int64(占用了第一位)与uint64

Author: hero

tool/binary_conversion/binary.go

@@ -6,14 +6,14 @@ func main() {
 	var switchs uint64
 	fmt.Printf("%064b\n", switchs)
 	//0000000000000000000000000000000000000000000000000000000000000000
-	switchs = 1<<63 | 1<<62 | 1<<61 //赋值
+	switchs = 1<<63 | 1<<2 | 1<<3 //赋值
 	fmt.Printf("%064b\n", switchs)
 	//1110000000000000000000000000000000000000000000000000000000000000
-	switchs = 1<<63 | 0<<62 | 1<<61
+	switchs = 1<<4 | 1<<5 | 1<<6
 
 	fmt.Printf("%064b\n", switchs)
 	//1010000000000000000000000000000000000000000000000000000000000000
 
-	fmt.Println(1 << 62 & switchs) //判断第二位是不是0
+	fmt.Println(1 << 4 & switchs) //判断第二位是不是0
 	//0
 }