NullC                   Null Space of a Matrix
lineSearch              A curvilinear search on the Stiefel manifold
                        (Wen and Yin 2013, Algo 1)
lineSearchBB            A curvilinear search on the Stiefel manifold
                        with BB steps (Wen and Yin 2013, Algo 2) This
                        is based on the line search algorithm described
                        in (Zhang and Hager, 2004)
optStiefel              Optimize a function on the Stiefel manifold
rW                      Simulate 'W' as Described in Wood(1994)
rbing.O2                Simulate a 2*2 Orthogonal Random Matrix
rbing.Op                Simulate a 'p*p' Orthogonal Random Matrix
rbing.matrix.gibbs      Gibbs Sampling for the Matrix-variate Bingham
                        Distribution
rbing.vector.gibbs      Gibbs Sampling for the Vector-variate Bingham
                        Distribution
rbmf.O2                 Simulate a '2*2' Orthogonal Random Matrix
rbmf.matrix.gibbs       Gibbs Sampling for the Matrix-variate
                        Bingham-von Mises-Fisher Distribution.
rbmf.vector.gibbs       Gibbs Sampling for the Vector-variate
                        Bingham-von Mises-Fisher Distribution
rmf.matrix              Simulate a Random Orthonormal Matrix
rmf.matrix.gibbs        Gibbs Sampling for the Matrix-variate von
                        Mises-Fisher Distribution
rmf.vector              Simulate a Random Normal Vector
rstiefel-package        Random Orthonormal Matrix Generation on the
                        Stiefel Manifold #' Simulation of random
                        orthonormal matrices from linear and quadratic
                        exponential family distributions on the Stiefel
                        manifold. The most general type of distribution
                        covered is the matrix-variate Bingham-von
                        Mises-Fisher distribution. Most of the
                        simulation methods are presented in Hoff(2009)
                        "Simulation of the Matrix Bingham-von
                        Mises-Fisher Distribution, With Applications to
                        Multivariate and Relational Data"
                        <doi:10.1198/jcgs.2009.07177>. The package also
                        includes functions for optimzation on the
                        Stiefel manifold based on algoirthms described
                        in Wen and Yin (2013) "A feasible method for
                        optimization with orthogonality constraints"
                        <doi:10.1007/s10107-012-0584-1>.
rustiefel               Siumlate a Uniformly Distributed Random
                        Orthonormal Matrix
ry_bing                 Helper Function for Sampling a
                        Bingham-distributed Vector
ry_bmf                  Helper Function for Sampling a Bingham-von
                        Mises-Fisher-distributed Vector
tr                      Compute the trace of a matrix
