摘要: int ffs(int x){ int r = 1; if (!x) return 0; if (!(x & 0xffff)) { x >>= 16; r += 16; } if (!(x & 0xff)) { x >>= 8; r += 8; } if (!(x & 0xf)) { x >>= 4; r += 4; } if (!(x & 3)) { x >>= 2; r += 2; } if (!(x... 阅读全文
posted @ 2011-09-23 14:51 TIANCJ 阅读(298) 评论(0) 推荐(0) 编辑