Chris@49: // Copyright (C) 2012 Ryan Curtin
Chris@49: // Copyright (C) 2012 Conrad Sanderson
Chris@49: //
Chris@49: // This Source Code Form is subject to the terms of the Mozilla Public
Chris@49: // License, v. 2.0. If a copy of the MPL was not distributed with this
Chris@49: // file, You can obtain one at http://mozilla.org/MPL/2.0/.
Chris@49: 
Chris@49: 
Chris@49: //! \addtogroup spop_mean
Chris@49: //! @{
Chris@49: 
Chris@49: 
Chris@49: //! Class for finding mean values of a sparse matrix
Chris@49: class spop_mean
Chris@49:   {
Chris@49:   public:
Chris@49: 
Chris@49:   // Apply mean into an output sparse matrix (or vector).
Chris@49:   template<typename T1>
Chris@49:   inline static void apply(SpMat<typename T1::elem_type>& out, const SpOp<T1, spop_mean>& in);
Chris@49: 
Chris@49:   template<typename T1>
Chris@49:   inline static void apply_noalias(SpMat<typename T1::elem_type>& out, const SpProxy<T1>& p, const uword dim);
Chris@49:   
Chris@49:   // Take direct mean of a set of values.  Length of array and number of values can be different.
Chris@49:   template<typename eT>
Chris@49:   inline static eT direct_mean(const eT* const X, const uword length, const uword N);
Chris@49: 
Chris@49:   template<typename eT>
Chris@49:   inline static eT direct_mean_robust(const eT* const X, const uword length, const uword N);
Chris@49: 
Chris@49:   template<typename T1>
Chris@49:   inline static typename T1::elem_type mean_all(const SpBase<typename T1::elem_type, T1>& X);
Chris@49: 
Chris@49:   // Take the mean using an iterator.
Chris@49:   template<typename T1, typename eT>
Chris@49:   inline static eT iterator_mean(T1& it, const T1& end, const uword n_zero, const eT junk);
Chris@49: 
Chris@49:   template<typename T1, typename eT>
Chris@49:   inline static eT iterator_mean_robust(T1& it, const T1& end, const uword n_zero, const eT junk);
Chris@49:   };
Chris@49: 
Chris@49: 
Chris@49: 
Chris@49: //! @}