UNIX时间戳提振::了posix_time ::分组时间 [英] unix timestamp to boost::posix_time::ptime

问题描述

我需要从epoch到分组时间双转换与秒数。我是preTY肯定必须有一个简单的方法来做到这一点，但我无法找到任何东西。谢谢你。

I need to convert double with number of seconds since the epoch to ptime. I'm prety sure there must be an easy way to do this, but I couldn't find anything. Thanks.

编辑：原时间戳是浮点。我不能改变它，我不想失去亚秒precision。

The original timestamp is floating point. I can't change it and i don't want to lose the sub-second precision.

推荐答案

一些摆弄周围后，我想出了这一点：

after some fiddling around i came up with this:

ptime(date(1970, 1, 1), time_duration(0, 0, 0, time_duration::ticks_per_second() * 1234567890.0987654321))

我不知道这是最好的解决办法，但似乎做我所需要的。

I'm not sure this is the best solution, but it seems to do what i need.

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