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// 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);
}
//! @}
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