blob: 9ebce299faca28c841e1c8fe5d7d41700a1f7bfd [file] [log] [blame]
Austin Schuh70cc9552019-01-21 19:46:48 -08001// Ceres Solver - A fast non-linear least squares minimizer
Austin Schuh3de38b02024-06-25 18:25:10 -07002// Copyright 2023 Google Inc. All rights reserved.
Austin Schuh70cc9552019-01-21 19:46:48 -08003// http://ceres-solver.org/
4//
5// Redistribution and use in source and binary forms, with or without
6// modification, are permitted provided that the following conditions are met:
7//
8// * Redistributions of source code must retain the above copyright notice,
9// this list of conditions and the following disclaimer.
10// * Redistributions in binary form must reproduce the above copyright notice,
11// this list of conditions and the following disclaimer in the documentation
12// and/or other materials provided with the distribution.
13// * Neither the name of Google Inc. nor the names of its contributors may be
14// used to endorse or promote products derived from this software without
15// specific prior written permission.
16//
17// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
18// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
21// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
22// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
23// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
24// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
25// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
26// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
27// POSSIBILITY OF SUCH DAMAGE.
Austin Schuh70cc9552019-01-21 19:46:48 -080028
Austin Schuh3de38b02024-06-25 18:25:10 -070029#include "ceres/parallel_vector_ops.h"
Austin Schuh70cc9552019-01-21 19:46:48 -080030
Austin Schuh3de38b02024-06-25 18:25:10 -070031#include <algorithm>
32#include <tuple>
Austin Schuh70cc9552019-01-21 19:46:48 -080033
Austin Schuh3de38b02024-06-25 18:25:10 -070034#include "ceres/context_impl.h"
35#include "ceres/parallel_for.h"
Austin Schuh70cc9552019-01-21 19:46:48 -080036
Austin Schuh3de38b02024-06-25 18:25:10 -070037namespace ceres::internal {
38void ParallelSetZero(ContextImpl* context,
39 int num_threads,
40 double* values,
41 int num_values) {
42 ParallelFor(
43 context,
44 0,
45 num_values,
46 num_threads,
47 [values](std::tuple<int, int> range) {
48 auto [start, end] = range;
49 std::fill(values + start, values + end, 0.);
50 },
51 kMinBlockSizeParallelVectorOps);
Austin Schuh70cc9552019-01-21 19:46:48 -080052}
53
Austin Schuh3de38b02024-06-25 18:25:10 -070054} // namespace ceres::internal