From eda5bc26f44ee9a6f83dcf8c91f17296d7fc509d Mon Sep 17 00:00:00 2001
From: Nao Pross <np@0hm.ch>
Date: Mon, 12 Feb 2024 14:52:43 +0100
Subject: Move into version control

---
 .../newarp_SparseGenMatProd_meat.hpp               | 63 ++++++++++++++++++++++
 1 file changed, 63 insertions(+)
 create mode 100644 src/armadillo/include/armadillo_bits/newarp_SparseGenMatProd_meat.hpp

(limited to 'src/armadillo/include/armadillo_bits/newarp_SparseGenMatProd_meat.hpp')

diff --git a/src/armadillo/include/armadillo_bits/newarp_SparseGenMatProd_meat.hpp b/src/armadillo/include/armadillo_bits/newarp_SparseGenMatProd_meat.hpp
new file mode 100644
index 0000000..bbe539a
--- /dev/null
+++ b/src/armadillo/include/armadillo_bits/newarp_SparseGenMatProd_meat.hpp
@@ -0,0 +1,63 @@
+// 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.
+// ------------------------------------------------------------------------
+
+
+namespace newarp
+{
+
+
+template<typename eT>
+inline
+SparseGenMatProd<eT>::SparseGenMatProd(const SpMat<eT>& mat_obj)
+  : op_mat(mat_obj)
+  , n_rows(mat_obj.n_rows)
+  , n_cols(mat_obj.n_cols)
+  {
+  arma_extra_debug_sigprint();
+  
+  op_mat_st = op_mat.st(); // pre-calculate transpose
+  }
+
+
+
+// Perform the matrix-vector multiplication operation \f$y=Ax\f$.
+// y_out = A * x_in
+template<typename eT>
+inline
+void
+SparseGenMatProd<eT>::perform_op(eT* x_in, eT* y_out) const
+  {
+  arma_extra_debug_sigprint();
+  
+  // // OLD METHOD
+  // 
+  // const Col<eT> x(x_in , n_cols, false, true);
+  //       Col<eT> y(y_out, n_rows, false, true);
+  // 
+  // y = op_mat * x;
+  
+  
+  // NEW METHOD
+  
+  const Row<eT> x(x_in , n_cols, false, true);
+        Row<eT> y(y_out, n_rows, false, true);
+  
+  y =  x * op_mat_st;
+  }
+
+
+}  // namespace newarp
-- 
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