get.hpp

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#ifndef STAN_MATH_PRIM_FUN_GET_HPP
#define STAN_MATH_PRIM_FUN_GET_HPP
 
#include <stan/math/prim/meta.hpp>
#include <stan/math/prim/fun/Eigen.hpp>
#include <cmath>
#include <cstddef>
#include <cstdlib>
#include <vector>
 
namespace stan {
 
template <typename T, typename = require_stan_scalar_t<T>>
inline T get(const T& x, size_t n) {
  return x;
}
 
template <typename T>
inline T get(const std::vector<T>& x, size_t n) {
  return x[n];
}
 
template <typename T, typename = require_eigen_t<T>>
inline scalar_type_t<T> get(const T& m, size_t n) {
  return m(static_cast<int>(n));
}
 
}  // namespace stan
#endif