acdemiralp / multi

Standard-like multidimensional arrays and vectors built on top of mdspan.

MULTI

Standard-like multidimensional arrays and vectors built on top of mdspan.

Array Example

#include <multi/array.hpp>

int main(int argc, char** argv)
{
  multi::array<float, multi::dimensions<4, 4, 4>> multi_array;
  
  // Access.
  for (std::size_t x = 0; x < multi_array.dimensions()[0]; ++x)
    for (std::size_t y = 0; y < multi_array.dimensions()[1]; ++y)
      for (std::size_t z = 0; z < multi_array.dimensions()[2]; ++z)
        multi_array(x, y, z) = static_cast<float>(x + y + z);

  // Linear access.
  for (std::size_t i = 0; i < multi_array.size(); ++i)
    multi_array[i] = static_cast<float>(i);

  // Linear iteration.
  std::for_each(multi_array.begin(), multi_array.end(), [ ] (auto& value) { value += 42.0f; });
}

Vector Example

#include <multi/vector.hpp>

int main(int argc, char** argv)
{
  multi::vector<float, 3> multi_vector({4, 4, 4}, 0.0f);

  // Resize.
  multi_vector.resize({8, 8, 8});
  
  // Access.
  for (std::size_t x = 0; x < multi_vector.dimensions()[0]; ++x)
    for (std::size_t y = 0; y < multi_vector.dimensions()[1]; ++y)
      for (std::size_t z = 0; z < multi_vector.dimensions()[2]; ++z)
        multi_vector(x, y, z) = static_cast<float>(x + y + z);

  // Linear access.
  for (std::size_t i = 0; i < multi_vector.size(); ++i)
    multi_vector[i] = static_cast<float>(i);

  // Linear iteration.
  std::for_each(multi_vector.begin(), multi_vector.end(), [ ] (auto& value) { value += 42.0f; });
}

Notes

See the tests for further usage examples.