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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_trunc_exp
//! @{
template<typename eT>
arma_warn_unused
inline
static
typename arma_real_only<eT>::result
trunc_exp(const eT x)
{
if(std::numeric_limits<eT>::is_iec559 && (x >= Datum<eT>::log_max ))
{
return std::numeric_limits<eT>::max();
}
else
{
return std::exp(x);
}
}
template<typename eT>
arma_warn_unused
inline
static
typename arma_integral_only<eT>::result
trunc_exp(const eT x)
{
return eT( trunc_exp( double(x) ) );
}
template<typename T>
arma_warn_unused
inline
static
std::complex<T>
trunc_exp(const std::complex<T>& x)
{
return std::polar( trunc_exp( x.real() ), x.imag() );
}
template<typename T1>
arma_warn_unused
arma_inline
typename enable_if2< is_arma_type<T1>::value, const eOp<T1, eop_trunc_exp> >::result
trunc_exp(const T1& A)
{
arma_extra_debug_sigprint();
return eOp<T1, eop_trunc_exp>(A);
}
template<typename T1>
arma_warn_unused
arma_inline
const eOpCube<T1, eop_trunc_exp>
trunc_exp(const BaseCube<typename T1::elem_type,T1>& A)
{
arma_extra_debug_sigprint();
return eOpCube<T1, eop_trunc_exp>(A.get_ref());
}
//! @}
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