[petsc-dev] Preserving floating point exception flags

[Jed Brown]

On Mon, 3 May 2010 14:18:29 -0700, Barry Smith <bsmith at mcs.anl.gov> wrote:
> 
> On May 3, 2010, at 12:18 PM, Jed Brown wrote:
> 
> > I
> >
> > In lieu of that, you can always pass -fp_trap and run in a  
> > debugger.  It
> > will break when the exception occurs and you can check the flags with
> > fetestexcept(FE_ALL_EXCEPT), see fenv.h for the enum values (probably
> > /usr/include/bits/fenv.h).
> 
>     Jed, could you please add this very useful information to the  
> manual page for PetscSetFPTrap()? (is that where it should go?).

Sure.

Jed