Revert C++17 usage of std::exclusive_scan

* Unfortunately on some systems such as the Nvidia Jetson, while the
  compiler supports C++17, the STL implementations are incomplete.
  One such missing implementation is std::exclusive_scan, so this
  patch reverts to the old way of manually computing prefix sums.

Change-Id: I4192257519b0083560a4b44e2659ee44d7421105
1 file changed
tree: 27bda68e6e0ec38dfd5e1f54681c3c86a377c506
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  2. bazel/
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  10. scripts/
  11. .clang-format
  12. .gitignore
  13. BUILD
  14. CITATION.cff
  15. CMakeLists.txt
  16. CONTRIBUTING.md
  17. LICENSE
  18. package.xml
  19. README.md
  20. WORKSPACE
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