1void Chunk_copy(Chunk *src, size_t src_start, Chunk *dst, size_t dst_start, size_t n) 2{ 3 if (!Chunk_bounds_check(src, src_start, n)) return; 4 if (!Chunk_bounds_check(dst, dst_start, n)) return; 5 6 memcpy(dst->data + dst_start, src->data + src_start, n); 7} 8 9int Chunk_bounds_check(Chunk *chunk, size_t start, size_t n) 10{ 11 if (chunk == NULL) return 0; 12 13 return start <= chunk->length && n <= chunk->length - start; 14} 15