value_type.hpp

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#ifndef STAN_MATH_PRIM_META_VALUE_TYPE_HPP
#define STAN_MATH_PRIM_META_VALUE_TYPE_HPP
 
#include <stan/math/prim/fun/Eigen.hpp>
#include <stan/math/prim/meta/require_helpers.hpp>
#include <type_traits>
#include <vector>
 
namespace stan {
 
template <typename T, typename = void>
struct value_type {
  using type = typename std::decay_t<T>;
};
 
template <typename T>
struct value_type<T, std::enable_if_t<std::is_pointer<T>::value>> {
  using type = typename value_type<std::remove_pointer<T>>::type;
};
 
template <typename T>
using value_type_t = typename value_type<T>::type;
 
}  // namespace stan
 
#endif