Chris@49: // Copyright (C) 2008-2010 NICTA (www.nicta.com.au)
Chris@49: // Copyright (C) 2008-2012 Conrad Sanderson
Chris@49: // 
Chris@49: // This Source Code Form is subject to the terms of the Mozilla Public
Chris@49: // License, v. 2.0. If a copy of the MPL was not distributed with this
Chris@49: // file, You can obtain one at http://mozilla.org/MPL/2.0/.
Chris@49: 
Chris@49: 
Chris@49: //! \addtogroup fn_trunc_log
Chris@49: //! @{
Chris@49: 
Chris@49: 
Chris@49: 
Chris@49: template<typename eT>
Chris@49: inline
Chris@49: static
Chris@49: typename arma_real_only<eT>::result
Chris@49: trunc_log(const eT x)
Chris@49:   {
Chris@49:   if(std::numeric_limits<eT>::is_iec559)
Chris@49:     {
Chris@49:     if(x == std::numeric_limits<eT>::infinity())
Chris@49:       {
Chris@49:       return Math<eT>::log_max();
Chris@49:       }
Chris@49:     else
Chris@49:       {
Chris@49:       return (x <= eT(0)) ? Math<eT>::log_min() : std::log(x);
Chris@49:       }
Chris@49:     }
Chris@49:   else
Chris@49:     {
Chris@49:     return std::log(x);
Chris@49:     }
Chris@49:   }
Chris@49: 
Chris@49: 
Chris@49: 
Chris@49: template<typename eT>
Chris@49: inline
Chris@49: static
Chris@49: typename arma_integral_only<eT>::result
Chris@49: trunc_log(const eT x)
Chris@49:   {
Chris@49:   return eT( trunc_log( double(x) ) );
Chris@49:   }
Chris@49: 
Chris@49: 
Chris@49: 
Chris@49: template<typename T>
Chris@49: inline
Chris@49: static
Chris@49: std::complex<T>
Chris@49: trunc_log(const std::complex<T>& x)
Chris@49:   {
Chris@49:   return std::complex<T>( trunc_log( std::abs(x) ), std::arg(x) );
Chris@49:   }
Chris@49: 
Chris@49: 
Chris@49: 
Chris@49: template<typename T1>
Chris@49: arma_inline
Chris@49: const eOp<T1, eop_trunc_log>
Chris@49: trunc_log(const Base<typename T1::elem_type,T1>& A)
Chris@49:   {
Chris@49:   arma_extra_debug_sigprint();
Chris@49:   
Chris@49:   return eOp<T1, eop_trunc_log>(A.get_ref());
Chris@49:   }
Chris@49: 
Chris@49: 
Chris@49: 
Chris@49: template<typename T1>
Chris@49: arma_inline
Chris@49: const eOpCube<T1, eop_trunc_log>
Chris@49: trunc_log(const BaseCube<typename T1::elem_type,T1>& A)
Chris@49:   {
Chris@49:   arma_extra_debug_sigprint();
Chris@49:   
Chris@49:   return eOpCube<T1, eop_trunc_log>(A.get_ref());
Chris@49:   }
Chris@49: 
Chris@49: 
Chris@49: 
Chris@49: //! @}