【C】限幅语句之条件运算符写法

int16_t constrain_int16_t(int16_t amt, int16_t low, int16_t high)//限幅
{
  return ((amt)<(low)?(low):((amt) >(high)?(high):(amt)));
	/*
		if(amt<low)  amt = low;
		else         amt = amt;
		if(amt>high) amt = high;
	        else         amt = amt;
	*/
}