dot_product.hpp

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#ifndef STAN_MATH_OPENCL_PRIM_DOT_PRODUCT_HPP
#define STAN_MATH_OPENCL_PRIM_DOT_PRODUCT_HPP
#ifdef STAN_OPENCL
#include <stan/math/opencl/kernel_generator.hpp>
#include <stan/math/opencl/prim/sum.hpp>
#include <stan/math/prim/meta.hpp>
#include <stan/math/prim/err/check_vector.hpp>
#include <stan/math/prim/err/check_matching_sizes.hpp>
 
namespace stan {
namespace math {
 
template <typename T_a, typename T_b,
          require_all_kernel_expressions_and_none_scalar_t<T_a, T_b>* = nullptr>
inline auto dot_product(const T_a& a, const T_b& b) {
  const char* function = "dot_product(OpenCL)";
  check_vector(function, "a", a);
  check_vector(function, "b", b);
  return sum(elt_multiply(a, b));
}
 
}  // namespace math
}  // namespace stan
 
#endif
#endif