rows_dot_product.hpp

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#ifndef STAN_MATH_OPENCL_REV_ROWS_DOT_PRODUCT_HPP
#define STAN_MATH_OPENCL_REV_ROWS_DOT_PRODUCT_HPP
#ifdef STAN_OPENCL
 
#include <stan/math/opencl/rev/adjoint_results.hpp>
#include <stan/math/opencl/kernel_generator.hpp>
#include <stan/math/opencl/prim/rows_dot_product.hpp>
#include <stan/math/rev/core.hpp>
#include <stan/math/rev/fun/value_of.hpp>
#include <stan/math/prim/fun/size_zero.hpp>
 
namespace stan {
namespace math {
 
template <
    typename T1, typename T2, require_any_var_t<T1, T2>* = nullptr,
    require_all_nonscalar_prim_or_rev_kernel_expression_t<T1, T2>* = nullptr>
inline var_value<matrix_cl<double>> rows_dot_product(T1&& v1, T2&& v2) {
  check_matching_sizes("rows_dot_product(OpenCL)", "v1", v1, "v2", v2);
 
  arena_t<T1> v1_arena = std::forward<T1>(v1);
  arena_t<T2> v2_arena = std::forward<T2>(v2);
 
  return make_callback_var(
      rows_dot_product(value_of(v1), value_of(v2)),
      [v1_arena, v2_arena](const vari_value<matrix_cl<double>>& res) mutable {
        adjoint_results(v1_arena, v2_arena) += expressions(
            elt_multiply(rowwise_broadcast(res.adj()), value_of(v2_arena)),
            elt_multiply(rowwise_broadcast(res.adj()), value_of(v1_arena)));
      });
}
 
}  // namespace math
}  // namespace stan
 
#endif
#endif