b_mat                   Construct B matrix
b_mat_mult              Multiply by B matrix
d_mat                   Construct D matrix
d_mat_mult              Multiply by D matrix
discrete_deriv          Discrete differentiation
discrete_integ          Discrete integration
divided_diff            Divided differencing
dot_functions           In-place computations
dspline_interp          Discrete spline interpolation
dspline_solve           Discrete spline projection
h_eval                  Evaluate H basis
h_mat                   Construct H matrix
h_mat_mult              Multiply by H matrix
n_eval                  Evaluate N basis
n_mat                   Construct N matrix
