Re: [testsuite gfortran] partial fix for secnds*.f

[Tim Prince <n8tm at aol dot com>]

pinskia@gmail.com wrote:
> On 5/28/07, Dominique Dhumieres <dominiq@lps.ens.fr> wrote:
> > So if I am not mistaken, -ffast-math does not obey the parentheses.
> > If you consider this is a bug, I'll fill a bug report.
>
> -ffast-math enables -funsafe-math-optimizations which tells the
> compiler to ignore those rules (and reassiocate all it can).  So no
> this is not a bug.  This is by design.
>
> -- Pinski
In that case, it is all the more important to document how to get 
individual more or less aggressive optimizations which are part of 
-ffast-math, including, but not limited to, optimization of divide by an 
invariant, and abrupt underflow.  No wonder we've seen the comment 
-fbroken-math.
Thanks.