Mercurial > hg > segmenter-vamp-plugin
annotate armadillo-2.4.4/include/armadillo_bits/fn_trunc_exp.hpp @ 0:8b6102e2a9b0
Armadillo Library
| author | maxzanoni76 <max.zanoni@eecs.qmul.ac.uk> |
|---|---|
| date | Wed, 11 Apr 2012 09:27:06 +0100 |
| parents | |
| children |
| rev | line source |
|---|---|
| max@0 | 1 // Copyright (C) 2008-2010 NICTA (www.nicta.com.au) |
| max@0 | 2 // Copyright (C) 2008-2010 Conrad Sanderson |
| max@0 | 3 // |
| max@0 | 4 // This file is part of the Armadillo C++ library. |
| max@0 | 5 // It is provided without any warranty of fitness |
| max@0 | 6 // for any purpose. You can redistribute this file |
| max@0 | 7 // and/or modify it under the terms of the GNU |
| max@0 | 8 // Lesser General Public License (LGPL) as published |
| max@0 | 9 // by the Free Software Foundation, either version 3 |
| max@0 | 10 // of the License or (at your option) any later version. |
| max@0 | 11 // (see http://www.opensource.org/licenses for more info) |
| max@0 | 12 |
| max@0 | 13 |
| max@0 | 14 |
| max@0 | 15 //! \addtogroup fn_trunc_exp |
| max@0 | 16 //! @{ |
| max@0 | 17 |
| max@0 | 18 |
| max@0 | 19 |
| max@0 | 20 template<typename eT> |
| max@0 | 21 inline |
| max@0 | 22 static |
| max@0 | 23 typename arma_float_only<eT>::result |
| max@0 | 24 trunc_exp(const eT x) |
| max@0 | 25 { |
| max@0 | 26 if(std::numeric_limits<eT>::is_iec559 && (x >= Math<eT>::log_max() )) |
| max@0 | 27 { |
| max@0 | 28 return std::numeric_limits<eT>::max(); |
| max@0 | 29 } |
| max@0 | 30 else |
| max@0 | 31 { |
| max@0 | 32 return std::exp(x); |
| max@0 | 33 } |
| max@0 | 34 } |
| max@0 | 35 |
| max@0 | 36 |
| max@0 | 37 |
| max@0 | 38 template<typename eT> |
| max@0 | 39 inline |
| max@0 | 40 static |
| max@0 | 41 typename arma_integral_only<eT>::result |
| max@0 | 42 trunc_exp(const eT x) |
| max@0 | 43 { |
| max@0 | 44 return eT( trunc_exp( double(x) ) ); |
| max@0 | 45 } |
| max@0 | 46 |
| max@0 | 47 |
| max@0 | 48 |
| max@0 | 49 template<typename T> |
| max@0 | 50 arma_inline |
| max@0 | 51 static |
| max@0 | 52 std::complex<T> |
| max@0 | 53 trunc_exp(const std::complex<T>& x) |
| max@0 | 54 { |
| max@0 | 55 return std::exp(x); |
| max@0 | 56 } |
| max@0 | 57 |
| max@0 | 58 |
| max@0 | 59 |
| max@0 | 60 template<typename T1> |
| max@0 | 61 arma_inline |
| max@0 | 62 const eOp<T1, eop_trunc_exp> |
| max@0 | 63 trunc_exp(const Base<typename T1::elem_type,T1>& A) |
| max@0 | 64 { |
| max@0 | 65 arma_extra_debug_sigprint(); |
| max@0 | 66 |
| max@0 | 67 return eOp<T1, eop_trunc_exp>(A.get_ref()); |
| max@0 | 68 } |
| max@0 | 69 |
| max@0 | 70 |
| max@0 | 71 |
| max@0 | 72 template<typename T1> |
| max@0 | 73 arma_inline |
| max@0 | 74 const eOpCube<T1, eop_trunc_exp> |
| max@0 | 75 trunc_exp(const BaseCube<typename T1::elem_type,T1>& A) |
| max@0 | 76 { |
| max@0 | 77 arma_extra_debug_sigprint(); |
| max@0 | 78 |
| max@0 | 79 return eOpCube<T1, eop_trunc_exp>(A.get_ref()); |
| max@0 | 80 } |
| max@0 | 81 |
| max@0 | 82 |
| max@0 | 83 |
| max@0 | 84 //! @} |