1#ifndef STAN_MATH_PRIM_FUN_TRACE_HPP
2#define STAN_MATH_PRIM_FUN_TRACE_HPP
20template <
typename T, require_eigen_t<T>* =
nullptr,
21 require_not_st_var<T>* =
nullptr>
23 return make_holder([](
auto&& m_) {
return m_.trace(); }, std::forward<T>(m));
value_type_t< T > trace(const T &m)
Calculates trace (sum of diagonal) of given kernel generator expression.
auto make_holder(F &&func, Args &&... args)
Calls given function with given arguments.
The lgamma implementation in stan-math is based on either the reentrant safe lgamma_r implementation ...