Function aligned_malloc

include/Eigen/Eigen/src/Core/util/Memory.h:207–229

\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. */

  * 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)