Suppose a signal is generated during the very small time gap between setting the errno variable by the close system call and its return.
假定信号在close系统调用设置errno变量到其返回之前这一极小的时间片段内生成。
By contrast of its calculating data and the testing data, they were very close.
将其计算数据与实验数据验证对比，两者非常接近。
By contrast of its calculating data and the testing data, they were very close.
将其计算数据与实验数据验证对比，两者非常接近。
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