92 lines
1.9 KiB
C++
92 lines
1.9 KiB
C++
// Copyright 2008-2016 Conrad Sanderson (http://conradsanderson.id.au)
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// Copyright 2008-2016 National ICT Australia (NICTA)
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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// ------------------------------------------------------------------------
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//! \addtogroup fn_trunc_exp
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//! @{
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template<typename eT>
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arma_warn_unused
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inline
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static
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typename arma_real_only<eT>::result
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trunc_exp(const eT x)
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{
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if(std::numeric_limits<eT>::is_iec559 && (x >= Datum<eT>::log_max ))
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{
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return std::numeric_limits<eT>::max();
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}
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else
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{
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return std::exp(x);
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}
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}
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template<typename eT>
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arma_warn_unused
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inline
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static
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typename arma_integral_only<eT>::result
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trunc_exp(const eT x)
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{
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return eT( trunc_exp( double(x) ) );
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}
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template<typename T>
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arma_warn_unused
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inline
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static
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std::complex<T>
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trunc_exp(const std::complex<T>& x)
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{
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return std::polar( trunc_exp( x.real() ), x.imag() );
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}
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template<typename T1>
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arma_warn_unused
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arma_inline
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typename enable_if2< is_arma_type<T1>::value, const eOp<T1, eop_trunc_exp> >::result
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trunc_exp(const T1& A)
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{
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arma_extra_debug_sigprint();
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return eOp<T1, eop_trunc_exp>(A);
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}
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template<typename T1>
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arma_warn_unused
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arma_inline
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const eOpCube<T1, eop_trunc_exp>
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trunc_exp(const BaseCube<typename T1::elem_type,T1>& A)
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{
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arma_extra_debug_sigprint();
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return eOpCube<T1, eop_trunc_exp>(A.get_ref());
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}
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//! @}
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