[Insight-developers] RE: More on Adaptors vs Filter precision

[Lorensen, William E (CRD)]

Sure. Go ahead and change both the adaptors and the filters/

Bill

> -----Original Message-----
> From:	Luis Ibanez [SMTP:ibanez@choroid.cs.unc.edu]
> Sent:	Wednesday, April 04, 2001 12:10 PM
> To:	Lorensen, William E (CRD)
> Cc:	'insight-developers@public.kitware.com'
> Subject:	Re: More on Adaptors vs Filter precision
> 
> 
> Bill,
> 
> It seems that the (double) casts in the math unary Filters
> are really needed to avoid the SGI's warnings.
> 
> The epsilon of 1e-10 for the test is really not necesary,
> it is now set to 1e-6, so probably we can put the (double)
> casting back, and have them working on all the platforms.
> 
> Should I make this modifications ?
> 
> 
> Luis
> 
> 
> --------------------
> 
> On Wed, 4 Apr 2001, Lorensen, William E (CRD) wrote:
> 
> > Luis,
> > I believe that I am the culprit on the adaptor/filter precision problems. A couple of weeks ago,
> I
> > added an explict cast to double on all the image filters that used arthmetic. I thought this was
> an
> > sgi'ism. Turns out it was an sgi loader problem that requires -lm after each --lVXLNumerics.
> >
> > I will remove the cast to double (since I broke them). This will fix, I believe, the precision
> > "problem".
> >
> > Bill
> >
> >