unitspaced_array.hpp

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#ifndef STAN_MATH_PRIM_FUN_UNITSPACED_ARRAY_HPP
#define STAN_MATH_PRIM_FUN_UNITSPACED_ARRAY_HPP
 
#include <stan/math/prim/err.hpp>
#include <stan/math/prim/fun/Eigen.hpp>
#include <stan/math/prim/fun/fabs.hpp>
#include <vector>
 
namespace stan {
namespace math {
 
inline std::vector<int> unitspaced_array(int low, int high) {
  static constexpr const char* function = "unitspaced_array";
  check_greater_or_equal(function, "high", high, low);
 
  int K = std::abs(high - low + 1);
  std::vector<int> result(K);
  Eigen::Map<Eigen::VectorXi>(result.data(), K)
      = Eigen::VectorXi::LinSpaced(K, low, high);
  return result;
}
 
}  // namespace math
}  // namespace stan
 
#endif