elt_divide.hpp

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#ifndef STAN_MATH_PRIM_FUN_ELT_DIVIDE_HPP
#define STAN_MATH_PRIM_FUN_ELT_DIVIDE_HPP
 
#include <stan/math/prim/meta.hpp>
#include <stan/math/prim/err.hpp>
#include <stan/math/prim/fun/Eigen.hpp>
#include <stan/math/prim/fun/divide.hpp>
 
namespace stan {
namespace math {
 
template <typename Mat1, typename Mat2,
          require_all_eigen_t<Mat1, Mat2>* = nullptr,
          require_all_not_st_var<Mat1, Mat2>* = nullptr>
auto elt_divide(const Mat1& m1, const Mat2& m2) {
  check_matching_dims("elt_divide", "m1", m1, "m2", m2);
  return (m1.array() / m2.array()).matrix();
}
 
template <typename Mat, typename Scal, require_matrix_t<Mat>* = nullptr,
          require_stan_scalar_t<Scal>* = nullptr>
auto elt_divide(const Mat& m, Scal s) {
  return divide(m, s);
}
 
template <typename Scal, typename Mat, require_stan_scalar_t<Scal>* = nullptr,
          require_eigen_t<Mat>* = nullptr>
auto elt_divide(Scal s, const Mat& m) {
  return (s / m.array()).matrix();
}
 
template <typename Scal1, typename Scal2,
          require_all_stan_scalar_t<Scal1, Scal2>* = nullptr>
auto elt_divide(Scal1 s1, Scal2 s2) {
  return s1 / s2;
}
 
}  // namespace math
}  // namespace stan
 
#endif