unit_vector_constrain() [12/12]

template<typename T , require_eigen_col_vector_vt< is_var, T > * = nullptr>

auto stan::math::unit_vector_constrain ( const T &  y, var &  lp  )

inline

Return the unit length vector corresponding to the free vector y.

See https://en.wikipedia.org/wiki/N-sphere#Generating_random_points

Template Parameters

EigMat

type inheriting from EigenBase that has a var scalar type.

Parameters

y	vector of K unrestricted variables

Returns

Unit length vector of dimension K

Parameters

lp	Log probability reference to increment.

Definition at line 61 of file unit_vector_constrain.hpp.