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

Armadillo Library

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/armadillo-2.4.4/include/armadillo_bits/fn_eps.hpp	Wed Apr 11 09:27:06 2012 +0100
@@ -0,0 +1,108 @@
+// Copyright (C) 2009-2010 NICTA (www.nicta.com.au)
+// Copyright (C) 2009-2010 Conrad Sanderson
+// Copyright (C) 2009-2010 Dimitrios Bouzas
+// 
+// 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_eps
+//! @{
+
+
+
+//! \brief
+//! eps version for non-complex matrices and vectors
+template<typename T1>
+inline
+const eOp<T1, eop_eps>
+eps(const Base<typename T1::elem_type, T1>& X, const typename arma_not_cx<typename T1::elem_type>::result* junk = 0)
+  {
+  arma_extra_debug_sigprint();
+  
+  arma_ignore(junk);
+  
+  typedef typename T1::elem_type eT;
+  
+  return eOp<T1, eop_eps>(X.get_ref());
+  }
+
+
+
+//! \brief
+//! eps version for complex matrices and vectors
+template<typename T1>
+inline
+Mat< typename T1::pod_type >
+eps(const Base< std::complex<typename T1::pod_type>, T1>& X, const typename arma_cx_only<typename T1::elem_type>::result* junk = 0)
+  {
+  arma_extra_debug_sigprint();
+  
+  arma_ignore(junk);
+  
+  typedef typename T1::pod_type   T;
+  typedef typename T1::elem_type eT;
+  
+  const unwrap<T1>   tmp(X.get_ref());
+  const Mat<eT>& A = tmp.M;
+  
+  Mat<T> out(A.n_rows, A.n_cols);
+  
+         T* out_mem = out.memptr();
+  const eT* A_mem   = A.memptr();
+  const uword n_elem  = A.n_elem;
+  
+  for(uword i=0; i<n_elem; ++i)
+    {
+    out_mem[i] = eop_aux::direct_eps( A_mem[i] );
+    }
+  
+  
+  return out;
+  }
+
+
+
+template<typename eT>
+arma_inline
+arma_warn_unused
+typename arma_integral_only<eT>::result
+eps(const eT& x)
+  {
+  arma_ignore(x);
+  
+  return eT(0);
+  }
+
+
+
+template<typename eT>
+arma_inline
+arma_warn_unused
+typename arma_float_only<eT>::result
+eps(const eT& x)
+  {
+  return eop_aux::direct_eps(x);
+  }
+
+
+
+template<typename T>
+arma_inline
+arma_warn_unused
+typename arma_float_only<T>::result
+eps(const std::complex<T>& x)
+  {
+  return eop_aux::direct_eps(x);
+  }
+
+
+
+//! @}