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  1. #include <iostream>
  2. #include <array>
  3. using namespace std;
  4.  
  5. constexpr auto MAX_NUM_RETURNLETS_ALL_CHAN_ONE_SITE  = 18;
  6.  
  7. enum Chan : uint8_t
  8. {
  9.     HIGH_NEAR = 0,        ///< High gain near channel
  10.     HIGH_FAR,             ///< High gain far channel
  11.     SUPER_LOW,            ///< Super low gain channel
  12.     NUM_CHANNELS_PER_SITE ///< Total number of channels per site
  13. };
  14.  
  15. /// Lightweight index into SoA calibrated returns - used during sort/filter to minimize memory traffic
  16. struct SortedIndex
  17. {
  18.     Chan   gc;   ///< The gain channel of the returnlet
  19.     std::uint8_t idx;  ///< Index within the channel's SoA
  20.     std::uint8_t site; ///< The site of this returnlet
  21. };
  22.  
  23. /// The sort function effectively flattens the multi-channel returns into a single array of returnlets with their associated gain channel.
  24. // struct SortedReturnlet
  25. // {
  26. //     CalibratedReturn returnlet; ///< The returnlet to be sorted
  27. //     std::uint8_t     site;      ///< The site of this returnlet
  28. //     Chan       gc;        ///< The gain channel of the returnlet
  29. // };
  30.  
  31. /// Arrays for sorted indices and returnlets
  32. using SortedIndices            = std::array<SortedIndex, MAX_NUM_RETURNLETS_ALL_CHAN_ONE_SITE>;
  33.  
  34. int main() {
  35. 	// your code goes here
  36. 	SortedIndices sorted_indices; // Uninitialized
  37.     auto       sorted_idx_it      = begin(sorted_indices);
  38.     auto const end_sorted_indices = end(sorted_indices);
  39.     cout << "Array start: " << sorted_indices.data() << endl;
  40.     cout << "Iterator addr: " << &(*sorted_idx_it) << endl;
  41.     cout << "End - begin: " << end_sorted_indices - sorted_idx_it << endl;
  42.     sorted_idx_it++;
  43.     cout << "Array index 1: " << sorted_indices.data() + 1 << endl;
  44.     cout << "Iterator addr 1: " << &(*sorted_idx_it) << endl;
  45.     cout << "End - begin: " << end_sorted_indices - sorted_idx_it << endl;
  46. 	return 0;
  47. }
Success #stdin #stdout 0.01s 5288KB
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stdin
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Standard input is empty
stdout
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Array start: 0x7ffcd9f8fcd0
Iterator addr: 0x7ffcd9f8fcd0
End - begin: 18
Array index 1: 0x7ffcd9f8fcd3
Iterator addr 1: 0x7ffcd9f8fcd3
End - begin: 17
https://ideone.com/73Beik
language:
C++14 (gcc 8.3)
created:
1 day ago
visibility:
public

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