2011年4月19日
glibc的几个有用的处理二进制位的内置函数
摘要： — Built-in Function: int __builtin_ffs (unsigned int x)Returns one plus the index of the least significant 1-bit of x, or if x is zero, returns zero. 返回右起第一个‘1’的位置。— Built-in Function: int __builtin_clz (unsigned int x)Returns the number of leading 0-bits in x, starting at the most significant bit p 阅读全文
posted @ 2011-04-19 13:06 F.N. 阅读(21677) 评论(1) 推荐(3)