Re: [Plplot-devel] Qt driver update

[Werner S. <sm...@ia...>]

Hi Alan,
>
> These warnings are evidence of more floating-point comparison issues  
> that
> ocurred in plspal1 which I should have spotted when I fixed a  
> similar issue
> that Valery Pipin found for cmap1_default.cmap.
>
> I believe I have now solved all these plspal1 floating-point  
> comparison
> issues completely using a macro for the needed and oft-used programme
> fragment to deal with such issues (revision 10353).  Also, I have  
> made a
> much better fallback (gray scale rather than segfault) when the  
> requested
> cmap1 palette file is completely wrong. Could you try again, please,  
> to see
> if the above warnings are gone?

No, colors changed, but I still get warnings, and the colors are also  
still wrong:

*** PLPLOT WARNING ***
Unrecognized cmap1 format 0.0   1.0   1.0   1.0   1.0 0

*** PLPLOT WARNING ***
Unrecognized cmap1 format 0. 240. 0.5 1.0 1. 0

*** PLPLOT WARNING ***
Unrecognized cmap1 format 0.0   0.0   0.0   0.0   1.0 0

I attached a zip file with the output of the pdfqt driver so you can  
see, what I'm talking about.
>
> Out of curiosity, what hardware were you using when you ran into the  
> above
> warnings?  I suspect it wasn't Intel/AMD. (That hardware uses 80-bit  
> rather
> than 64-bit registers to store intermediate floating-point results.   
> That
> leads to higher than normal floating-point precision and fewer
> floating-point comparison issues.  The downside is that if you test
> exclusively on Intel/AMD, you may not notice the effects of  
> problematic code
> which is subject to floating-point comparison issues.)

No, it's an Intel Core 2 Duo. Running Mac OS X 10.5.7.

Regards,
Werner

>
> Alan
> __________________________
> Alan W. Irwin
>
> Astronomical research affiliation with Department of Physics and  
> Astronomy,
> University of Victoria (astrowww.phys.uvic.ca).
>
> Programming affiliations with the FreeEOS equation-of-state  
> implementation
> for stellar interiors (freeeos.sf.net); PLplot scientific plotting  
> software
> package (plplot.org); the libLASi project (unifont.org/lasi); the  
> Loads of
> Linux Links project (loll.sf.net); and the Linux Brochure Project
> (lbproject.sf.net).
> __________________________
>
> Linux-powered Science
> __________________________

--
Dr. Werner Smekal
Institut fuer Allgemeine Physik
Technische Universitaet Wien
Wiedner Hauptstr 8-10
A-1040 Wien
Austria

email: sm...@ia...
web: http://www.iap.tuwien.ac.at/~smekal
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