/// @file
/// @brief Task2: function definitions

#include "task2.h" // struct Matrix, matrix_mult

#include <stddef.h> // size_t
#include <stdio.h>  // printf
#include <stdlib.h> // malloc, free

/// @todo Include C standard library headers as needed

/// @note This implementation is provided as declared and specified in task2.h
struct Matrix matrix_init(size_t m, size_t n, const double* data) {
  struct Matrix res = {.data = malloc(sizeof(double) * m * n), .m = m, .n = n};
  double* A = res.data;
  for (size_t i = 0; i != m * n; ++i)
    A[i] = data[i];
  return res;
}

/// @note This implementation is provided as declared and specified in task2.h
void matrix_print(const struct Matrix* mat) {
  size_t M = mat->m;
  size_t N = mat->n;
  const double* A = mat->data;

  for (size_t m = 0; m != M; ++m) {
    for (size_t n = 0; n != N; ++n)
      printf("%lf ", A[n + N * m]);
    printf("\n");
  }
  printf("\n");
}

/// @note This implementation is provided as declared and specified in task2.h
void matrix_clear(struct Matrix* mat) {
  free(mat->data);
  mat->m = 0;
  mat->n = 0;
}

/// @todo Implement function 'matrix_zeros' as declared and specified in task2.h
struct Matrix matrix_zeros(size_t m, size_t n) { return (struct Matrix){.data = NULL, .m = 0, .n = 0}; }

/// @todo Implement function 'matrix_identity' as declared and specified in task2.h
struct Matrix matrix_identity(size_t n) { return (struct Matrix){.data = NULL, .m = 0, .n = 0}; }

/// @todo Implement function 'matrix_transpose' as declared and specified in task2.h
void matrix_transpose(struct Matrix* a) {}

/// @todo Implement function 'matrix_mult' as declared and specified in task2.h
void matrix_mult(const struct Matrix* a, const struct Matrix* b, struct Matrix* c) {}