Re: [ferret_users] small numbers cause ferret error

[Ansley Manke <ansley.b.manke@xxxxxxxx>]

Hi -
I am not seeing this error, see below (n a 64-bit machine, linux RedHat 
5). The difference between versions is that the newer ones, starting 
with Ferret v6.6 are compiled with gfortran and the older one with g77. 
Hella and Martin, maybe we can take the discussion off-line - what 
operating systems are you running?

        NOAA/PMEL TMAP
        FERRET v6.4
        Linux(g77) 2.6.9-89.ELsmp - 11/30/09
        18-Apr-11 09:07

yes? list 1.e-38
             VARIABLE : constant
          1.000E-38

---
        NOAA/PMEL TMAP
        FERRET v6.64
        Linux(gfortran) 2.6.9-89.0.20.ELsmp - 09/20/10
        18-Apr-11 08:58

yes? list 1.e-38
             VARIABLE : constant
          1.000E-38

---
        NOAA/PMEL TMAP
        FERRET v6.67
        Linux(gfortran) 2.6.18-238.1.1.el5 - 02/11/11
        18-Apr-11 08:59

yes?  list 1.e-38
             VARIABLE : constant
          1.000E-38


On 4/18/2011 12:20 AM, Martin Schmidt wrote:
> Hi,
> I can reproduce the error with 6.6.7. However,
>
> list 1e-37/10
>
> gives correct output.
>
> Greetings,
> M. Schmidt
>
>
> Hella Riede wrote:
> > Dear ferreters,
> >
> > I encountered problems using my ferret scripts after moving from 
> > version 6.40 to 6.64. The very small numbers that appear in some of 
> > our model output (which is my ferret script input) cause an error in 
> > ferret. To avoid the problem, they could be set to zero defining a 
> > certain threshold. However, I preferred the previous handling without 
> > having to use any manual thresholds - what happened? Has this been 
> > fixed since version 6.64?
> >
> > Kind regards,
> > Hella
> >
> > ----------------------------------------------------------
> > problem with very small numbers
> > ----------------------------------------------------------
> >      NOAA/PMEL TMAP
> >      FERRET v6.64
> >      Linux(gfortran) 2.6.9-89.0.20.ELsmp - 09/16/10
> >      18-Apr-11 02:41
> >
> > yes? list 1E-38
> >  **ERROR: command syntax: 1E-38
> > yes? list 1E-37
> >              VARIABLE : constant
> >           1.000E-37
> > ----------------------------------------------------------
> > no problem with very small numbers
> > ----------------------------------------------------------
> >      NOAA/PMEL TMAP
> >      FERRET v6.401
> >      Linux(g77) 2.4.21-57.ELsmp - 12/09/09
> >      18-Apr-11 02:42
> >
> > yes? list 1E-38
> >              VARIABLE : constant
> >           1.000E-38
> > yes? list 1E-37
> >              VARIABLE : constant
> >           1.000E-37