Vehicle-cpp/zjw/ceres-solver-master/internal/ceres/parallel_vector_ops.cc

// Ceres Solver - A fast non-linear least squares minimizer
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// http://ceres-solver.org/
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#include "ceres/parallel_vector_ops.h"

#include <algorithm>
#include <tuple>

#include "ceres/context_impl.h"
#include "ceres/parallel_for.h"

namespace ceres::internal {
void ParallelSetZero(ContextImpl* context,
                     int num_threads,
                     double* values,
                     int num_values) {
  ParallelFor(
      context,
      0,
      num_values,
      num_threads,
      [values](std::tuple<int, int> range) {
        auto [start, end] = range;
        std::fill(values + start, values + end, 0.);
      },
      kMinBlockSizeParallelVectorOps);
}

}  // namespace ceres::internal