如何在 C/C++ 中执行无符号右移（Java 中的>>>）？
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How do I perform an unsigned right shift (>>> in Java) in C/C++?
提问by changed
How do I perform an unsigned right shift (>>> in Java) in C/C++?
如何在 C/C++ 中执行无符号右移（Java 中的>>>）？
采纳答案by John Knoeller
>>>is unsigned right shift, so I would think that in C this would be the same as
>>>是无符号右移，所以我认为在 C 中这将与
unsigned int foo;
unsigned int bar = foo >> whatever;
回答by Stephen Canon
In C, to get an unsigned shift, you just do a shift on an unsigned type.
在 C 中，要获得无符号移位，您只需对无符号类型进行移位。
unsigned int result = (unsigned int)valueToBeShifted >> shiftAmount;
Note that there is no guarantee that >>on a signed type gives you a signed shift in C -- this is implementation defined behavior. Most common implementations produce a signed shift if the type is signed, however.
请注意，不能保证>>有符号类型会在 C 中为您提供有符号转换——这是实现定义的行为。但是，如果类型是有符号的，则最常见的实现会产生有符号移位。
