is_real.hpp

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#ifndef STAN_MATH_PRIM_META_IS_REAL_HPP
#define STAN_MATH_PRIM_META_IS_REAL_HPP
 
#include <stan/math/prim/meta/conjunction.hpp>
#include <stan/math/prim/meta/disjunction.hpp>
#include <stan/math/prim/meta/is_complex.hpp>
#include <stan/math/prim/meta/is_fvar.hpp>
#include <stan/math/prim/meta/is_var.hpp>
#include <stan/math/prim/meta/is_var_or_arithmetic.hpp>
#include <stan/math/prim/meta/scalar_type.hpp>
#include <stan/math/prim/meta/value_type.hpp>
#include <stan/math/prim/meta/require_helpers.hpp>
 
#include <type_traits>
 
namespace stan {
 
template <typename T>
struct is_real : bool_constant<math::disjunction<
                     math::conjunction<is_var<std::decay_t<T>>,
                                       std::is_arithmetic<value_type_t<T>>>,
                     is_fvar<std::decay_t<T>>,
                     std::is_arithmetic<std::decay_t<T>>>::value> {};
 
template <typename T>
constexpr bool is_real_v = is_real<T>::value;
 
template <typename T>
using require_real_t = require_t<is_real<std::decay_t<T>>>;
 
template <typename T>
using require_not_real_t = require_not_t<is_real<std::decay_t<T>>>;
 
template <typename... Types>
using require_all_real_t = require_all_t<is_real<std::decay_t<Types>>...>;
 
template <typename... Types>
using require_any_real_t = require_any_t<is_real<std::decay_t<Types>>...>;
 
template <typename... Types>
using require_all_not_real_t
    = require_all_not_t<is_real<std::decay_t<Types>>...>;
 
template <typename... Types>
using require_any_not_real_t
    = require_any_not_t<is_real<std::decay_t<Types>>...>;
}  // namespace stan
 
#endif