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

---
 .../include/armadillo_bits/op_dotext_meat.hpp      | 214 +++++++++++++++++++++
 1 file changed, 214 insertions(+)
 create mode 100644 src/armadillo/include/armadillo_bits/op_dotext_meat.hpp

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

diff --git a/src/armadillo/include/armadillo_bits/op_dotext_meat.hpp b/src/armadillo/include/armadillo_bits/op_dotext_meat.hpp
new file mode 100644
index 0000000..c190b2c
--- /dev/null
+++ b/src/armadillo/include/armadillo_bits/op_dotext_meat.hpp
@@ -0,0 +1,214 @@
+// 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 op_dotext
+//! @{
+
+
+
+template<typename eT>
+inline
+eT
+op_dotext::direct_rowvec_mat_colvec
+  (
+  const eT*      A_mem,
+  const Mat<eT>& B,
+  const eT*      C_mem
+  )
+  {
+  arma_extra_debug_sigprint();
+  
+  const uword cost_AB = B.n_cols;
+  const uword cost_BC = B.n_rows;
+  
+  if(cost_AB <= cost_BC)
+    {
+    podarray<eT> tmp(B.n_cols);
+    
+    for(uword col=0; col<B.n_cols; ++col)
+      {
+      const eT* B_coldata = B.colptr(col);
+      
+      eT val = eT(0);
+      for(uword i=0; i<B.n_rows; ++i)
+        {
+        val += A_mem[i] * B_coldata[i];
+        }
+        
+      tmp[col] = val;
+      }
+    
+    return op_dot::direct_dot(B.n_cols, tmp.mem, C_mem);
+    }
+  else
+    {
+    podarray<eT> tmp(B.n_rows);
+    
+    for(uword row=0; row<B.n_rows; ++row)
+      {
+      eT val = eT(0);
+      for(uword col=0; col<B.n_cols; ++col)
+        {
+        val += B.at(row,col) * C_mem[col];
+        }
+      
+      tmp[row] = val;
+      }
+    
+    return op_dot::direct_dot(B.n_rows, A_mem, tmp.mem);
+    }
+  
+  
+  }
+
+
+
+template<typename eT>
+inline
+eT
+op_dotext::direct_rowvec_transmat_colvec
+  (
+  const eT*      A_mem,
+  const Mat<eT>& B,
+  const eT*      C_mem
+  )
+  {
+  arma_extra_debug_sigprint();
+  
+  const uword cost_AB = B.n_rows;
+  const uword cost_BC = B.n_cols;
+  
+  if(cost_AB <= cost_BC)
+    {
+    podarray<eT> tmp(B.n_rows);
+    
+    for(uword row=0; row<B.n_rows; ++row)
+      {
+      eT val = eT(0);
+      
+      for(uword i=0; i<B.n_cols; ++i)
+        {
+        val += A_mem[i] * B.at(row,i);
+        }
+        
+      tmp[row] = val;
+      }
+    
+    return op_dot::direct_dot(B.n_rows, tmp.mem, C_mem);
+    }
+  else
+    {
+    podarray<eT> tmp(B.n_cols);
+    
+    for(uword col=0; col<B.n_cols; ++col)
+      {
+      const eT* B_coldata = B.colptr(col);
+      
+      eT val = eT(0);
+      
+      for(uword i=0; i<B.n_rows; ++i)
+        {
+        val += B_coldata[i] * C_mem[i];
+        }
+      
+      tmp[col] = val;
+      }
+    
+    return op_dot::direct_dot(B.n_cols, A_mem, tmp.mem);
+    }
+  
+  
+  }
+
+
+
+template<typename eT>
+inline
+eT
+op_dotext::direct_rowvec_diagmat_colvec
+  (
+  const eT*      A_mem,
+  const Mat<eT>& B,
+  const eT*      C_mem
+  )
+  {
+  arma_extra_debug_sigprint();
+  
+  eT val = eT(0);
+
+  for(uword i=0; i<B.n_rows; ++i)
+    {
+    val += A_mem[i] * B.at(i,i) * C_mem[i];
+    }
+
+  return val;
+  }
+
+
+
+template<typename eT>
+inline
+eT
+op_dotext::direct_rowvec_invdiagmat_colvec
+  (
+  const eT*      A_mem,
+  const Mat<eT>& B,
+  const eT*      C_mem
+  )
+  {
+  arma_extra_debug_sigprint();
+  
+  eT val = eT(0);
+
+  for(uword i=0; i<B.n_rows; ++i)
+    {
+    val += (A_mem[i] * C_mem[i]) / B.at(i,i);
+    }
+
+  return val;
+  }
+
+
+
+template<typename eT>
+inline
+eT
+op_dotext::direct_rowvec_invdiagvec_colvec
+  (
+  const eT*      A_mem,
+  const Mat<eT>& B,
+  const eT*      C_mem
+  )
+  {
+  arma_extra_debug_sigprint();
+  
+  const eT* B_mem = B.mem;
+  
+  eT val = eT(0);
+
+  for(uword i=0; i<B.n_elem; ++i)
+    {
+    val += (A_mem[i] * C_mem[i]) / B_mem[i];
+    }
+
+  return val;
+  }
+
+
+
+//! @}
-- 
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