diff armadillo-2.4.4/include/armadillo_bits/fn_diagvec.hpp @ 0:8b6102e2a9b0

Armadillo Library

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/armadillo-2.4.4/include/armadillo_bits/fn_diagvec.hpp	Wed Apr 11 09:27:06 2012 +0100
@@ -0,0 +1,31 @@
+// Copyright (C) 2008-2010 NICTA (www.nicta.com.au)
+// Copyright (C) 2008-2010 Conrad Sanderson
+// 
+// This file is part of the Armadillo C++ library.
+// It is provided without any warranty of fitness
+// for any purpose. You can redistribute this file
+// and/or modify it under the terms of the GNU
+// Lesser General Public License (LGPL) as published
+// by the Free Software Foundation, either version 3
+// of the License or (at your option) any later version.
+// (see http://www.opensource.org/licenses for more info)
+
+
+//! \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) );
+  }
+
+
+
+//! @}