return_var_matrix.hpp

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#ifndef STAN_MATH_REV_META_RETURN_VAR_MATRIX
#define STAN_MATH_REV_META_RETURN_VAR_MATRIX
 
#include <stan/math/rev/meta/is_var.hpp>
#include <stan/math/prim/meta.hpp>
 
namespace stan {
 
template <typename ReturnType, typename... Types>
using return_var_matrix_t = std::conditional_t<
    is_any_var_matrix<ReturnType, Types...>::value,
    stan::math::var_value<
        stan::math::promote_scalar_t<double, plain_type_t<ReturnType>>>,
    stan::math::promote_scalar_t<stan::math::var_value<double>,
                                 plain_type_t<ReturnType>>>;
}  // namespace stan
 
#endif