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[Chareyre <bruno.chareyre@xxxxxxxxxxxxxxx>]

If the 2 results are different, I tend to suspect human mistake in Yade code before going to the wm3 vs. eigen level.
wm3 code is years old and gave correct results for some time, eigen code is new (I mean in Yade) and not heavilly tested.

-- 
r2247 broke compilation with wm3
https://bugs.launchpad.net/bugs/585141
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Status in Yet Another Dynamic Engine: New

Bug description:
Please fix that if you want to continue using wm3 or say clearly that we can drop wm3 now (I am fine with that).

pkg/dem/DataClass/InteractionGeometry/Dem3DofGeom_SphereSphere.cpp: In member function 'virtual Vector3r Dem3DofGeom_SphereSphere::scaleDisplacementT(Real)':
pkg/dem/DataClass/InteractionGeometry/Dem3DofGeom_SphereSphere.cpp:89:11: error: no match for 'operator*' in '2 * diff'
pkg/dem/DataClass/InteractionGeometry/Dem3DofGeom_SphereSphere.cpp:90:1: warning: control reaches end of non-void function


pkg/dem/DataClass/InteractionGeometry/Dem3DofGeom_WallSphere.cpp: In member function 'virtual Vector3r Dem3DofGeom_WallSphere::scaleDisplacementT(Real)':
pkg/dem/DataClass/InteractionGeometry/Dem3DofGeom_WallSphere.cpp:46:11: error: no match for 'operator*' in '2 * diff'
pkg/dem/DataClass/InteractionGeometry/Dem3DofGeom_WallSphere.cpp:47:1: warning: control reaches end of non-void function