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      1 // This file is part of Eigen, a lightweight C++ template library
      2 // for linear algebra.
      3 //
      4 // Copyright (C) 2008-2009 Gael Guennebaud <gael.guennebaud (at) inria.fr>
      5 // Copyright (C) 2006-2008 Benoit Jacob <jacob.benoit.1 (at) gmail.com>
      6 //
      7 // This Source Code Form is subject to the terms of the Mozilla
      8 // Public License v. 2.0. If a copy of the MPL was not distributed
      9 // with this file, You can obtain one at http://mozilla.org/MPL/2.0/.
     10 
     11 // This file is a base class plugin containing common coefficient wise functions.
     12 
     13 /** \returns an expression of the difference of \c *this and \a other
     14   *
     15   * \note If you want to substract a given scalar from all coefficients, see Cwise::operator-().
     16   *
     17   * \sa class CwiseBinaryOp, operator-=()
     18   */
     19 EIGEN_MAKE_CWISE_BINARY_OP(operator-,internal::scalar_difference_op)
     20 
     21 /** \returns an expression of the sum of \c *this and \a other
     22   *
     23   * \note If you want to add a given scalar to all coefficients, see Cwise::operator+().
     24   *
     25   * \sa class CwiseBinaryOp, operator+=()
     26   */
     27 EIGEN_MAKE_CWISE_BINARY_OP(operator+,internal::scalar_sum_op)
     28 
     29 /** \returns an expression of a custom coefficient-wise operator \a func of *this and \a other
     30   *
     31   * The template parameter \a CustomBinaryOp is the type of the functor
     32   * of the custom operator (see class CwiseBinaryOp for an example)
     33   *
     34   * Here is an example illustrating the use of custom functors:
     35   * \include class_CwiseBinaryOp.cpp
     36   * Output: \verbinclude class_CwiseBinaryOp.out
     37   *
     38   * \sa class CwiseBinaryOp, operator+(), operator-(), cwiseProduct()
     39   */
     40 template<typename CustomBinaryOp, typename OtherDerived>
     41 EIGEN_STRONG_INLINE const CwiseBinaryOp<CustomBinaryOp, const Derived, const OtherDerived>
     42 binaryExpr(const EIGEN_CURRENT_STORAGE_BASE_CLASS<OtherDerived> &other, const CustomBinaryOp& func = CustomBinaryOp()) const
     43 {
     44   return CwiseBinaryOp<CustomBinaryOp, const Derived, const OtherDerived>(derived(), other.derived(), func);
     45 }
     46 
     47