__CLZ(__RBIT(0x80000000U))
时间: 2023-10-25 18:27:13 浏览: 60
__CLZ(__RBIT(0x80000000U))是一种用于计算32位无符号整数的前导零位数的宏定义。__RBIT宏定义将给定的32位值的位反转,并将结果返回。__CLZ宏定义计算结果中前导零的数量,并返回该数量。因此,__CLZ(__RBIT(0x80000000U))将返回1,表示给定的32位值的前导零位数为1。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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