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本帖最后由 KBTiller 于 2011-04-25 22:36 编辑
3.4.1
implementation-defined behavior
unspecified behavior where each implementation documents how the choice is made
EXAMPLE An example of implementation-defined behavior is the propagation of the high-order bit
when a signed integer is shifted right.
实现定义的行为
实现(书面)说明如何选择的未说明行为
例:实现定义的行为的一个例子是signed 整数右移时高位的填充
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在C89中,这个概念的定义是
Behavior, for a correct program construct and correct data, that depends on the characteristics of the implementation and that each implementation shall document.
这里强调了这种行为的正确性 |
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