eval.hpp

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#ifndef STAN_MATH_PRIM_FUN_EVAL_HPP
#define STAN_MATH_PRIM_FUN_EVAL_HPP
 
#include <stan/math/prim/meta.hpp>
#include <stan/math/prim/fun/Eigen.hpp>
 
namespace stan {
namespace math {
 
template <typename T,
          require_same_t<std::decay_t<T>, plain_type_t<T>>* = nullptr>
inline T eval(T&& arg) {
  return std::forward<T>(arg);
}
 
template <typename T,
          require_not_same_t<std::decay_t<T>, plain_type_t<T>>* = nullptr>
inline decltype(auto) eval(const T& arg) {
  return arg.eval();
}
 
}  // namespace math
}  // namespace stan
 
#endif