fn_trans.hpp

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00001 // Copyright (C) 2010 NICTA and the authors listed below
00002 // http://nicta.com.au
00003 // 
00004 // Authors:
00005 // - Conrad Sanderson (conradsand at ieee dot org)
00006 // 
00007 // This file is part of the Armadillo C++ library.
00008 // It is provided without any warranty of fitness
00009 // for any purpose. You can redistribute this file
00010 // and/or modify it under the terms of the GNU
00011 // Lesser General Public License (LGPL) as published
00012 // by the Free Software Foundation, either version 3
00013 // of the License or (at your option) any later version.
00014 // (see http://www.opensource.org/licenses for more info)
00015 
00016 
00017 //! \addtogroup fn_trans
00018 //! @{
00019 
00020 
00021 template<typename T1>
00022 arma_inline
00023 const Op<T1, op_trans>
00024 trans(const Base<typename T1::elem_type,T1>& X)
00025   {
00026   arma_extra_debug_sigprint();
00027   
00028   return Op<T1, op_trans>(X.get_ref());
00029   }
00030 
00031 
00032 
00033 //! two consecutive transpose operations cancel each other
00034 template<typename T1>
00035 arma_inline
00036 const T1&
00037 trans(const Op<T1, op_trans>& X)
00038   {
00039   arma_extra_debug_sigprint();
00040   arma_extra_debug_print("trans(): removing op_trans");
00041   
00042   return X.m;
00043   }
00044 
00045 
00046 
00047 //! transpose of a diagonal matrix (which is square) does nothing
00048 template<typename T1>
00049 arma_inline
00050 const Op<T1, op_diagmat>
00051 trans(const Op<T1, op_diagmat>& X)
00052   {
00053   arma_extra_debug_sigprint();
00054   arma_extra_debug_print("trans(): not applying op_trans to diagonal matrix");
00055   
00056   return X;
00057   }
00058 
00059 
00060 
00061 //! @}