if(x >> i & 1)
时间: 2023-11-09 20:24:24 浏览: 83
This code is incomplete and cannot be properly evaluated. It appears to be missing the second half of the conditional statement.
Assuming the missing part of the code is a bitwise AND operator (&) followed by a bit mask, the expression would evaluate to true if the i-th bit of x is set to 1.
For example, if x is 0b110101 and i is 2, then x >> i would be 0b10110. If the missing part of the code is & 0b1, then the expression would be true because the second bit of x (counting from the right) is a 1.
However, without knowing the complete code and the purpose of the conditional statement, it is difficult to provide a more detailed explanation.
相关问题
for i = 1:length(x) if x(i) >= 17200 && x(i) < 45200 z(i) = (4/7x(i) - 1940); elseif x(i) >= 45200 && x(i) < 65200 z(i) = 16200; elseif x(i) >= 65200 && x(i) < 93200 z(i) = (-4/7*x(i) + 10620); end end将这一段代码x(i)换成i 但功能不变
将 `x(i)` 换成 `i` 可以得到如下代码:
```
for i = 1:length(x)
if i >= 17200 && i < 45200
z(i) = (4/7*i - 1940);
elseif i >= 45200 && i < 65200
z(i) = 16200;
elseif i >= 65200 && i < 93200
z(i) = (-4/7*i + 10620);
end
end
```
这里的循环同样遍历了 `x` 中的每个元素,但是将条件判断中的 `x(i)` 改成了 `i`,即判断 `i` 的值是否符合条件。由于 `x` 中的元素与 `i` 的值之间并没有明确的关系,所以这样修改后,代码的功能并不会发生变化。
x >> i & 1 是什么意思
The ">>" operator in programming is the right shift operator. The expression "x >> i" means to shift the binary representation of the value of x i places to the right. If the value of x is positive, the shifted bits are filled with 0's on the left side. If the value of x is negative, the shifted bits are filled with 1's on the left side (this is called sign extension).
For example, if x = 10 (which in binary is 1010) and i = 2, then x >> i would be 0010 (which is 2 in decimal).
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