函数逻辑报告

函数名称：__ffs64 - find first set bit in a 64 bit word*@word: The 64 bit word* On 64 bit arches this is a synomyn for __ffs* The result is not defined if no bits are set, so check that @word* is non-zero before calling this.

函数原型：static inline unsigned long __ffs64(u64 word)

返回类型：unsigned long

参数：