Re: Float Precision in ASE Files

["Yohanes Yogi Wahyu P" <ironwill@bdg.centrin.net.id>]

----- Original Message ----- 
From: christian audebert <christian.audebert@wanadoo.fr>
Subject: Re: Float Precision in ASE Files

> no, absolutely nothing problem.it work perfectly.
>  if you need, you can change number of digit after decimal in ase exporter.
> eomer

Someone else told me that you can't trust the lower precision digits
(i.e. the exporter gives you garbage). See below.


Yohanes Yogi Wahyu P.
ironwill@bdg.centrin.net.id (home)
yogi@students.if.itb.ac.id (school)



----- Original Message ----- 
From: Blake Senftner <bsenftner@rotor.net>
To: 'Algorithms List' <algorithms@3dgamedev.com>
Sent: Friday, April 28, 2000 12:22 AM
Subject: Re: [algorithms] Float Precision in ASE Files

> Gee... you've uncovered problem #1001 with the ASE exporter. ;)
> 
> Notice on the export popup it allows the user to specify how
> much precision they would like? Well, that is bogus too. It will
> cause garbage in the lower precision digits.
> 
> Take the ASE exporter source, open file export.cpp and modify
> the routine that exports floating point values like this:
> 
> TSTR AsciiExp::Format(float value)
> {
>    TCHAR buf[40];
> 
>    // mofified for scientific notation output:
>    // sprintf(buf, szFmtStr, value);
>    // CommaScan(buf);
>    sprintf(buf, "%g", value);
> 
>    return TSTR(buf);
> }
> 
> Any standard routine, like atof(), will still understand
> the scientific notation and you'll get the necessary precision
> for whatever value is being written.
> 
> -Blake
> 


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