sdds_time.py 文件源码

def iadd(t1, offset):
     if not isinstance(t1, Time):
          return t1
     tmp=_copy.copy(t1)
     # make into  tics
     pfrac,pwhole = math.modf(offset*Time.TicFreq)
     tfrac = long(tmp.pf250_) + int(pfrac * Time.Two32)
     tmp.ps250_ += long(pwhole) + (tfrac>>32)
     tmp.pf250_ = int(tfrac)
     return tmp