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 fn_spones
Chris@49: //! @{
Chris@49: 
Chris@49: 
Chris@49: 
Chris@49: //! Generate a sparse matrix with the non-zero values in the same locations as in the given sparse matrix X,
Chris@49: //! with the non-zero values set to one
Chris@49: template<typename T1>
Chris@49: inline
Chris@49: SpMat<typename T1::elem_type>
Chris@49: spones(const SpBase<typename T1::elem_type, T1>& X)
Chris@49:   {
Chris@49:   arma_extra_debug_sigprint();
Chris@49:   
Chris@49:   typedef typename T1::elem_type eT;
Chris@49:   
Chris@49:   SpMat<eT> out( X.get_ref() );
Chris@49:   
Chris@49:   const uword nnz = out.n_nonzero;
Chris@49:   
Chris@49:   eT* values = access::rwp(out.values);
Chris@49:   
Chris@49:   for(uword i=0; i < nnz; ++i)
Chris@49:     {
Chris@49:     values[i] = eT(1);
Chris@49:     }
Chris@49:   
Chris@49:   return out;
Chris@49:   }
Chris@49: 
Chris@49: 
Chris@49: 
Chris@49: //! @}