函数逻辑报告

函数名称：-constant log of base 2 calculators* - the arch may override these in asm/bitops.h if they can be implemented* more efficiently than using fls() and fls64()* - the arch is not required to handle n==0 if implementing the fallback

函数原型：static inline __attribute__((const)) int __ilog2_u32(u32 n)

返回类型：int

参数：