binsparse-reference-cpp/include/binsparse/containers/matrices.hpp at fbbe4d0b25b7956ec7748cb8e481a6528e85c974 · GraphBLAS/binsparse-reference-cpp · GitHub

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#pragma once

#include <cstdlib>

namespace binsparse {

struct row_major {
  constexpr bool operator==(row_major) {
    return true;
  }
  template <typename T>
  constexpr bool operator==(T&&) {
    return false;
  }
};

struct column_major {
  constexpr bool operator==(column_major) {
    return true;
  }
  template <typename T>
  constexpr bool operator==(T&&) {
    return false;
  }
};

enum structure_t { general, symmetric, skew_symmetric, hermitian };

template <typename T, typename I>
struct csr_matrix {
  T* values;
  I* colind;
  I* row_ptr;

  I m, n, nnz;
  structure_t structure = general;
  bool is_iso = false;
};

template <typename T, typename I>
struct csc_matrix {
  T* values;
  I* rowind;
  I* col_ptr;

  I m, n, nnz;
  structure_t structure = general;
  bool is_iso = false;
};

template <typename T, typename I>
struct coo_matrix {
  T* values;
  I* rowind;
  I* colind;

  I m, n, nnz;
  structure_t structure = general;
  bool is_iso = false;
};

template <typename T, typename I = std::size_t, typename Order = row_major>
struct dense_matrix {
  T* values;

  I m, n;
  structure_t structure = general;

  using order = Order;
  bool is_iso = false;
};

} // namespace binsparse