math/prim_2fun_2symmetrize__from__upper__tri_8hpp_source.html

#ifndef STAN_MATH_PRIM_FUN_SYMMETRIZE_FROM_UPPER_TRI_HPP

#define STAN_MATH_PRIM_FUN_SYMMETRIZE_FROM_UPPER_TRI_HPP


#include <stan/math/prim/err.hpp>

#include <stan/math/prim/fun/Eigen.hpp>


namespace stan {

namespace math {


template <typename T, require_eigen_t<T>* = nullptr>

inline Eigen::Matrix<value_type_t<T>, Eigen::Dynamic, Eigen::Dynamic>

symmetrize_from_upper_tri(const T& m) {

  check_square("symmetrize_from_upper_tri", "m", m);

  return m.template selfadjointView<Eigen::Upper>();

}


}  // namespace math

}  // namespace stan


#endif

Eigen.hpp

stan::math::check_square
void check_square(const char *function, const char *name, const T_y &y)
Check if the specified matrix is square.
Definition check_square.hpp:23

stan::math::symmetrize_from_upper_tri
auto symmetrize_from_upper_tri(T_x &&x)
Return a symmetric matrix using elements from the lower triangular part of the input matrix.
Definition symmetrize_from_upper_tri.hpp:21

stan
The lgamma implementation in stan-math is based on either the reentrant safe lgamma_r implementation ...
Definition unit_vector_constrain.hpp:15

err.hpp