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_shift_meat.hpp       | 181 +++++++++++++++++++++
 1 file changed, 181 insertions(+)
 create mode 100644 src/armadillo/include/armadillo_bits/op_shift_meat.hpp

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

diff --git a/src/armadillo/include/armadillo_bits/op_shift_meat.hpp b/src/armadillo/include/armadillo_bits/op_shift_meat.hpp
new file mode 100644
index 0000000..b369b5d
--- /dev/null
+++ b/src/armadillo/include/armadillo_bits/op_shift_meat.hpp
@@ -0,0 +1,181 @@
+// 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_shift
+//! @{
+
+
+
+template<typename T1>
+inline
+void
+op_shift_vec::apply(Mat<typename T1::elem_type>& out, const Op<T1,op_shift_vec>& in)
+  {
+  arma_extra_debug_sigprint();
+  
+  typedef typename T1::elem_type eT;
+  
+  const quasi_unwrap<T1> U(in.m);
+  
+  const uword len = in.aux_uword_a;
+  const uword neg = in.aux_uword_b;
+  
+  const uword dim = (T1::is_xvec) ? uword(U.M.is_rowvec() ? 1 : 0) : uword((T1::is_row) ? 1 : 0);
+  
+  if(U.is_alias(out))
+    {
+    Mat<eT> tmp;
+    
+    op_shift::apply_noalias(tmp, U.M, len, neg, dim);
+    
+    out.steal_mem(tmp);
+    }
+  else
+    {
+    op_shift::apply_noalias(out, U.M, len, neg, dim);
+    }
+  }
+
+
+
+template<typename eT>
+inline
+void
+op_shift::apply_noalias(Mat<eT>& out, const Mat<eT>& X, const uword len, const uword neg, const uword dim)
+  {
+  arma_extra_debug_sigprint();
+  
+  arma_debug_check_bounds( ((dim == 0) && (len >= X.n_rows)), "shift(): shift amount out of bounds" );
+  arma_debug_check_bounds( ((dim == 1) && (len >= X.n_cols)), "shift(): shift amount out of bounds" );
+  
+  out.copy_size(X);
+  
+  const uword X_n_rows = X.n_rows;
+  const uword X_n_cols = X.n_cols;
+  
+  if(dim == 0)
+    {
+    if(neg == 0)
+      {
+      for(uword col=0; col < X_n_cols; ++col)
+        {
+              eT* out_ptr = out.colptr(col);
+        const eT*   X_ptr =   X.colptr(col);
+        
+        for(uword out_row=len, row=0; row < (X_n_rows - len); ++row, ++out_row)
+          {
+          out_ptr[out_row] = X_ptr[row];
+          }
+        
+        for(uword out_row=0, row=(X_n_rows - len); row < X_n_rows; ++row, ++out_row)
+          {
+          out_ptr[out_row] = X_ptr[row];
+          }
+        }
+      }
+    else
+    if(neg == 1)
+      {
+      for(uword col=0; col < X_n_cols; ++col)
+        {
+              eT* out_ptr = out.colptr(col);
+        const eT*   X_ptr =   X.colptr(col);
+        
+        for(uword out_row=0, row=len; row < X_n_rows; ++row, ++out_row)
+          {
+          out_ptr[out_row] = X_ptr[row];
+          }
+        
+        for(uword out_row=(X_n_rows-len), row=0; row < len; ++row, ++out_row)
+          {
+          out_ptr[out_row] = X_ptr[row];
+          }
+        }
+      }
+    }
+  else
+  if(dim == 1)
+    {
+    if(neg == 0)
+      {
+      if(X_n_rows == 1)
+        {
+              eT* out_ptr = out.memptr();
+        const eT*   X_ptr =   X.memptr();
+        
+        for(uword out_col=len, col=0; col < (X_n_cols - len); ++col, ++out_col)
+          {
+          out_ptr[out_col] = X_ptr[col];
+          }
+        
+        for(uword out_col=0, col=(X_n_cols - len); col < X_n_cols; ++col, ++out_col)
+          {
+          out_ptr[out_col] = X_ptr[col];
+          }
+        }
+      else
+        {
+        for(uword out_col=len, col=0; col < (X_n_cols - len); ++col, ++out_col)
+          {
+          arrayops::copy( out.colptr(out_col), X.colptr(col), X_n_rows );
+          }
+        
+        for(uword out_col=0, col=(X_n_cols - len); col < X_n_cols; ++col, ++out_col)
+          {
+          arrayops::copy( out.colptr(out_col), X.colptr(col), X_n_rows );
+          }
+        }
+      }
+    else
+    if(neg == 1)
+      {
+      if(X_n_rows == 1)
+        {
+              eT* out_ptr = out.memptr();
+        const eT*   X_ptr =   X.memptr();
+        
+        for(uword out_col=0, col=len; col < X_n_cols; ++col, ++out_col)
+          {
+          out_ptr[out_col] = X_ptr[col];
+          }
+        
+        for(uword out_col=(X_n_cols-len), col=0; col < len; ++col, ++out_col)
+          {
+          out_ptr[out_col] = X_ptr[col];
+          }
+        }
+      else
+        {
+        for(uword out_col=0, col=len; col < X_n_cols; ++col, ++out_col)
+          {
+          arrayops::copy( out.colptr(out_col), X.colptr(col), X_n_rows );
+          }
+        
+        for(uword out_col=(X_n_cols-len), col=0; col < len; ++col, ++out_col)
+          {
+          arrayops::copy( out.colptr(out_col), X.colptr(col), X_n_rows );
+          }
+        }
+      }
+    }
+  }
+
+
+
+//! @}
-- 
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