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Since `numeric_limits<half>::max_exponent` is a static inline constant, it cannot be directly passed by reference. This triggers a linker error in recent versions of `g++-powerpc64le`. Changing `half` to take inputs by value fixes this. Wrapping `max_exponent` with `int(...)` to make an addressable integer also fixes this and may help with other custom `Scalar` types down-the-road. Also eliminated some compile warnings for powerpc.
Eigen is a C++ template library for linear algebra: matrices, vectors, numerical solvers, and related algorithms.
For more information go to http://eigen.tuxfamily.org/.
For pull request, bug reports, and feature requests, go to https://gitlab.com/libeigen/eigen.
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