Floating Point Underflow

[Ray Nachlinger]

On Fri, 26 Sep 2008, Steve Kargl wrote:

> On Fri, Sep 26, 2008 at 10:21:27AM -0500, Ray Nachlinger wrote:
> > On Fri, 26 Sep 2008, Steve Kargl wrote:
> > 
> > > On Fri, Sep 26, 2008 at 09:43:15AM -0500, Ray Nachlinger wrote:
> > > > 
> > > > Is there a gfortran compiler option that will
> > > > prevent a fatal "Floating Point Underflow" error
> > > > message on 64bit Windows. This problem does not
> > > > occur on 32bit systems.
> > > > 
> > > 
> > > Is this a compile time or runtime problem?
> > 
> >   Only runtime. Have big program that works nicely on
> >   Solaris, 32, 64 bit Linux, 32bit OS X, and 32 bit
> >   Windows (mingw). Received this error report from
> >   a user on 64bit Windows. Traceback from place
> >   what an underflow should be expected.
> 
> Underflow should never be a fatal error.   Is the error
> message a gfortran error message or an OS error message?
> It appears that you need to contact the OS vendor.

  I agree it never should be but have had it before
  (first sparcs required -abrupt_underflow not to
  abort). This is definitely a WINDOWS message, 
  am not looking forward to contacting Microsoft.

  Thanks for your help,

  Ray