Saving and restoring the value of errno in the signal handler, as follows, can resolve the problem
如下,在信号处理器内保存和恢复 errno 的值,可以解决这一问题
In a signal-processing application, all the speed advantages offered by banded matrices would be lost if restoring the signal required multiplying it by a full matrix.
在信号处理应用程序中,如果恢复信号需要乘上一个“满”的矩阵,那么带状矩阵提供的所有的速度优势都将不复存在。
Signal unit initial alignment - invokes initial alignment prior to activating or restoring a signaling link.
信令单元初始定位——在激活或恢复信令链路之前调用初始定位。
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