Re: [Openexr-devel] ImathTest Failure

[Florian Kainz]

Florian Kainz wrote:
> Hi Dan,
>
> I think there is a bug in testRandomAngles33(); the acceptable
> error limit is too low.  If extractEuler(), which is called from
> testRandomAngles33(), performs all its computations in single
> precision, the assertion in line 229 of testExtractEuler.cpp fails.
> On most systems, extractEuler() appears to compute a double-precision
> arc tangent, and the assertion holds even with a very low error limit.
>
> The Imath confidence tests should succeed if you change line 217 in
> testExtractEuler.cpp to
>
>     float eps = 180.0 * 5.0 * limits<float>::epsilon();
>
> Hope this helps,
>
> Florian

Correction:

The new error limit given above is too high.
Line 217 of testExtractEuler.cpp should read:

    float eps = 8.0 * limits<float>::epsilon();