1 files changed, 106 insertions, 0 deletions
diff --git a/src/armadillo/include/armadillo_bits/fn_eps.hpp b/src/armadillo/include/armadillo_bits/fn_eps.hpp
new file mode 100644
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--- /dev/null
+++ b/src/armadillo/include/armadillo_bits/fn_eps.hpp
@@ -0,0 +1,106 @@
+// SPDX-License-Identifier: Apache-2.0
+// 
+// Copyright 2008-2016 Conrad Sanderson (http://conradsanderson.id.au)
+// Copyright 2008-2016 National ICT Australia (NICTA)
+// 
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+// http://www.apache.org/licenses/LICENSE-2.0
+// 
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+// ------------------------------------------------------------------------
+
+
+
+//! \addtogroup fn_eps
+//! @{
+
+
+
+template<typename T1>
+arma_warn_unused
+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 = nullptr)
+  {
+  arma_extra_debug_sigprint();
+  arma_ignore(junk);
+  
+  return eOp<T1, eop_eps>(X.get_ref());
+  }
+
+
+
+template<typename T1>
+arma_warn_unused
+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 = nullptr)
+  {
+  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, arma_nozeros_indicator());
+  
+         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_warn_unused
+arma_inline
+typename arma_integral_only<eT>::result
+eps(const eT& x)
+  {
+  arma_ignore(x);
+  
+  return eT(0);
+  }
+
+
+
+template<typename eT>
+arma_warn_unused
+arma_inline
+typename arma_real_only<eT>::result
+eps(const eT& x)
+  {
+  return eop_aux::direct_eps(x);
+  }
+
+
+
+template<typename T>
+arma_warn_unused
+arma_inline
+typename arma_real_only<T>::result
+eps(const std::complex<T>& x)
+  {
+  return eop_aux::direct_eps(x);
+  }
+
+
+
+//! @}