quad_form_sym.hpp

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#ifndef STAN_MATH_REV_FUN_QUAD_FORM_SYM_HPP
#define STAN_MATH_REV_FUN_QUAD_FORM_SYM_HPP
 
#include <stan/math/rev/meta.hpp>
#include <stan/math/rev/core.hpp>
#include <stan/math/prim/err.hpp>
#include <stan/math/prim/fun/Eigen.hpp>
#include <stan/math/prim/fun/to_ref.hpp>
#include <stan/math/rev/fun/quad_form.hpp>
#include <type_traits>
 
namespace stan {
namespace math {
 
template <typename EigMat1, typename EigMat2,
          require_all_eigen_t<EigMat1, EigMat2>* = nullptr,
          require_any_vt_var<EigMat1, EigMat2>* = nullptr>
inline auto quad_form_sym(const EigMat1& A, const EigMat2& B) {
  check_multiplicable("quad_form_sym", "A", A, "B", B);
  const auto& A_ref = to_ref(A);
  check_symmetric("quad_form_sym", "A", A_ref);
  return quad_form(A_ref, B, true);
}
 
}  // namespace math
}  // namespace stan
#endif