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  /external/ceres-solver/internal/ceres/
dogleg_strategy.h 76 Matrix subspace_B() const { return subspace_B_; }
159 Matrix2d subspace_B_;
dogleg_strategy.cc 344 const Vector2d grad_minimum = subspace_B_ * minimum + subspace_g_;
419 const double detB = subspace_B_.determinant();
420 const double trB = subspace_B_.trace();
423 B_adj << subspace_B_(1, 1) , -subspace_B_(0, 1),
424 -subspace_B_(1, 0) , subspace_B_(0, 0);
447 const Matrix2d B_i = subspace_B_ + y * Matrix2d::Identity();
454 return 0.5 * x.dot(subspace_B_ * x) + subspace_g_.dot(x);
689 // subspace_B_ = U^T (J_scaled^T J_scaled)
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