code: def check_opt(opt, loop, ht, htarg, verb):
      r
      use_ne_eval = False
      if opt == 'parallel':
          if numexpr:
              use_ne_eval = numexpr.evaluate
          elif verb > 0:
              print(numexpr_msg)
      lagged_splined_fht = False
      if ht == 'fht':
          if htarg[1] != 0:
              lagged_splined_fht = True
      if ht in ['hqwe', 'hquad'] or lagged_splined_fht:
          loop_freq = True
          loop_off = False
      else:
          loop_off = loop == 'off'
          loop_freq = loop == 'freq'
      if verb > 2:
          if use_ne_eval:
              print("   Kernel Opt.     :  Use parallel")
          else:
              print("   Kernel Opt.     :  None")
          if loop_off:
              print("   Loop over       :  Offsets")
          elif loop_freq:
              print("   Loop over       :  Frequencies")
          else:
              print("   Loop over       :  None (all vectorized)")
      return use_ne_eval, loop_freq, loop_off