linspaced_array.hpp

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#ifndef STAN_MATH_PRIM_FUN_LINSPACED_ARRAY_HPP
#define STAN_MATH_PRIM_FUN_LINSPACED_ARRAY_HPP
 
#include <stan/math/prim/err.hpp>
#include <stan/math/prim/fun/Eigen.hpp>
#include <vector>
 
namespace stan {
namespace math {
 
inline std::vector<double> linspaced_array(int K, double low, double high) {
  static constexpr const char* function = "linspaced_array";
  check_nonnegative(function, "size", K);
  check_finite(function, "low", low);
  check_finite(function, "high", high);
  check_greater_or_equal(function, "high", high, low);
 
  if (K == 0) {
    return {};
  }
 
  Eigen::VectorXd v = Eigen::VectorXd::LinSpaced(K, low, high);
  return {&v[0], &v[0] + K};
}
 
}  // namespace math
}  // namespace stan
 
#endif