diff.h

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// ========================================================================= //
// This file is part of MyraMath, copyright (c) 2014-2019 by Ryan A Chilton  //
// and distributed by MyraCore, LLC. See LICENSE.txt for license terms.      //
// ========================================================================= //

#ifndef MYRAMATH_UTILITY_DIFF_H
#define MYRAMATH_UTILITY_DIFF_H

#include <vector>
#include <myramath/utility/detail/ssize.h>

namespace myra {

template<class T> std::vector<T> diff(const std::vector<T>& v)
  {
  int I = ssize(v)-1;
  std::vector<T> answer(I);
  for (int i = 0; i < I; ++i)
    answer[i] = v[i+1]-v[i];
  return answer;
  }

} // namespace myra

#endif