1 files changed, 64 insertions, 0 deletions
diff --git a/src/armadillo/include/armadillo_bits/fn_diagvec.hpp b/src/armadillo/include/armadillo_bits/fn_diagvec.hpp
new file mode 100644
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--- /dev/null
+++ b/src/armadillo/include/armadillo_bits/fn_diagvec.hpp
@@ -0,0 +1,64 @@
+// 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_diagvec
+//! @{
+
+
+//! extract main diagonal from matrix
+template<typename T1>
+arma_warn_unused
+arma_inline
+const Op<T1, op_diagvec>
+diagvec(const Base<typename T1::elem_type,T1>& X)
+  {
+  arma_extra_debug_sigprint();
+  
+  return Op<T1, op_diagvec>(X.get_ref());
+  }
+
+
+
+//! extract arbitrary diagonal from matrix
+template<typename T1>
+arma_warn_unused
+arma_inline
+const Op<T1, op_diagvec2>
+diagvec(const Base<typename T1::elem_type,T1>& X, const sword diag_id)
+  {
+  arma_extra_debug_sigprint();
+  
+  return Op<T1, op_diagvec2>(X.get_ref(), ((diag_id < 0) ? -diag_id : diag_id), ((diag_id < 0) ? 1 : 0) );
+  }
+
+
+
+template<typename T1>
+arma_warn_unused
+arma_inline
+const SpOp<T1, spop_diagvec>
+diagvec(const SpBase<typename T1::elem_type,T1>& X, const sword diag_id = 0)
+  {
+  arma_extra_debug_sigprint();
+  
+  return SpOp<T1, spop_diagvec>(X.get_ref(), ((diag_id < 0) ? -diag_id : diag_id), ((diag_id < 0) ? 1 : 0) );
+  }
+
+
+
+//! @}