diff --git a/src/private/pvoidvector.cpp b/src/private/pvoidvector.cpp
new file mode 100644
index 00000000..6b74805d
--- /dev/null
+++ b/src/private/pvoidvector.cpp
@@ -0,0 +1,107 @@
+///\file
+
+/******************************************************************************
+The MIT License(MIT)
+
+Embedded Template Library.
+https://github.com/ETLCPP/etl
+http://www.etlcpp.com
+
+Copyright(c) 2016 jwellbelove
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files(the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and / or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions :
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+******************************************************************************/
+
+#include "pvoidvector.h"
+
+namespace etl
+{
+  //***************************************************************************
+  /// Equal operator.
+  ///\param lhs Reference to the first vector.
+  ///\param rhs Reference to the second vector.
+  ///\return <b>true</b> if the arrays are equal, otherwise <b>false</b>
+  ///\ingroup vector
+  //***************************************************************************
+  bool operator ==(const etl::pvoidvector& lhs, const etl::pvoidvector& rhs)
+  {
+    return (lhs.size() == rhs.size()) && std::equal(lhs.begin(), lhs.end(), rhs.begin());
+  }
+
+  //***************************************************************************
+  /// Not equal operator.
+  ///\param lhs Reference to the first vector.
+  ///\param rhs Reference to the second vector.
+  ///\return <b>true</b> if the arrays are not equal, otherwise <b>false</b>
+  ///\ingroup vector
+  //***************************************************************************
+  bool operator !=(const etl::pvoidvector& lhs, const etl::pvoidvector& rhs)
+  {
+    return !(lhs == rhs);
+  }
+
+  //***************************************************************************
+  /// Less than operator.
+  ///\param lhs Reference to the first vector.
+  ///\param rhs Reference to the second vector.
+  ///\return <b>true</b> if the first vector is lexicographically less than the second, otherwise <b>false</b>
+  ///\ingroup vector
+  //***************************************************************************
+  inline bool operator <(const etl::pvoidvector& lhs, const etl::pvoidvector& rhs)
+  {
+    return std::lexicographical_compare(lhs.begin(), lhs.end(), rhs.begin(), rhs.end());
+  }
+
+  //***************************************************************************
+  /// Greater than operator.
+  ///\param lhs Reference to the first vector.
+  ///\param rhs Reference to the second vector.
+  ///\return <b>true</b> if the first vector is lexicographically greater than the second, otherwise <b>false</b>
+  ///\ingroup vector
+  //***************************************************************************
+  bool operator >(const etl::pvoidvector& lhs, const etl::pvoidvector& rhs)
+  {
+    return (rhs < lhs);
+  }
+
+  //***************************************************************************
+  /// Less than or equal operator.
+  ///\param lhs Reference to the first vector.
+  ///\param rhs Reference to the second vector.
+  ///\return <b>true</b> if the first vector is lexicographically less than or equal to the second, otherwise <b>false</b>
+  ///\ingroup vector
+  //***************************************************************************
+  bool operator <=(const etl::pvoidvector& lhs, const etl::pvoidvector& rhs)
+  {
+    return !(lhs > rhs);
+  }
+
+  //***************************************************************************
+  /// Greater than or equal operator.
+  ///\param lhs Reference to the first vector.
+  ///\param rhs Reference to the second vector.
+  ///\return <b>true</b> if the first vector is lexicographically greater than or equal to the second, otherwise <b>false</b>
+  ///\ingroup vector
+  //***************************************************************************
+  bool operator >=(const etl::pvoidvector& lhs, const etl::pvoidvector& rhs)
+  {
+    return !(lhs < rhs);
+  }
+}
+