operator_plus.hpp

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#ifndef STAN_MATH_PRIM_CORE_OPERATOR_PLUS_HPP
#define STAN_MATH_PRIM_CORE_OPERATOR_PLUS_HPP
 
#include <stan/math/prim/meta.hpp>
#include <complex>
 
namespace stan {
namespace math {
 
template <typename U, require_autodiff_t<U>>
inline std::complex<U> operator+(const std::complex<U>& x) {
  return x;
}
 
}  // namespace math
}  // namespace stan
 
#endif