OpenEuphoria

RE: BUG! Erratic for loop behavior

• Posted by Chris Bensler <bensler at mail.com> Mar 23, 2002
• 472 views

If you change %f to %.10g it's accurate up to 8 decimal places.

I think that's fairly accurate, but when yer talking math, it's not 
precise.


Chris

Chris Bensler wrote:
> function magnify(atom a)
>  sequence str
>  integer f
>    str = sprintf("%f",a)
>    f = find('.',str)
>    if f then
>       a *= power(10,length(str)-f)
>    end if
>    return a
> end function
> 
> It works for up to 6 decimal places.
> 34.1234567 will not be fully magnified.
> 
> 
> Chris
> 
> 
> Dan Moyer wrote:
> > off the top of my head:
> > change the vars to sequence, check for '.', count how many to right of 
> > '.',
> > multiply by 10 to the how many for the MAX number in any var?
> > 
> > Dan
> > 
> > ----- Original Message -----
> > From: "Chris Bensler" <bensler at mail.com>
> > To: "EUforum" <EUforum at topica.com>
> > Sent: Saturday, March 23, 2002 9:02 PM
> > Subject: RE: BUG! Erratic for loop behavior
> > 
> > 
> > > for i = var1 to var 2 by var3 do
> > > end for
> > >
> > > how much should the vars be multiplied by?
> > >
> > > Chris
> > >
> > > Dan Moyer wrote:
> > > > Andy,
> > > >
> > > > Although I assume this is at least obvious, you could just do this:
> > > >
> > > > for i = 10*31.1 to 10*34.2  do
> > > >   ?i/10
> > > > end for
> > > >
> > > > Same for whatever max "level" of floating point you have, ie, if *any*
> > > > value
> > > > goes out to .001,multiply all by 1000, then divide, etc.
> > > >
> > > > Maybe there's some good reason that doesn't occur to me offhand why this
> > > > won't work?
> > > >
> > > > Dan Moyer
> > > >
> > > > ----- Original Message -----
> > > > From: "Andy Serpa" <renegade at earthling.net>
> > > > To: "EUforum" <EUforum at topica.com>
> > > > Sent: Saturday, March 23, 2002 11:19 AM
> > > > Subject: BUG! Erratic for loop behavior
> > > >
> > > >
> > > > > Hello,
> > > > >
> > > > >
> > > > > The output of this loop:
> > > > > ------------------------------
> > > > > for i = 9.4 to 10.0 by .1 do
> > > > >   ? i
> > > > > end for
> > > > > ------------------------------
> > > > > stops at 10, as expected.
> > > > >
> > > > >
> > > > > The output of this loop:
> > > > > ------------------------------
> > > > > for i = 31.1 to 34.2 by .1 do
> > > > >   ? i
> > > > > end for
> > > > > ------------------------------
> > > > > stops at 34.1 (!), NOT as expected.
> > > > >
> > > > >
> > > > > The output of this loop:
> > > > > ------------------------------
> > > > > for i = 131.1 to 134.2 by .1 do
> > > > >   ? i
> > > > > end for
> > > > > ------------------------------
> > > > > stops at 134.2, as expected.
> > > > >
> > > > >
> > > > > The output of this loop:
> > > > > ------------------------------
> > > > > for i = 60.0 to 64.5 by .1 do
> > > > >   ? i
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