Function aligned_malloc

include/Eigen/src/Core/util/Memory.h:199–221

\internal Allocates \a size bytes. The returned pointer is guaranteed to have 16 or 32 bytes alignment depending on * the requirements. On allocation error, the returned pointer is null, and std::bad_alloc is thrown. */

 * the requirements. On allocation error, the returned pointer is null, and std::bad_alloc is thrown.
 */
EIGEN_DEVICE_FUNC inline void* aligned_malloc(std::size_t size) {
  if (size == 0) return nullptr;

  void* result;
#if (EIGEN_DEFAULT_ALIGN_BYTES == 0) || EIGEN_MALLOC_ALREADY_ALIGNED

  check_that_malloc_is_allowed();
  EIGEN_USING_STD(malloc)
  result = malloc(size);

#if EIGEN_DEFAULT_ALIGN_BYTES == 16
  eigen_assert((size < 16 || (std::size_t(result) % 16) == 0) &&
               "System's malloc returned an unaligned pointer. Compile with EIGEN_MALLOC_ALREADY_ALIGNED=0 to fallback "
               "to handmade aligned memory allocator.");
#endif
#else
  result = handmade_aligned_malloc(size);
#endif

  if (!result && size) throw_std_bad_alloc();

  return result;
}

/** \internal Frees memory allocated with aligned_malloc. */
EIGEN_DEVICE_FUNC inline void aligned_free(void* ptr) {