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/external/ceres-solver/internal/ceres/
H A Ddogleg_strategy.cc420 const double trB = subspace_B_.trace(); local
428 polynomial(1) = 2.0 * r2 * trB;
429 polynomial(2) = r2 * (trB * trB + 2.0 * detB) - subspace_g_.squaredNorm();
431 - r2 * detB * trB);

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