[01/12] Add fesetexcept

[Joseph Myers]

On Fri, 12 Aug 2016, Paul E. Murphy wrote:

> > +  /* The test is that this does not cause exception traps.  */
> 
> This is the test description.  It would improve readability by reworking
> it into the file description at the top.

This comment is specifically intended to relate to the following line of 
code (to explain why nothing is checked about exception flags after that 
call, for example).  I don't think moving that information away from the 
potentially trapping function call would be an improvement.

-- 
Joseph S. Myers
joseph@codesourcery.com