00001 // This file is part of Eigen, a lightweight C++ template library 00002 // for linear algebra. 00003 // 00004 // Copyright (C) 2008 Gael Guennebaud <gael.guennebaud@inria.fr> 00005 // 00006 // Eigen is free software; you can redistribute it and/or 00007 // modify it under the terms of the GNU Lesser General Public 00008 // License as published by the Free Software Foundation; either 00009 // version 3 of the License, or (at your option) any later version. 00010 // 00011 // Alternatively, you can redistribute it and/or 00012 // modify it under the terms of the GNU General Public License as 00013 // published by the Free Software Foundation; either version 2 of 00014 // the License, or (at your option) any later version. 00015 // 00016 // Eigen is distributed in the hope that it will be useful, but WITHOUT ANY 00017 // WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS 00018 // FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License or the 00019 // GNU General Public License for more details. 00020 // 00021 // You should have received a copy of the GNU Lesser General Public 00022 // License and a copy of the GNU General Public License along with 00023 // Eigen. If not, see <http://www.gnu.org/licenses/>. 00024 00025 #ifndef EIGEN_SPARSE_FUZZY_H 00026 #define EIGEN_SPARSE_FUZZY_H 00027 00028 // template<typename Derived> 00029 // template<typename OtherDerived> 00030 // bool SparseMatrixBase<Derived>::isApprox( 00031 // const OtherDerived& other, 00032 // typename NumTraits<Scalar>::Real prec 00033 // ) const 00034 // { 00035 // const typename internal::nested<Derived,2>::type nested(derived()); 00036 // const typename internal::nested<OtherDerived,2>::type otherNested(other.derived()); 00037 // return (nested - otherNested).cwise().abs2().sum() 00038 // <= prec * prec * std::min(nested.cwise().abs2().sum(), otherNested.cwise().abs2().sum()); 00039 // } 00040 00041 #endif // EIGEN_SPARSE_FUZZY_H