提供基本的ttl测试用例
選択できるのは25トピックまでです。 トピックは、先頭が英数字で、英数字とダッシュ('-')を使用した35文字以内のものにしてください。

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This directory contains interfaces and implementations that isolate the rest of the package from platform details.

Code in the rest of the package includes "port.h" from this directory. "port.h" in turn includes a platform specific "port_.h" file that provides the platform specific implementation.

See port_stdcxx.h for an example of what must be provided in a platform specific header file.