view armadillo-3.900.4/include/armadillo_bits/fn_diagvec.hpp @ 49:1ec0e2823891

Switch to using subrepo copies of qm-dsp, nnls-chroma, vamp-plugin-sdk; update Armadillo version; assume build without external BLAS/LAPACK

// Copyright (C) 2008-2010 NICTA (www.nicta.com.au)
// Copyright (C) 2008-2010 Conrad Sanderson
// 
// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this
// file, You can obtain one at http://mozilla.org/MPL/2.0/.


//! \addtogroup fn_diagvec
//! @{


//! extract a diagonal from a matrix
template<typename T1>
arma_inline
const Op<T1, op_diagvec>
diagvec(const Base<typename T1::elem_type,T1>& X, const sword diag_id = 0)
  {
  arma_extra_debug_sigprint();
  
  return Op<T1, op_diagvec>(X.get_ref(), ((diag_id < 0) ? -diag_id : diag_id), ((diag_id < 0) ? 1 : 0) );
  }



//! @}