[Insight-developers] Problems with vnl_math_rnd

Bill Lorensen wlorens1 at nycap.rr.com
Mon Nov 13 19:44:19 EST 2006


Luis,

I was out of town today. I'll take a look tomorrow.

Bill

At 09:05 AM 11/13/2006, Luis Ibanez wrote:

>Hi Bill,
>
>
>Now that the release has been tagged, and the repository is
>still under control, would you like to commit the fixes for
>the vnl_math_rnd problem ?
>
>
>It will be nice to solve the known issues before we allow
>new changes to go into the toolkit.
>
>
>
>    Luis
>
>
>------------------------------------------
>Lorensen, William E (GE, Research) wrote:
>>Folks,
>>Fisrt of all, this is not critical for the release.
>>I was tracing down some test failues on windows vs70 and vs71. There are
>>three related tests that are failing:
>>itkInterpolateTest, ResampleImageFilter3Test1 and
>>ResampleImageFilter9Test.
>>Vnl_math_rnd uses assember code to round floating point numbers for some
>>windows compilers. Apparently, these round up on .5 rather than rounding
>>down. I temporary replaced the vnl_math_rnd call in itkImageFunction
>>with a C version and all of the three tests passed.
>>We should look at this after the release. It only affecte nearest
>>neighborhood calculations.
>>Bill
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