Chris@49: // Copyright (C) 2009-2010 NICTA (www.nicta.com.au)
Chris@49: // Copyright (C) 2009-2010 Conrad Sanderson
Chris@49: // Copyright (C) 2009-2010 Dimitrios Bouzas
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: 
Chris@49: //! \addtogroup fn_eps
Chris@49: //! @{
Chris@49: 
Chris@49: 
Chris@49: 
Chris@49: //! \brief
Chris@49: //! eps version for non-complex matrices and vectors
Chris@49: template<typename T1>
Chris@49: inline
Chris@49: const eOp<T1, eop_eps>
Chris@49: eps(const Base<typename T1::elem_type, T1>& X, const typename arma_not_cx<typename T1::elem_type>::result* junk = 0)
Chris@49:   {
Chris@49:   arma_extra_debug_sigprint();
Chris@49:   arma_ignore(junk);
Chris@49:   
Chris@49:   return eOp<T1, eop_eps>(X.get_ref());
Chris@49:   }
Chris@49: 
Chris@49: 
Chris@49: 
Chris@49: //! \brief
Chris@49: //! eps version for complex matrices and vectors
Chris@49: template<typename T1>
Chris@49: inline
Chris@49: Mat< typename T1::pod_type >
Chris@49: eps(const Base< std::complex<typename T1::pod_type>, T1>& X, const typename arma_cx_only<typename T1::elem_type>::result* junk = 0)
Chris@49:   {
Chris@49:   arma_extra_debug_sigprint();
Chris@49:   
Chris@49:   arma_ignore(junk);
Chris@49:   
Chris@49:   typedef typename T1::pod_type   T;
Chris@49:   typedef typename T1::elem_type eT;
Chris@49:   
Chris@49:   const unwrap<T1>   tmp(X.get_ref());
Chris@49:   const Mat<eT>& A = tmp.M;
Chris@49:   
Chris@49:   Mat<T> out(A.n_rows, A.n_cols);
Chris@49:   
Chris@49:          T* out_mem = out.memptr();
Chris@49:   const eT* A_mem   = A.memptr();
Chris@49:   const uword n_elem  = A.n_elem;
Chris@49:   
Chris@49:   for(uword i=0; i<n_elem; ++i)
Chris@49:     {
Chris@49:     out_mem[i] = eop_aux::direct_eps( A_mem[i] );
Chris@49:     }
Chris@49:   
Chris@49:   
Chris@49:   return out;
Chris@49:   }
Chris@49: 
Chris@49: 
Chris@49: 
Chris@49: template<typename eT>
Chris@49: arma_inline
Chris@49: arma_warn_unused
Chris@49: typename arma_integral_only<eT>::result
Chris@49: eps(const eT& x)
Chris@49:   {
Chris@49:   arma_ignore(x);
Chris@49:   
Chris@49:   return eT(0);
Chris@49:   }
Chris@49: 
Chris@49: 
Chris@49: 
Chris@49: template<typename eT>
Chris@49: arma_inline
Chris@49: arma_warn_unused
Chris@49: typename arma_real_only<eT>::result
Chris@49: eps(const eT& x)
Chris@49:   {
Chris@49:   return eop_aux::direct_eps(x);
Chris@49:   }
Chris@49: 
Chris@49: 
Chris@49: 
Chris@49: template<typename T>
Chris@49: arma_inline
Chris@49: arma_warn_unused
Chris@49: typename arma_real_only<T>::result
Chris@49: eps(const std::complex<T>& x)
Chris@49:   {
Chris@49:   return eop_aux::direct_eps(x);
Chris@49:   }
Chris@49: 
Chris@49: 
Chris@49: 
Chris@49: //! @}