Chris@49: // Copyright (C) 2009-2012 NICTA (www.nicta.com.au)
Chris@49: // Copyright (C) 2009-2012 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 op_var
Chris@49: //! @{
Chris@49: 
Chris@49: 
Chris@49: 
Chris@49: //! Class for finding variance values of a matrix
Chris@49: class op_var
Chris@49:   {
Chris@49:   public:
Chris@49:   
Chris@49:   template<typename T1>
Chris@49:   inline static void apply(Mat<typename T1::pod_type>& out, const mtOp<typename T1::pod_type, T1, op_var>& in);
Chris@49:   
Chris@49:   
Chris@49:   //
Chris@49:   
Chris@49:   template<typename eT>
Chris@49:   inline static typename get_pod_type<eT>::result var_vec(const subview_col<eT>& X, const uword norm_type = 0);
Chris@49: 
Chris@49:   template<typename eT>
Chris@49:   inline static typename get_pod_type<eT>::result var_vec(const subview_row<eT>& X, const uword norm_type = 0);
Chris@49:   
Chris@49:   template<typename T1>
Chris@49:   inline static typename T1::pod_type var_vec(const Base<typename T1::elem_type, T1>& X, const uword norm_type = 0);
Chris@49:   
Chris@49:   
Chris@49:   //
Chris@49:   
Chris@49:   template<typename eT>
Chris@49:   inline static eT direct_var(const eT* const X, const uword N, const uword norm_type = 0);
Chris@49:   
Chris@49:   template<typename eT>
Chris@49:   inline static eT direct_var_robust(const eT* const X, const uword N, const uword norm_type = 0);
Chris@49:   
Chris@49:   
Chris@49:   //
Chris@49:   
Chris@49:   template<typename T>
Chris@49:   inline static  T direct_var(const std::complex<T>* const X, const uword N, const uword norm_type = 0);
Chris@49:   
Chris@49:   template<typename T>
Chris@49:   inline static  T direct_var_robust(const std::complex<T>* const X, const uword N, const uword norm_type = 0);
Chris@49:   };
Chris@49: 
Chris@49: 
Chris@49: 
Chris@49: //! @}