88 lines
1.5 KiB
C++
88 lines
1.5 KiB
C++
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// Copyright (C) 2008-2012 National ICT Australia (NICTA)
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//
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// This Source Code Form is subject to the terms of the Mozilla Public
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// License, v. 2.0. If a copy of the MPL was not distributed with this
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// file, You can obtain one at http://mozilla.org/MPL/2.0/.
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// -------------------------------------------------------------------
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//
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// Written by Conrad Sanderson - http://conradsanderson.id.au
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//! \addtogroup fn_trunc_log
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//! @{
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template<typename eT>
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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_log(const eT x)
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{
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if(std::numeric_limits<eT>::is_iec559)
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{
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if(x == std::numeric_limits<eT>::infinity())
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{
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return Math<eT>::log_max();
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}
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else
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{
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return (x <= eT(0)) ? Math<eT>::log_min() : std::log(x);
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}
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}
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else
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{
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return std::log(x);
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}
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}
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template<typename eT>
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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_log(const eT x)
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{
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return eT( trunc_log( double(x) ) );
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}
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template<typename T>
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inline
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static
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std::complex<T>
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trunc_log(const std::complex<T>& x)
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{
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return std::complex<T>( trunc_log( std::abs(x) ), std::arg(x) );
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}
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template<typename T1>
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arma_inline
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const eOp<T1, eop_trunc_log>
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trunc_log(const Base<typename T1::elem_type,T1>& A)
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{
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arma_extra_debug_sigprint();
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return eOp<T1, eop_trunc_log>(A.get_ref());
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}
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template<typename T1>
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arma_inline
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const eOpCube<T1, eop_trunc_log>
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trunc_log(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_log>(A.get_ref());
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}
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//! @}
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