Re: [Openexr-devel] Assertion error in line 52 of testQuarSlerp.cpp

[Florian Kainz]

Hi Michael,

if you have an older version of OpenEXR installed, try deleting its
header files (probably in /usr/local/include/OpenEXR) before building
OpenEXR 1.6.0.

The slerp() function was rewritten after the release of 1.4.0 in order
to improve its accuracy.  If testQuatSlerp.cpp somehow picks up an old
version of ImathQuat.h, then the confidence test will fail.  The error
limits in the test are too tight for the original slerp().

If removing older versions of OpenEXR doesn't help, then I'd be interested
in the following:

    - Processor type
    - Stack trace at the point where the assertion fails
    - Values of q1, q2 and e in function compareQuats()
    - Values of q1, q2, m, n and all local variables in testSlerp()

Florian


Michael Hayes wrote:
> Hi guys,
>
> I am trying to compile OpenEXR 1.6.0 on FreeBSD 6.2-STABLE, with no success on 
> the testing part. I can complete the build if I take the testing out of the 
> make, but otherwise, it exits with the following error:
>
> Testing quaternion spherical linear interpolation
>   combinations of 90-degree rotations around x, y and z
> Assertion failed: (equalWithAbsError (q1.v.x, q2.v.x, e)), function 
> compareQuats, file testQuatSlerp.cpp, line 52.
> Abort trap
> FAIL: ImathTest
> ===================
> 1 of 1 tests failed
> ===================
>
> I hope someone can help me fix this, as I am rusty on my C++ and I am assuming 
> this means that somewhere the function is not coming up with a value that it 
> expects. Anyone up to the challenge?
>
> -Michael Hayes
>
>
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