Created attachment 563 [details] Patch Using ceres::Jet<> in combination with Eigen::Quaternion<> results in compilation errors, since scalars are not implicitly convertible to objects of type ceres::Jet. The patch fixes this problem.
Thanks for the patch. Applied in 3.2 and devel branches: https://bitbucket.org/eigen/eigen/commits/ec9066c59246/ https://bitbucket.org/eigen/eigen/commits/86756935a955/
*** Bug 1020 has been marked as a duplicate of this bug. ***
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