| 1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162636465666768697071727374757677787980818283848586 | // Ceres Solver - A fast non-linear least squares minimizer// Copyright 2012 Google Inc. All rights reserved.// http://code.google.com/p/ceres-solver///// 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)#ifndef CERES_PUBLIC_CRS_MATRIX_H_#define CERES_PUBLIC_CRS_MATRIX_H_#include <vector>#include "ceres/internal/port.h"#include "ceres/internal/disable_warnings.h"namespace ceres {// A compressed row sparse matrix used primarily for communicating the// Jacobian matrix to the user.struct CERES_EXPORT CRSMatrix {  CRSMatrix() : num_rows(0), num_cols(0) {}  int num_rows;  int num_cols;  // A compressed row matrix stores its contents in three arrays,  // rows, cols and values.  //  // rows is a num_rows + 1 sized array that points into the cols and  // values array. For each row i:  //  // cols[rows[i]] ... cols[rows[i + 1] - 1] are the indices of the  // non-zero columns of row i.  //  // values[rows[i]] .. values[rows[i + 1] - 1] are the values of the  // corresponding entries.  //  // cols and values contain as many entries as there are non-zeros in  // the matrix.  //  // e.g, consider the 3x4 sparse matrix  //  //  [ 0 10  0  4 ]  //  [ 0  2 -3  2 ]  //  [ 1  2  0  0 ]  //  // The three arrays will be:  //  //  //            -row0-  ---row1---  -row2-  //  rows   = [ 0,      2,          5,     7]  //  cols   = [ 1,  3,  1,  2,  3,  0,  1]  //  values = [10,  4,  2, -3,  2,  1,  2]  std::vector<int> cols;  std::vector<int> rows;  std::vector<double> values;};}  // namespace ceres#include "ceres/internal/reenable_warnings.h"#endif  // CERES_PUBLIC_CRS_MATRIX_H_
 |