><td align=left>
      HaskellRef is just an index into the stable pointer table.
    </td>
  </tr>
</table>

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