op_var_proto.hpp

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00001 // Copyright (C) 2009 NICTA
00002 // 
00003 // Authors:
00004 // - Conrad Sanderson (conradsand at ieee dot org)
00005 // 
00006 // This file is part of the Armadillo C++ library.
00007 // It is provided without any warranty of fitness
00008 // for any purpose. You can redistribute this file
00009 // and/or modify it under the terms of the GNU
00010 // Lesser General Public License (LGPL) as published
00011 // by the Free Software Foundation, either version 3
00012 // of the License or (at your option) any later version.
00013 // (see http://www.opensource.org/licenses for more info)
00014 
00015 
00016 //! \addtogroup op_var
00017 //! @{
00018 
00019 
00020 
00021 //! Class for finding variance values of a matrix
00022 class op_var
00023   {
00024   public:
00025   
00026   template<typename eT>
00027   inline static eT direct_var(const eT* const X, const u32 N, const u32 norm_type = 0);
00028   
00029   template<typename T>
00030   inline static T direct_var(const std::complex<T>* const X, const u32 N, const u32 norm_type = 0);
00031   
00032   
00033   
00034   template<typename eT>
00035   inline static void apply(Mat<eT>& out, const Mat<eT>& X, const u32 norm_type, const u32 dim);
00036   
00037   template<typename T>
00038   inline static void apply(Mat<T>& out, const Mat< std::complex<T> >& X, const u32 norm_type, const u32 dim);
00039   
00040   
00041   
00042   template<typename eT>
00043   inline static eT direct_var(const subview<eT>& X, const u32 norm_type = 0);
00044   
00045   template<typename T>
00046   inline static T direct_var(const subview< std::complex<T> >& X, const u32 norm_type = 0);
00047   
00048   
00049   template<typename eT>
00050   inline static eT direct_var(const diagview<eT>& X, const u32 norm_type = 0);
00051   
00052   template<typename T>
00053   inline static T direct_var(const diagview< std::complex<T> >& X, const u32 norm_type = 0);
00054   
00055   };
00056 
00057 
00058 
00059 //! @}