[Insight-developers] level set/vnl problems on SGI: update

[Bill Lorensen]

There are dependency problems with the Examples. The examples driver programs include .cxx files that do not start with the prefix itk. I'll add an INCLUDE_REGULAR_EXPRESSION to each of the CMakeLists.txt files in Examples. However, this does not seem to help Visual Studio 6. I think a forced update on the test driver programs is the only way to get a rebuild.

Bill


At 01:02 PM 4/15/03 -0700, Lydia Ng wrote:
>I believe the level set problems on SGI are now fixed.
>
>It is related to "char/signed char" issue and the fixes made to
>itkNumericsTraits.h on Mar 18th.
>
>The SparseFieldLevelSetImageFilter uses a "char" image to store status
>information. I've make it explicitly "signed char" and the tests + the
>regression tests are now passing on the uiowa SGI machines.
>
>The test now passes on the GE SGI's. However, the regression tests seem
>to be still failing. Perhaps they regression tests are not rebuilding
>properly?
>
>- Lydia
> 
>
>> -----Original Message-----
>> From: Bill Hoffman [mailto:bill.hoffman@kitware.com]
>> Sent: Tuesday, April 08, 2003 7:17 AM
>> To: Miller, James V (Research); Lydia Ng; insight-
>> developers@public.kitware.com
>> Subject: RE: [Insight-developers] level set/vnl problems on SGI?
>> 
>> It looks like they are doing the right thing:
>> 
>> vcl/sgi/vcl_cmath.h
>> inline float       vcl_sqrt(float  x) { return ::sqrtf(x); }
>> inline double      vcl_sqrt(double x) { return ::sqrt(x); }
>> inline long double vcl_sqrt(long double x) { return ::sqrtl(x); }
>> 
>> inline float       vcl_abs (float       x) { return ::fabsf(x); }
>> inline double      vcl_abs (double      x) { return ::fabs(x); }
>> inline long double vcl_abs (long double x) { return ::fabsl(x); }
>> 
>> However, perhaps this is the problem.   Perhaps the code is
>> depending on a promotion to double for some of the operations,
>> and the SGI is using float versions.   sqrt and abs are the only
>> ones with the problem.
>> 
>> 
>> 
>> -Bill
>> 
>> 
>> At 10:03 AM 4/8/2003, Miller, James V (Research) wrote:
>> >I believe the SGI provides overloaded versions of
>> >abs and sqrt for various data types.
>> >
>> >I would guess that these vnl functions are not being
>> >properly defined on the SGI.
>> >
>> >Jim
>> >
>> >
>> >> -----Original Message-----
>> >> From: Bill Hoffman [mailto:bill.hoffman@kitware.com]
>> >> Sent: Monday, April 07, 2003 3:09 PM
>> >> To: Lydia Ng; insight-developers@public.kitware.com
>> >> Subject: Re: [Insight-developers] level set/vnl problems on SGI?
>> >>
>> >>
>> >> There are no known issues with these functions, and
>> >> they are being used in other places that seem to work.
>> >> However, it sounds like you are close to finding the problem.
>> >> I would suggest adding some more prints, so we can find
>> >> out exactly where things start to differ, and which of the
>> >> functions is causing the trouble.
>> >>
>> >> -Bill
>> >>
>> >>
>> >>
>> >>
>> >> >I think March 17th was around the time the VNL stuff was
>> >> being changed
>> >> >over.
>> >> >The LevelSetFunction uses the following vnl/vcl functions:
>> >> >
>> >> > vnl_math_abs
>> >> > vnl_math_min
>> >> > vnl_math_max
>> >> > vcl_sqrt
>> >> >
>> >> >
>> >> >Are there any known issues with any of these functions on SGI?
>> >> >
>> >> >
>> >> >- Lydia
>> >> >
>> >>
>> >>
>> >>
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>> 
>
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