is_eigen_matrix_base.hpp

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#ifndef STAN_MATH_PRIM_META_IS_EIGEN_MATRIX_BASE_HPP
#define STAN_MATH_PRIM_META_IS_EIGEN_MATRIX_BASE_HPP
 
#include <stan/math/prim/fun/Eigen.hpp>
#include <stan/math/prim/meta/bool_constant.hpp>
#include <stan/math/prim/meta/is_base_pointer_convertible.hpp>
#include <stan/math/prim/meta/require_helpers.hpp>
#include <type_traits>
 
namespace stan {
 
template <typename T>
struct is_eigen_matrix_base
    : bool_constant<is_base_pointer_convertible<Eigen::MatrixBase, T>::value> {
};
 
template <typename T>
using require_eigen_matrix_base_t
    = require_t<is_eigen_matrix_base<std::decay_t<T>>>;
 
template <template <class...> class TypeCheck, class... Check>
using require_eigen_matrix_base_vt
    = require_t<container_type_check_base<is_eigen_matrix_base, value_type_t,
                                          TypeCheck, Check...>>;
 
template <template <class...> class TypeCheck, class... Check>
using require_all_eigen_matrix_base_vt
    = require_all_t<container_type_check_base<
        is_eigen_matrix_base, value_type_t, TypeCheck, Check>...>;
}  // namespace stan
 
#endif