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Diffstat (limited to 'extern/libmv/third_party/ceres/internal/ceres/block_jacobi_preconditioner.cc')
-rw-r--r--extern/libmv/third_party/ceres/internal/ceres/block_jacobi_preconditioner.cc106
1 files changed, 0 insertions, 106 deletions
diff --git a/extern/libmv/third_party/ceres/internal/ceres/block_jacobi_preconditioner.cc b/extern/libmv/third_party/ceres/internal/ceres/block_jacobi_preconditioner.cc
deleted file mode 100644
index 7f79a4f993d..00000000000
--- a/extern/libmv/third_party/ceres/internal/ceres/block_jacobi_preconditioner.cc
+++ /dev/null
@@ -1,106 +0,0 @@
-// 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: keir@google.com (Keir Mierle)
-
-#include "ceres/block_jacobi_preconditioner.h"
-
-#include "ceres/block_sparse_matrix.h"
-#include "ceres/block_structure.h"
-#include "ceres/block_random_access_diagonal_matrix.h"
-#include "ceres/casts.h"
-#include "ceres/integral_types.h"
-#include "ceres/internal/eigen.h"
-
-namespace ceres {
-namespace internal {
-
-BlockJacobiPreconditioner::BlockJacobiPreconditioner(
- const BlockSparseMatrix& A) {
- const CompressedRowBlockStructure* bs = A.block_structure();
- vector<int> blocks(bs->cols.size());
- for (int i = 0; i < blocks.size(); ++i) {
- blocks[i] = bs->cols[i].size;
- }
-
- m_.reset(new BlockRandomAccessDiagonalMatrix(blocks));
-}
-
-BlockJacobiPreconditioner::~BlockJacobiPreconditioner() {}
-
-bool BlockJacobiPreconditioner::UpdateImpl(const BlockSparseMatrix& A,
- const double* D) {
- const CompressedRowBlockStructure* bs = A.block_structure();
- const double* values = A.values();
- m_->SetZero();
- for (int i = 0; i < bs->rows.size(); ++i) {
- const int row_block_size = bs->rows[i].block.size;
- const vector<Cell>& cells = bs->rows[i].cells;
- for (int j = 0; j < cells.size(); ++j) {
- const int block_id = cells[j].block_id;
- const int col_block_size = bs->cols[block_id].size;
-
- int r, c, row_stride, col_stride;
- CellInfo* cell_info = m_->GetCell(block_id, block_id,
- &r, &c,
- &row_stride, &col_stride);
- MatrixRef m(cell_info->values, row_stride, col_stride);
- ConstMatrixRef b(values + cells[j].position,
- row_block_size,
- col_block_size);
- m.block(r, c, col_block_size, col_block_size) += b.transpose() * b;
- }
- }
-
- if (D != NULL) {
- // Add the diagonal.
- int position = 0;
- for (int i = 0; i < bs->cols.size(); ++i) {
- const int block_size = bs->cols[i].size;
- int r, c, row_stride, col_stride;
- CellInfo* cell_info = m_->GetCell(i, i,
- &r, &c,
- &row_stride, &col_stride);
- MatrixRef m(cell_info->values, row_stride, col_stride);
- m.block(r, c, block_size, block_size).diagonal() +=
- ConstVectorRef(D + position, block_size).array().square().matrix();
- position += block_size;
- }
- }
-
- m_->Invert();
- return true;
-}
-
-void BlockJacobiPreconditioner::RightMultiply(const double* x,
- double* y) const {
- m_->RightMultiply(x, y);
-}
-
-} // namespace internal
-} // namespace ceres