offset_multiplier_constrain.hpp

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#ifndef STAN_MATH_OPENCL_PRIM_CONSTRAINT_OFFSET_MULTIPLIER_CONSTRAIN_HPP
#define STAN_MATH_OPENCL_PRIM_CONSTRAINT_OFFSET_MULTIPLIER_CONSTRAIN_HPP
#ifdef STAN_OPENCL
 
#include <stan/math/opencl/prim/sum.hpp>
#include <stan/math/opencl/matrix_cl.hpp>
#include <stan/math/opencl/kernel_generator.hpp>
 
namespace stan {
namespace math {
 
template <typename T, typename M, typename S,
          require_all_kernel_expressions_t<T, M, S>* = nullptr,
          require_any_not_stan_scalar_t<T, M, S>* = nullptr>
inline auto offset_multiplier_constrain(const T& x, const M& mu,
                                        const S& sigma) {
  using std::isfinite;
  const char* function = "offset_multiplier_constrain(OpenCL)";
  check_consistent_sizes(function, "offset", mu, "multiplier", sigma,
                         "parameter", x);
  auto check_mu = check_cl(function, "offset", mu, "finite");
  auto check_sigma = check_cl(function, "multiplier", sigma, "positive finite");
  matrix_cl<double> res;
  results(check_mu, check_sigma, res) = expressions(
      isfinite(mu), isfinite(sigma) && sigma > 0, elt_multiply(x, sigma) + mu);
  return res;
}
 
template <typename T, typename M, typename S,
          require_all_kernel_expressions_t<T, M, S>* = nullptr,
          require_any_not_stan_scalar_t<T, M, S>* = nullptr>
inline auto offset_multiplier_constrain(const T& x, const M& mu, const S& sigma,
                                        double& lp) {
  using std::isfinite;
  const char* function = "offset_multiplier_constrain(OpenCL)";
  check_consistent_sizes(function, "offset", mu, "multiplier", sigma,
                         "parameter", x);
  auto check_mu = check_cl(function, "offset", mu, "finite");
  auto check_sigma = check_cl(function, "multiplier", sigma, "positive finite");
  matrix_cl<double> res;
  matrix_cl<double> lp_inc;
  results(check_mu, check_sigma, res, lp_inc)
      = expressions(isfinite(mu), isfinite(sigma) && sigma > 0,
                    elt_multiply(x, sigma) + mu, sum_2d(log(sigma)));
  lp += sum(from_matrix_cl(lp_inc));
  return res;
}
 
}  // namespace math
}  // namespace stan
#endif
#endif