然后我们计算改变，这个约定就是用来规定零点的位置的。

And then we calculate changes, the convention is understood with respect to what is the zero, right.

youdao

规定的唯一约定是返回0应该表示成功而返回非零值表示失败。

The only convention prescribed is that 0 should be returned for success and a nonzero value for failure.

youdao

法律规定或者当事人约定终止的其他情形。

Any other discharging circumstance provided by law or prescribed by the parties occurred.

youdao

And then we calculate changes, the convention is understood with respect to what is the zero, right.

然后我们计算改变,这个约定就是用来规定零点的位置的。

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