四舍五入

///四舍五入
public double transmitNum(double f)
{
   if((f-(int)f)<=0.5&&(f-(int)f>0))
      return (int)f+0.5;
   if((f-(int)f)>0.5)
      return (int)f+1.0;
   if((f-(int)f)==0)
      return f;
   return f;
}