Re: [Lcms-user] Patches for floating point curve segments

[Marti M. <mar...@li...>]

Thanks Paul,

It is still hard to find any floating point profiles to check, so your 
patches are much appreciated. Specially the test code.

Best regards
Marti


El 12/03/2013 15:27, Paul Miller escribió:
> I've been testing some floating point monitor profiles, and I think I have found a couple of bugs in the floating point sampled curve support in the latest lcms
>
> cmsBuildTabulatedCurveFloat builds a curve which always evaluates to 0 for a value of 0.  I have changed it to use a constant segment which matches the first sample  for values <= 0, and also added a similar segment matching the last sample for values > 1.0 (the ICC spec says that the first and last segments in a segmented curve should be function segments).
>
> EvalSegmentedFN gives the wrong result when evaluating a sampled segment where x1 - x0 is not 1.0
>
> I have also added tests to testcms.c to verify the changes.
>
> Suggested patches attached....
>
> (apologies if this turns out to be a duplicate: I sent it to the list request address by mistake)
>
> - Paul
>
>
>
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