is_stan_scalar.hpp

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#ifndef STAN_MATH_PRIM_META_IS_STAN_SCALAR_HPP
#define STAN_MATH_PRIM_META_IS_STAN_SCALAR_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_stan_scalar
    : 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>>,
          is_complex<std::decay_t<T>>>::value> {};
 
template <typename T>
using require_stan_scalar_t = require_t<is_stan_scalar<std::decay_t<T>>>;
 
template <typename T>
using require_not_stan_scalar_t
    = require_not_t<is_stan_scalar<std::decay_t<T>>>;
 
template <typename... Types>
using require_all_stan_scalar_t
    = require_all_t<is_stan_scalar<std::decay_t<Types>>...>;
 
template <typename... Types>
using require_any_stan_scalar_t
    = require_any_t<is_stan_scalar<std::decay_t<Types>>...>;
 
template <typename... Types>
using require_all_not_stan_scalar_t
    = require_all_not_t<is_stan_scalar<std::decay_t<Types>>...>;
 
template <typename... Types>
using require_any_not_stan_scalar_t
    = require_any_not_t<is_stan_scalar<std::decay_t<Types>>...>;
template <typename T>
using require_not_vt_stan_scalar
    = require_not_t<is_stan_scalar<value_type_t<std::decay_t<T>>>>;
 
template <typename T>
using require_st_stan_scalar
    = require_t<is_stan_scalar<scalar_type_t<std::decay_t<T>>>>;
 
template <typename T>
using require_not_st_stan_scalar
    = require_not_t<is_stan_scalar<scalar_type_t<std::decay_t<T>>>>;
 
template <typename... Types>
using require_all_st_stan_scalar
    = require_all_t<is_stan_scalar<scalar_type_t<std::decay_t<Types>>>...>;
}  // namespace stan
 
#endif