# Approximations
include("./approximations/gradient_descent.jl")
include("./approximations/SR1.jl")
include("./approximations/DFP.jl")
include("./approximations/BFGS.jl")
include("./approximations/DBFGS.jl")
include("./approximations/newton.jl")
# include("LBFGS.jl")

include("update_qn.jl")
include("find_direction.jl")
