[Denver-pm] Scientific Notation -> Dec?????

[Larry Leszczynski]

Hi Robert -

On Wed, Jul 23, 2014, at 06:00 PM, Robert L. Harris wrote:
> They are being inserted into a database but the db doesn't recognize that
> as a number.  So I have to convert it to -0.00007800825 before the
> insert.

I think you could just do:

if ($State =~ /[Ee]/) {
    $State = printf "%.12f", $State;
}

E.g.:

$ perl -e 'printf "%.12f\n", "-7.7800825E-05"'
-0.000077800825
$ perl -e 'printf "%.12f\n", "-7.7800825e-05"'
-0.000077800825


HTH,
Larry


> 
> 
> 
> On Wed, Jul 23, 2014 at 2:36 PM, Larry Leszczynski <larryl at emailplus.org>
> wrote:
> 
> > Hi Robert -
> >
> > > OK, I'm parsing through a bunch of data.  Occasionally I get something
> > > like
> > > :
> > > $State="-7.7800825e-05"
> > >
> > > Usually the "e" is capital ( I don't know why this product logs it this
> > > way
> > > ).  When the Capital E goes through the if statements below it converts
> > > fine, but the lower case does not it seems...
> > >
> > > I have put in the following sections to convert this:
> > >
> > >   $State =~ tr/e/E/;
> > >
> > >   if ( $State =~ /E/ ) {
> > >     $State2 = sprintf("%.10g", $State);
> > >     $State=$State2;
> > >   }
> > >   if ( $State =~ /e/ ) {
> > >     $State2 = sprintf("%.10g", $State);
> > >     $State=$State2;
> > >   }
> >
> > What are you trying to do with these values?  If you use them in numeric
> > context, they work fine as-is, no matter if they have a "e" or "E":
> >
> > $ perl -de 0
> >
> > Loading DB routines from perl5db.pl version 1.32
> > Editor support available.
> >
> > Enter h or `h h' for help, or `man perldebug' for more help.
> >
> > main::(-e:1):   0
> >   DB<1> print 0 + "-7.7800825e-05"
> > -7.7800825e-05
> >   DB<2> print 0 + "-7.7800825E-05"
> > -7.7800825e-05
> >
> >
> > Larry
> > _______________________________________________
> > Denver-pm mailing list
> > Denver-pm at pm.org
> > http://mail.pm.org/mailman/listinfo/denver-pm
> >
> 
> 
> 
> -- 
> :wq!
> ---------------------------------------------------------------------------
> Robert L. Harris
> 
> DISCLAIMER:
>       These are MY OPINIONS             With Dreams To Be A King,
>        ALONE.  I speak for                      First One Should Be A Man
>        no-one else.                                     - Manowar