comparison armadillo-2.4.4/include/armadillo_bits/op_flip_meat.hpp @ 0:8b6102e2a9b0

Armadillo Library

+// Copyright (C) 2010 NICTA (www.nicta.com.au)
+// Copyright (C) 2010 Conrad Sanderson
+// 
+// This file is part of the Armadillo C++ library.
+// It is provided without any warranty of fitness
+// for any purpose. You can redistribute this file
+// and/or modify it under the terms of the GNU
+// Lesser General Public License (LGPL) as published
+// by the Free Software Foundation, either version 3
+// of the License or (at your option) any later version.
+// (see http://www.opensource.org/licenses for more info)
+
+
+//! \addtogroup op_flip
+//! @{
+
+
+
+template<typename T1>
+inline
+void
+op_flipud::apply(Mat<typename T1::elem_type>& out, const Op<T1,op_flipud>& in)
+  {
+  arma_extra_debug_sigprint();
+  
+  typedef typename T1::elem_type eT;
+  
+  const unwrap<T1>  tmp(in.m);
+  const Mat<eT> X = tmp.M;
+  
+  if(&out != &X)
+    {
+    out.copy_size(X);
+    
+    for(uword i=0; i<X.n_rows; ++i)
+      {
+      out.row(i) = X.row(X.n_rows-1 - i);
+      }
+    }
+  else
+    {
+    const uword N = X.n_rows / 2;
+    
+    for(uword i=0; i<N; ++i)
+      {
+      out.swap_rows(i, X.n_rows-1 - i);
+      }
+    }
+  }
+
+
+
+template<typename T1>
+inline
+void
+op_fliplr::apply(Mat<typename T1::elem_type>& out, const Op<T1,op_fliplr>& in)
+  {
+  arma_extra_debug_sigprint();
+  
+  typedef typename T1::elem_type eT;
+  
+  const unwrap<T1>  tmp(in.m);
+  const Mat<eT> X = tmp.M;
+  
+  if(&out != &X)
+    {
+    out.copy_size(X);
+    
+    for(uword i=0; i<X.n_cols; ++i)
+      {
+      out.col(i) = X.col(X.n_cols-1 - i);
+      }
+    }
+  else
+    {
+    const uword N = X.n_cols / 2;
+    
+    for(uword i=0; i<N; ++i)
+      {
+      out.swap_cols(i, X.n_cols-1 - i);
+      }
+    }
+  }
+
+
+
+//! @}