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diff --git a/src/armadillo/include/armadillo_bits/fn_intersect.hpp b/src/armadillo/include/armadillo_bits/fn_intersect.hpp
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+++ b/src/armadillo/include/armadillo_bits/fn_intersect.hpp
@@ -0,0 +1,65 @@
+// SPDX-License-Identifier: Apache-2.0
+// 
+// Copyright 2008-2016 Conrad Sanderson (http://conradsanderson.id.au)
+// Copyright 2008-2016 National ICT Australia (NICTA)
+// 
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+// http://www.apache.org/licenses/LICENSE-2.0
+// 
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+// ------------------------------------------------------------------------
+
+
+//! \addtogroup fn_intersect
+//! @{
+
+
+
+template<typename T1, typename T2>
+arma_warn_unused
+inline
+typename
+enable_if2
+  <
+  ( is_arma_type<T1>::value && is_arma_type<T2>::value && is_same_type<typename T1::elem_type, typename T2::elem_type>::value ),
+  const Glue<T1, T2, glue_intersect>
+  >::result
+intersect
+  (
+  const T1& A,
+  const T2& B
+  )
+  {
+  arma_extra_debug_sigprint();
+  
+  return Glue<T1, T2, glue_intersect>(A, B);
+  }
+
+
+
+template<typename T1, typename T2>
+inline
+void
+intersect
+  (
+  Mat<typename T1::elem_type>&            C,
+  uvec&                                  iA,
+  uvec&                                  iB, 
+  const Base<typename T1::elem_type,T1>&  A,
+  const Base<typename T1::elem_type,T2>&  B
+  )
+  {
+  arma_extra_debug_sigprint();
+  
+  glue_intersect::apply(C, iA, iB, A.get_ref(), B.get_ref(), true);  
+  }
+
+
+
+//! @}