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

Joseph Myers
2016-12-02T21:57:10Z

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