[RFC PATCH 00/29] arm64: Scalable Vector Extension core support

[Joseph Myers]

On Fri, 2 Dec 2016, Dave Martin wrote:

> Presumably the C language specs specify that fenv manipulations cannot
> be reordered with respect to evaluation or floating-point expressions?

Yes (in the context of #pragma STDC FENV_ACCESS ON).  And you need to 
presume that an arbitrary function call might manipulate the environment 
unless you know it doesn't.

-- 
Joseph S. Myers
joseph@codesourcery.com