op_var_proto.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 op_var
00018 //! @{
00019 
00020 
00021 
00022 //! Class for finding variance values of a matrix
00023 class op_var
00024   {
00025   public:
00026   
00027   template<typename eT>
00028   inline static eT direct_var(const eT* const X, const u32 N, const u32 norm_type = 0);
00029   
00030   template<typename T>
00031   inline static T direct_var(const std::complex<T>* const X, const u32 N, const u32 norm_type = 0);
00032   
00033   
00034   template<typename eT>
00035   inline static typename get_pod_type<eT>::result direct_var(const subview_row<eT>& X, const u32 norm_type = 0);
00036   
00037   template<typename eT>
00038   inline static typename get_pod_type<eT>::result direct_var(const subview_col<eT>& X, const u32 norm_type = 0);
00039   
00040   template<typename eT>
00041   inline static typename get_pod_type<eT>::result direct_var(const diagview<eT>& X, const u32 norm_type = 0);
00042   
00043   
00044   template<typename eT>
00045   inline static void apply(Mat< typename get_pod_type<eT>::result >& out, const Mat<eT>& X, const u32 norm_type, const u32 dim);
00046   
00047   };
00048 
00049 
00050 
00051 //! @}