Re: [boost] [endian] Testing floating point interoperability

Subject: Re: [boost] [endian] Testing floating point interoperability
From: Rob Stewart (rob.stewart_at_[hidden])
Date: 2015-03-20 16:47:19

On March 20, 2015 9:40:22 AM EDT, Beman Dawes <bdawes_at_[hidden]> wrote:
> 
> But for Microsoft in debug mode, certain bit patterns do not
> round-trip correctly. For example, 7f810000 becomes 7fc10000. (Those
> are little endian representations).
> 
> So what should Boost.Endian do? There is less than two weeks left
> before 1.58.0 ships, and even if this turns out to be a bug in the
> Microsoft compiler, it is likely to cause user problems.
> 
> The most conservative approach is to remove the return-by-value
> reverse functions, and note in the docs that only in-place reverse is
> available for FP. That will give us more time to determine if
> return-by-value endianness reverse is valid for floating point.

Until you have a good handle on the issue, you should not release the functionality as stable and vetted. You might just use a macro to enable those functions as experimental.

___
Rob

(Sent from my portable computation engine)