| 1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859 | // Ceres Solver - A fast non-linear least squares minimizer// Copyright 2015 Google Inc. All rights reserved.// http://ceres-solver.org///// Redistribution and use in source and binary forms, with or without// modification, are permitted provided that the following conditions are met://// * Redistributions of source code must retain the above copyright notice,//   this list of conditions and the following disclaimer.// * Redistributions in binary form must reproduce the above copyright notice,//   this list of conditions and the following disclaimer in the documentation//   and/or other materials provided with the distribution.// * Neither the name of Google Inc. nor the names of its contributors may be//   used to endorse or promote products derived from this software without//   specific prior written permission.//// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE// POSSIBILITY OF SUCH DAMAGE.//// Author: sameeragarwal@google.com (Sameer Agarwal)//// Base classes for access to an linear operator.#ifndef CERES_INTERNAL_LINEAR_OPERATOR_H_#define CERES_INTERNAL_LINEAR_OPERATOR_H_#include "ceres/types.h"namespace ceres {namespace internal {// This is an abstract base class for linear operators. It supports// access to size information and left and right multiply operators.class LinearOperator { public:  virtual ~LinearOperator();  // y = y + Ax;  virtual void RightMultiply(const double* x, double* y) const = 0;  // y = y + A'x;  virtual void LeftMultiply(const double* x, double* y) const = 0;  virtual int num_rows() const = 0;  virtual int num_cols() const = 0;};}  // namespace internal}  // namespace ceres#endif  // CERES_INTERNAL_LINEAR_OPERATOR_H_
 |