Thread-, Signal- and Cancellation-safety documentation

[Alexandre Oliva]

On Mar 26, 2013, Ondřej Bílka <neleai@seznam.cz> wrote:

> On Tue, Mar 26, 2013 at 01:49:20AM -0300, Alexandre Oliva wrote:
>> @deftypefun int fesetround (int @var{round})
>> +@safety{@mtsafe{FIXME: unsafe ppc-nofpu-sim}@assafe{}@acsafe{}}
>> Changes the currently selected rounding mode to @var{round}.  If
>> @var{round} does not correspond to one of the supported rounding modes
>> nothing is changed.  @code{fesetround} returns zero if it changed the

> Documentation does not say if state is thread local or not. C11 says it
> should be thread local.

POSIX also states each thread has its own FP environment.

> Could we document it is always thread local or are incompatible
> implementations in the wild?

The only incompatible implementation I'm aware of is the ppc-nofpu
emulation.

-- 
Alexandre Oliva, freedom fighter    http://FSFLA.org/~lxoliva/
You must be the change you wish to see in the world. -- Gandhi
Be Free! -- http://FSFLA.org/   FSF Latin America board member
Free Software Evangelist      Red Hat Brazil Compiler Engineer