Boost C++ Libraries

...one of the most highly regarded and expertly designed C++ library projects in the world. — Herb Sutter and Andrei Alexandrescu, C++ Coding Standards

Header <boost/algorithm/cxx17/exclusive_scan.hpp>

???

Marshall Clow

namespace boost {
  namespace algorithm {
    template<typename InputIterator, typename OutputIterator, typename T, 
             typename BinaryOperation> 
      OutputIterator 
      exclusive_scan(InputIterator first, InputIterator last, 
                     OutputIterator result, T init, BinaryOperation bOp);
    template<typename InputIterator, typename OutputIterator, typename T> 
      OutputIterator 
      exclusive_scan(InputIterator first, InputIterator last, 
                     OutputIterator result, T init);
  }
}