rem: l_c_m = lcm (l_c_m, width_bytes[(int) spec[i].size]);
add: l_c_m = lcm (l_c_m, width_bytes[spec[i].size]);
context: get_lcm (void){  size_t i;  int l_c_m = 1;  for (i = 0; i < n_specs; i++)    l_c_m = lcm (l_c_m, width_bytes[(int) spec[i].size]);  return l_c_m;}