init_GaussianLens(D_d::RV=NaN, x_c::RV=0.0, y_c::RV=0.0, mass::RV=NaN, x_s::RV=NaN)

Initialize a Gaussian lens with the given parameters.

potential!(ψ::T, θx::T, θy::T, D_d::RV, θxc::RV, θyc::RV, mass::RV, θs::RV) where T <: RV

potential!(ψ::T, θx::T, θy::T, D_d::RV, θxc::RV, θyc::RV, mass::RV, θs::RV) where T <: ROA

deflection!(ψx::T, ψy::T, θx::T, θy::T, D_d::RV, θxc::RV, θyc::RV, mass::RV, θs::RV) where T <: RV

deflection!(ψx::T, ψy::T, θx::T, θy::T, D_d::RV, θxc::RV, θyc::RV, mass::RV, θs::RV) where T <: ROA

jacobian!(ψxx::T, ψyy::T, ψxy::T, θx::T, θy::T, D_d::RV, θxc::RV, θyc::RV, mass::RV, θs::RV) where T <: RV

jacobian!(ψxx::T, ψyy::T, ψxy::T, θx::T, θy::T, D_d::RV, θxc::RV, θyc::RV, mass::RV, θs::RV) where T <: ROA