[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

[amibroker] Re: AFL floating point number representation?



PureBytes Links

Trading Reference Links

Thanks Tomasz. I'm looking for a clever way to stuff two numbers into
the 32 bit float and then later extract the 2 numbers. 

// fraction = 23 bit integer
// exponent = 8 bit integer

The reason for doing this is to efficiently get an extra array of
numbers into the portfolio backtester without thousands of static vars
or Foreign symbols.

Is there a way to do this in AFL without writing a DLL?

--- In amibroker@xxxxxxxxxxxxxxx, "Tomasz Janeczko" <groups@xxx> wrote:
>
> Hello,
> 
> IEEE 754 Standard floating point (32 bit, single precision)
> http://en.wikipedia.org/wiki/IEEE_754-1985
> 
> Best regards,
> Tomasz Janeczko
> amibroker.com
> ----- Original Message ----- 
> From: <hydroblue@xxx>
> To: <amibroker@xxxxxxxxxxxxxxx>
> Sent: Saturday, February 07, 2009 5:13 PM
> Subject: [amibroker] AFL floating point number representation?
> 
> 
> >I need to know what range of values and what precision can be
> > represented in the AFL floating point arrays, specifically the
> > PositionSize array.
> > 
> > It would also be useful to know how many bits are available in the
> > mantissa and exponent. Any help appreciated.
> > 
> > Thanks,
> > Steve
> > 
> > 
> > 
> > ------------------------------------
> > 
> > **** IMPORTANT ****
> > This group is for the discussion between users only.
> > This is *NOT* technical support channel.
> > 
> > *********************
> > TO GET TECHNICAL SUPPORT from AmiBroker please send an e-mail
directly to 
> > SUPPORT {at} amibroker.com
> > *********************
> > 
> > For NEW RELEASE ANNOUNCEMENTS and other news always check DEVLOG:
> > http://www.amibroker.com/devlog/
> > 
> > For other support material please check also:
> > http://www.amibroker.com/support.html
> > 
> > *********************************
> > Yahoo! Groups Links
> > 
> > 
> >
>




------------------------------------

**** IMPORTANT ****
This group is for the discussion between users only.
This is *NOT* technical support channel.

*********************
TO GET TECHNICAL SUPPORT from AmiBroker please send an e-mail directly to 
SUPPORT {at} amibroker.com
*********************

For NEW RELEASE ANNOUNCEMENTS and other news always check DEVLOG:
http://www.amibroker.com/devlog/

For other support material please check also:
http://www.amibroker.com/support.html

*********************************
Yahoo! Groups Links

<*> To visit your group on the web, go to:
    http://groups.yahoo.com/group/amibroker/

<*> Your email settings:
    Individual Email | Traditional

<*> To change settings online go to:
    http://groups.yahoo.com/group/amibroker/join
    (Yahoo! ID required)

<*> To change settings via email:
    mailto:amibroker-digest@xxxxxxxxxxxxxxx 
    mailto:amibroker-fullfeatured@xxxxxxxxxxxxxxx

<*> To unsubscribe from this group, send an email to:
    amibroker-unsubscribe@xxxxxxxxxxxxxxx

<*> Your use of Yahoo! Groups is subject to:
    http://docs.yahoo.com/info/terms/